1
|
Yue L, Li J, Yao C, Chen J, Yan C, Wang X, Cao J. Nonequilibrium Lattice Dynamics of Individual and Attached PbSe Quantum Dots under Photoexcitation. J Phys Chem Lett 2024:7667-7673. [PMID: 39037601 DOI: 10.1021/acs.jpclett.4c01541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Quantum dot (QD) solids are emerging materials for many optoelectronic applications. To enhance interdot coupling and charge transport, surface ligands can be removed, allowing individual QDs to be attached along specific crystal orientations (termed "oriented attachment"). Optimizing the electronic and optical properties of QD solids demands a comprehensive understanding of the nanoscale energy flow in individual and attached QDs under photoexcitation. In this work, we employed ultrafast electron diffraction to directly measure how oriented attachment along ⟨100⟩ directions affects the nonequilibrium lattice dynamics of lead selenide QDs. The oriented attachment anisotropically alters the ultrafast energy relaxation along specific crystal axes. Along the ⟨100⟩ directions, both the lattice deformation and atomistic random motions are suppressed in comparison with those of individual QDs. Conversely, the effects are enhanced along the unattached ⟨111⟩ directions due to ligand removal. The oriented attachment switches the major lattice thermalization pathways from ⟨100⟩ to ⟨111⟩ directions.
Collapse
Affiliation(s)
- Luye Yue
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jingjun Li
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Changyuan Yao
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jie Chen
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chang Yan
- Center for Ultrafast Science and Technology, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xuan Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Jianming Cao
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- Physics Department and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| |
Collapse
|
2
|
Lengle D, Schwarz M, Patjens S, Stuckelberger ME, Ruhmlieb C, Mews A, Dorn A. Tracking Cation Exchange in Individual Nanowires via Transistor Characterization. ACS NANO 2024; 18:18036-18045. [PMID: 38916252 PMCID: PMC11238621 DOI: 10.1021/acsnano.4c05197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/31/2024] [Accepted: 06/11/2024] [Indexed: 06/26/2024]
Abstract
Cation exchange is a versatile method for modifying the material composition and properties of nanostructures. However, control of the degree of exchange and material properties is difficult at the single-particle level. Successive cation exchange from CdSe to Ag2Se has been utilized here on the same individual nanowires to monitor the change of electronic properties in field-effect transistor devices. The transistors were fabricated by direct synthesis of CdSe nanowires on prepatterned substrates followed by optical lithography. The devices were then subjected to cation exchange by submerging them in an exchange solution containing silver nitrate. By removal of the devices from solution and probing the electrical transport properties at different times, the change in electronic properties of individual nanowires could be monitored throughout the entire exchange reaction from CdSe to Ag2Se. Transistor characterization revealed that the electrical conductivity can be tuned by up to 8 orders of magnitude and the charge-carrier mobility by 7 orders of magnitude. While analysis of the material composition by energy dispersive X-ray spectroscopy confirmed successful cation exchange from CdSe to Ag2Se, X-ray fluorescence spectroscopy proved that cation exchange also took place below the contacts. The method presented here demonstrates an efficient way to tune the material composition and access the resulting properties nondestructively at the single-particle level. This approach can be readily applied to many other material systems and can be used to study the electrical properties of nanostructures as a function of material composition or to optimize nanostructure-based devices after fabrication.
Collapse
Affiliation(s)
- Daniel Lengle
- Institute
of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
- The
Hamburg Center for Ultrafast Imaging, 22761 Hamburg, Germany
| | - Maximilian Schwarz
- Institute
of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | - Svenja Patjens
- Institute
of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
- Centre
for X-ray and Nano Science CXNS, Deutsches
Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Michael E. Stuckelberger
- Centre
for X-ray and Nano Science CXNS, Deutsches
Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Charlotte Ruhmlieb
- Institute
of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | - Alf Mews
- Institute
of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
- The
Hamburg Center for Ultrafast Imaging, 22761 Hamburg, Germany
| | | |
Collapse
|
3
|
Lee Y, Choi YW, Li L, Zhou W, Cohen ML, Kim K, Zettl A. SiX 2 (X = S, Se) Single Chains and (Si-Ge)X 2 Quaternary Alloys. ACS NANO 2024; 18:17882-17889. [PMID: 38920317 PMCID: PMC11238589 DOI: 10.1021/acsnano.4c04184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Layered or chain materials have received significant research attention owing to their interesting physical properties, which can dramatically change when the material is thinned from bulk (three-dimensional) to thin two-dimensional sheet or one-dimensional (1D) chain form. Materials with the stoichiometry AX2 with A = Si or Ge and X = S or Se form an especially intriguing semiconducting class. For example, bulk silicon dichalcogenides (SiX2) consist of 1D chains held together by van der Waals forces. Although this structural configuration has the potential to reveal interesting physical phenomena within the 1D limit, obtaining SiX2 single chains has been challenging. We here examine experimentally and theoretically SiX2 materials in the low chain number limit. Carbon nanotubes serve as growth templates and stabilize and protect the structures, and atomic-resolution scanning transmission electron microscopy directly identifies the atomic structure. Two distinct chain structures are observed for SiX2. SixGe1-xS2(1-y)Se2y quaternary alloy chains are also synthesized and characterized, demonstrating tunable semiconducting properties at the atomic-chain level. Density functional theory calculations reveal that the band gap of these alloy chains can be widely tuned through composition engineering. This work offers the possibilities for synthesizing and controlling semiconductor compositions at the single-chain limit to tailor material properties.
Collapse
Affiliation(s)
- Yangjin Lee
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Physics, Yonsei University, Seoul 03722, Korea
- Center for Nanomedicine, Institute for Basic Science, Seoul 03722, Korea
| | - Young Woo Choi
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Linxuan Li
- School of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wu Zhou
- School of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Marvin L Cohen
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kwanpyo Kim
- Department of Physics, Yonsei University, Seoul 03722, Korea
- Center for Nanomedicine, Institute for Basic Science, Seoul 03722, Korea
| | - Alex Zettl
- Department of Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoSciences Institute at the University of California at Berkeley, Berkeley, California 94720, United States
| |
Collapse
|
4
|
Deng YH, Pang C, Kheradmand E, Leemans J, Bai J, Minjauw M, Liu J, Molkens K, Beeckman J, Detavernier C, Geiregat P, Van Thourhout D, Hens Z. Short-Wave Infrared Colloidal QD Photodetector with Nanosecond Response Times Enabled by Ultrathin Absorber Layers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402002. [PMID: 38657973 DOI: 10.1002/adma.202402002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/09/2024] [Indexed: 04/26/2024]
Abstract
Ultrafast short-wavelength infrared (SWIR) photodetection is of great interest for emerging automated vision and spatial mapping technologies. Colloidal quantum dots (QDs) stand out for SWIR photodetection compared to epitaxial (In,Ga)As or (Hg,Cd)Te semiconductors by their combining a size-tunable bandgap and a suitability for cost-effective, solution-based processing. However, achieving ultrafast, nanosecond-level response time has remained an outstanding challenge for QD-based SWIR photodiodes (QDPDs). Here, record 4 ns response time in PbS-based QDPDs that operate at SWIR wavelengths is reported, a result reaching the requirement of SWIR light detection and ranging based on colloidal QDs. These ultrafast QDPDs combine a thin active layer to reduce the carrier transport time and a small area to inhibit slow capacitive discharging. By implementing a concentration gradient ligand exchange method, high-quality p-n junctions are fabricated in these ultrathin QDPDs. Moreover, these ultrathin QDPDs attain an external quantum efficiency of 42% at 1330 nm, due to a 2.5-fold enhanced light absorption through the formation of a Fabry-Perot cavity within the QDPD and the highly efficient extraction (98%) of photogenerated charge carriers. Based on these results, it is estimated that a further increase of the charge-carrier mobility can lead to PbS QDPDs with sub-nanosecond response time.
Collapse
Affiliation(s)
- Yu-Hao Deng
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| | - Chao Pang
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
- Photonics Research Group, Ghent University, Ghent, 9052, Belgium
| | - Ezat Kheradmand
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| | - Jari Leemans
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| | - Jing Bai
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| | - Matthias Minjauw
- Department of Solid State Sciences, Ghent University, Ghent, 9000, Belgium
| | - Jiayi Liu
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
- Department of Electronics and Information Systems, Ghent University, Ghent, 9052, Belgium
| | - Korneel Molkens
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
- Photonics Research Group, Ghent University, Ghent, 9052, Belgium
| | - Jeroen Beeckman
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
- Department of Electronics and Information Systems, Ghent University, Ghent, 9052, Belgium
| | | | - Pieter Geiregat
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| | - Dries Van Thourhout
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
- Photonics Research Group, Ghent University, Ghent, 9052, Belgium
| | - Zeger Hens
- Physics and Chemistry of Nanostructures Group, Ghent University, Ghent, 9000, Belgium
- Center for Nano and Biophotonics, Ghent University, Ghent, 9052, Belgium
| |
Collapse
|
5
|
Pedrazo-Tardajos A, Claes N, Wang D, Sánchez-Iglesias A, Nandi P, Jenkinson K, De Meyer R, Liz-Marzán LM, Bals S. Direct visualization of ligands on gold nanoparticles in a liquid environment. Nat Chem 2024:10.1038/s41557-024-01574-1. [PMID: 38937593 DOI: 10.1038/s41557-024-01574-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/06/2024] [Indexed: 06/29/2024]
Abstract
The interactions between gold nanoparticles, their surface ligands and the solvent critically influence the properties of these nanoparticles. Although spectroscopic and scattering techniques have been used to investigate their ensemble structure, a comprehensive understanding of these processes at the nanoscale remains challenging. Electron microscopy makes it possible to characterize the local structure and composition but is limited by insufficient contrast, electron beam sensitivity and the requirement for ultrahigh-vacuum conditions, which prevent the investigation of dynamic aspects. Here we show that, by exploiting high-quality graphene liquid cells, we can overcome these limitations and investigate the structure of the ligand shell around gold nanoparticles and at the ligand-gold interface in a liquid environment. Using this graphene liquid cell, we visualize the anisotropy, composition and dynamics of ligand distribution on gold nanorod surfaces. Our results indicate a micellar model for surfactant organization. This work provides a reliable and direct visualization of ligand distribution around colloidal nanoparticles.
Collapse
Affiliation(s)
- Adrián Pedrazo-Tardajos
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Nathalie Claes
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Da Wang
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Ana Sánchez-Iglesias
- CIC biomaGUNE, Donostia-San Sebastián, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Donostia-San Sebastián, Spain
| | - Proloy Nandi
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Kellie Jenkinson
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Robin De Meyer
- EMAT-University of Antwerp, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Donostia-San Sebastián, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
- Cinbio, Universidade de Vigo, Vigo, Spain
| | - Sara Bals
- EMAT-University of Antwerp, Antwerp, Belgium.
- NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium.
| |
Collapse
|
6
|
Moustafa S, Almarashi JQM, Zayed MK, Almokhtar M, Rashad M, Fares H. Plasmon resonances of GZO core-Ag shell nanospheres, nanorods, and nanodisks for biosensing and biomedical applications in near-infrared biological windows I and II. Phys Chem Chem Phys 2024; 26:17817-17829. [PMID: 38884203 DOI: 10.1039/d4cp00817k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
There is currently a great deal of interest in realizing localized surface plasmon resonances (LSPRs) in two distinct windows in the near-infrared (NIR) spectrum for in vivo biosensing and medical applications, the biological window (BW) I and II (BW I, 700-900 nm; BW II, 1000-1700 nm). This study aims to demonstrate that LSPRs of Ga-doped ZnO (GZO) core-silver (Ag) shell structures exhibit promising features for biological applications in the NIR BW I and II. Here, we study three different shapes for nanoshells: the core-shell nanosphere, nanorod, and nanodisk. In the calculation of the optical response of these nanoshells, an effective medium approach is first used to reduce the dielectric function of a nanoshell to that of an equivalent homogenous NP with an effective dielectric function. Then, the LSPR spectra of nanoshells are calculated using the modified long-wavelength approximation (MLWA), which corrects the polarizability of the equivalent NP as obtained by Gans theory. Through numerical investigations, we examine the impacts of the core and shell sizes of the proposed nanoshells as well as the medium refractive index on the position and line width of the plasmon resonance peaks. It is shown that the plasmon resonances of the three proposed nanoshells exhibit astonishing resonance tunability in the NIR region by varying their geometrical parameters. Specifically, the improved spectrum characteristics and tunability of its plasmon resonances make the GZO-Ag nanosphere a more viable platform for NIR applications than the spherical metal colloid. Furthermore, we demonstrate that the sensitivity and figure of merit (FOM) of the plasmon resonances may be significantly increased by using GZO-Ag nanorods and nanodisks in place of GZO-Ag nanospheres. It is found that the optical properties of the transverse plasmon resonance of the GZO-Ag nanodisk are superior to all plasmon resonances produced by the GZO-Ag nanorods and GZO-Ag nanospheres in terms of sensitivity and FOM. The FOM of the transverse plasmon mode of the GZO-Ag nanodisk is almost two orders of magnitude higher than that of the longitudinal and transverse plasmon modes of the GZO-Ag nanorod in BW I and BW II. And it is 1.5 and 2 times higher than the plasmon resonance FOM of GZO-Ag nanospheres in BW I and BW II, respectively.
Collapse
Affiliation(s)
- Samar Moustafa
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Jamal Q M Almarashi
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
| | - Mohamed K Zayed
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 6111, Egypt
| | - Mohamed Almokhtar
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Mohamed Rashad
- Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Hesham Fares
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
| |
Collapse
|
7
|
Yoo D, Choi MJ. Asymmetric Metal-Carboxylate Complexes for Synthesis of InGaP Alloyed Quantum Dots with Blue Emission. ACS NANO 2024; 18:16051-16058. [PMID: 38840340 DOI: 10.1021/acsnano.4c05643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Indium phosphide (InP) quantum dots (QDs) have attracted significant interest as next-generation light-emitting materials. However, the synthesis of blue-emitting InP-based QDs has lagged behind that of established green- and red-emitting InP QDs. Herein, we present a strategy to synthesize blue-emitting QDs by forming an InGaP alloy composition. The introduction of asymmetric In-carboxylate and Ga-carboxylate complexes resulted in a balanced synthetic reactivity between In-P and Ga-P, leading to the formation of InGaP alloyed QDs. The resultant In1-xGaxP alloyed QDs exhibited a broad range of photoluminescence (PL) tunability, spanning from 535 nm (InP) to 465 nm (In0.62Ga0.38P), depending on the In/Ga ratio used in the synthesis. In contrast, synthesis with symmetric In-carboxylate and Ga-carboxylate complexes produced a core/shell structure of InP/GaP QDs, which did not exhibit a blue shift of the PL peak with Ga addition. By employing a core/shell structure of In0.62Ga0.38P/ZnS QDs, we achieved a PL quantum yield of 42% at 475 nm. This work highlights the material-processing strategy essential for forming alloyed structures in III-V ternary systems.
Collapse
Affiliation(s)
- Doheon Yoo
- Department of Chemical and Biochemical Engineering, Dongguk University, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea
| | - Min-Jae Choi
- Department of Chemical and Biochemical Engineering, Dongguk University, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea
| |
Collapse
|
8
|
Bassani CL, van Anders G, Banin U, Baranov D, Chen Q, Dijkstra M, Dimitriyev MS, Efrati E, Faraudo J, Gang O, Gaston N, Golestanian R, Guerrero-Garcia GI, Gruenwald M, Haji-Akbari A, Ibáñez M, Karg M, Kraus T, Lee B, Van Lehn RC, Macfarlane RJ, Mognetti BM, Nikoubashman A, Osat S, Prezhdo OV, Rotskoff GM, Saiz L, Shi AC, Skrabalak S, Smalyukh II, Tagliazucchi M, Talapin DV, Tkachenko AV, Tretiak S, Vaknin D, Widmer-Cooper A, Wong GCL, Ye X, Zhou S, Rabani E, Engel M, Travesset A. Nanocrystal Assemblies: Current Advances and Open Problems. ACS NANO 2024; 18:14791-14840. [PMID: 38814908 DOI: 10.1021/acsnano.3c10201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
We explore the potential of nanocrystals (a term used equivalently to nanoparticles) as building blocks for nanomaterials, and the current advances and open challenges for fundamental science developments and applications. Nanocrystal assemblies are inherently multiscale, and the generation of revolutionary material properties requires a precise understanding of the relationship between structure and function, the former being determined by classical effects and the latter often by quantum effects. With an emphasis on theory and computation, we discuss challenges that hamper current assembly strategies and to what extent nanocrystal assemblies represent thermodynamic equilibrium or kinetically trapped metastable states. We also examine dynamic effects and optimization of assembly protocols. Finally, we discuss promising material functions and examples of their realization with nanocrystal assemblies.
Collapse
Affiliation(s)
- Carlos L Bassani
- Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Greg van Anders
- Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Uri Banin
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Dmitry Baranov
- Division of Chemical Physics, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Qian Chen
- University of Illinois, Urbana, Illinois 61801, USA
| | - Marjolein Dijkstra
- Soft Condensed Matter & Biophysics, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Michael S Dimitriyev
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - Efi Efrati
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel
- James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
| | - Jordi Faraudo
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
| | - Oleg Gang
- Department of Chemical Engineering, Columbia University, New York, New York 10027, USA
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Nicola Gaston
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics, The University of Auckland, Auckland 1142, New Zealand
| | - Ramin Golestanian
- Max Planck Institute for Dynamics and Self-Organization (MPI-DS), 37077 Göttingen, Germany
- Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3PU, UK
| | - G Ivan Guerrero-Garcia
- Facultad de Ciencias de la Universidad Autónoma de San Luis Potosí, 78295 San Luis Potosí, México
| | - Michael Gruenwald
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
| | - Amir Haji-Akbari
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Maria Ibáñez
- Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria
| | - Matthias Karg
- Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Tobias Kraus
- INM - Leibniz-Institute for New Materials, 66123 Saarbrücken, Germany
- Saarland University, Colloid and Interface Chemistry, 66123 Saarbrücken, Germany
| | - Byeongdu Lee
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Reid C Van Lehn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53717, USA
| | - Robert J Macfarlane
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
| | - Bortolo M Mognetti
- Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Arash Nikoubashman
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
- Institut für Theoretische Physik, Technische Universität Dresden, 01069 Dresden, Germany
| | - Saeed Osat
- Max Planck Institute for Dynamics and Self-Organization (MPI-DS), 37077 Göttingen, Germany
| | - Oleg V Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA
| | - Grant M Rotskoff
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Leonor Saiz
- Department of Biomedical Engineering, University of California, Davis, California 95616, USA
| | - An-Chang Shi
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Sara Skrabalak
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
| | - Ivan I Smalyukh
- Department of Physics and Chemical Physics Program, University of Colorado, Boulder, Colorado 80309, USA
- International Institute for Sustainability with Knotted Chiral Meta Matter, Hiroshima University, Higashi-Hiroshima City 739-0046, Japan
| | - Mario Tagliazucchi
- Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Buenos Aires 1428 Argentina
| | - Dmitri V Talapin
- Department of Chemistry, James Franck Institute and Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Alexei V Tkachenko
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Sergei Tretiak
- Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - David Vaknin
- Iowa State University and Ames Lab, Ames, Iowa 50011, USA
| | - Asaph Widmer-Cooper
- ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Sydney, Sydney, New South Wales 2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Gerard C L Wong
- Department of Bioengineering, University of California, Los Angeles, California 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Xingchen Ye
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
| | - Shan Zhou
- Department of Nanoscience and Biomedical Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - Eran Rabani
- Department of Chemistry, University of California and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- The Raymond and Beverly Sackler Center of Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Michael Engel
- Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Alex Travesset
- Iowa State University and Ames Lab, Ames, Iowa 50011, USA
| |
Collapse
|
9
|
Lindgren EB, Avis H, Miller A, Stamm B, Besley E, Stace AJ. The significance of multipole interactions for the stability of regular structures composed from charged particles. J Colloid Interface Sci 2024; 663:458-466. [PMID: 38417297 DOI: 10.1016/j.jcis.2024.02.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/25/2024] [Accepted: 02/19/2024] [Indexed: 03/01/2024]
Abstract
Identifying the forces responsible for stabilising binary particle lattices is key to the controlled fabrication of many new materials. Experiments have shown that the presence of charge can be integral to the formation of ordered arrays; however, a complete analysis of the forces responsible has not included many of the significant lattice types that may form during fabrication. A theory of many-body electrostatic interactions has been applied to six lattice stoichiometries, AB, AB2, AB3, AB4, AB5 and AB6, to show that induced multipole interactions can make a very significant (>80 %) contribution to the total lattice energy of arrays of charged particles. Particle radii ratios which favour global minima in electrostatic energy are found to be the same or a close match to those observed by experiment. Although certain lattice types exhibit local energy minima, the calculations show that many-body rather than two-body interactions are ultimately responsible for the structures observed by experiment. For a lattice isostructural with CFe4, a particle size ratio not previously observed is found to be particularly stable due to many-body effects.
Collapse
Affiliation(s)
- Eric B Lindgren
- Institute of Applied Analysis and Numerical Simulation, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Holly Avis
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Abigail Miller
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Benjamin Stamm
- Institute of Applied Analysis and Numerical Simulation, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Elena Besley
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Anthony J Stace
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.
| |
Collapse
|
10
|
Xu W, Chen Y, Niederberger M, Tervoort E, Mei J, Peng DL. Self-Assembled Preparation of Porous Nickel Phosphide Superparticles with Tunable Phase and Porosity for Efficient Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309435. [PMID: 38229146 DOI: 10.1002/smll.202309435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/19/2023] [Indexed: 01/18/2024]
Abstract
Self-assembly of colloidal nanoparticles enables the easy building of assembly units into higher-order structures and the bottom-up preparation of functional materials. Nickel phosphides represent an important group of catalysts for hydrogen evolution reaction (HER) from water splitting. In this paper, the preparation of porous nickel phosphide superparticles and their HER efficiencies are reported. Ni and Ni2P nanoparticles are self-assembled into binary superparticles via an oil-in-water emulsion method. After annealing and acid etching, the as-prepared Ni-Ni2P binary superparticles change into porous nickel phosphide superparticles. The porosity and crystalline phase of the superparticles can be tuned by adjusting the ratio of Ni and Ni2P nanoparticles. The resulting porous superparticles are effective in driving HER under acidic conditions, and the modulation of porosity and phase further optimize the electrochemical performance. The prepared Ni3P porous superparticles not only possess a significantly enhanced specific surface area compared to solid Ni-Ni2P superparticles but also exhibit an excellent HER efficiency. The calculations based on the density functional theories show that the (110) crystal facet exhibits a relatively lower Gibbs free energy of hydrogen adsorption. This work provides a self-assembly approach for the construction of porous metal phosphide nanomaterials with tunable crystalline phase and porosity.
Collapse
Affiliation(s)
- Wanjie Xu
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Yuanzhi Chen
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Markus Niederberger
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zürich, 8093, Switzerland
| | - Elena Tervoort
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zürich, 8093, Switzerland
| | - Jie Mei
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Dong-Liang Peng
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
| |
Collapse
|
11
|
Chen M, Hao Q. Colloidal Quantum Dots for Nanophotonic Devices. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2471. [PMID: 38893735 PMCID: PMC11172753 DOI: 10.3390/ma17112471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
Colloidal quantum dots (CQDs) have unique advantages in the wide tunability of visible-to-infrared emission wavelength and low-cost solution processibility [...].
Collapse
Affiliation(s)
- Menglu Chen
- School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China;
| | - Qun Hao
- School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China;
- Physics Department, Changchun University of Science and Technology, Changchun 130022, China
| |
Collapse
|
12
|
Guzelturk B, Diroll BT, Cassidy JP, Harankahage D, Hua M, Lin XM, Iyer V, Schaller RD, Lawrie BJ, Zamkov M. Bright and durable scintillation from colloidal quantum shells. Nat Commun 2024; 15:4274. [PMID: 38769114 PMCID: PMC11106345 DOI: 10.1038/s41467-024-48351-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/29/2024] [Indexed: 05/22/2024] Open
Abstract
Efficient, fast, and robust scintillators for ionizing radiation detection are crucial in various fields, including medical diagnostics, defense, and particle physics. However, traditional scintillator technologies face challenges in simultaneously achieving optimal performance and high-speed operation. Herein we introduce colloidal quantum shell heterostructures as X-ray and electron scintillators, combining efficiency, speed, and durability. Quantum shells exhibit light yields up to 70,000 photons MeV-1 at room temperature, enabled by their high multiexciton radiative efficiency thanks to long Auger-Meitner lifetimes (>10 ns). Radioluminescence is fast, with lifetimes of 2.5 ns and sub-100 ps rise times. Additionally, quantum shells do not exhibit afterglow and maintain stable scintillation even under high X-ray doses (>109 Gy). Furthermore, we showcase quantum shells for X-ray imaging achieving a spatial resolution as high as 28 line pairs per millimeter. Overall, efficient, fast, and durable scintillation make quantum shells appealing in applications ranging from ultrafast radiation detection to high-resolution imaging.
Collapse
Affiliation(s)
- Burak Guzelturk
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA.
| | - Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA.
| | - James P Cassidy
- Department of Physics, Bowling Green State University, Bowling Green, OH, USA
| | | | - Muchuan Hua
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Xiao-Min Lin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Vasudevan Iyer
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Richard D Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Benjamin J Lawrie
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Mikhail Zamkov
- Department of Physics, Bowling Green State University, Bowling Green, OH, USA.
| |
Collapse
|
13
|
Popelář T, Matějka F, Kopenec J, Morselli G, Ceroni P, Kůsová K. Why do Si quantum dots with stronger fast emission have lower external photoluminescence quantum yield? NANOSCALE ADVANCES 2024; 6:2644-2655. [PMID: 38752139 PMCID: PMC11093259 DOI: 10.1039/d3na01031g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/08/2024] [Indexed: 05/18/2024]
Abstract
Silicon quantum dots (QDs) are a promising non-toxic alternative to the already well-developed platform of light-emitting semiconductor QDs based on III-V and II-VI materials. Oxidized SiQDs or those surface-terminated with long alkyl chains typically feature long-lived orange-red photoluminescence originating in quantum-confined core states. However, sometimes an additional short-lived PL band, whose mechanism is still highly debated, is reported. Here, we perform a detailed study of the room-temperature PL of SiQDs using samples covering three main fabrication techniques. We find evidence for the presence of only one set of radiative processes in addition to the typical long-lived PL. Moreover, we experimentally determine the ratio between the short- and long-lived PL component, obtaining a wide range of values (0.003 - 0.1) depending on the type of sample. In accordance with an already published report, we observe a tendency of SiQDs with stronger short-lived PL to have lower external quantum yield. We explain this trend using a model of the optical performance of an ensemble of QDs with widely varying optical characteristics through a mechanism we call selective lifetime-based quenching.
Collapse
Affiliation(s)
- Tomáš Popelář
- Institute of Physics of the CAS v.v.i., Cukrovarnická 10 162 00 Prague 6 Czechia
| | - Filip Matějka
- Institute of Physics of the CAS v.v.i., Cukrovarnická 10 162 00 Prague 6 Czechia
- University of Chemistry and Technology Technická 5 166 28 Praha 6 Czechia
| | - Jakub Kopenec
- Institute of Physics of the CAS v.v.i., Cukrovarnická 10 162 00 Prague 6 Czechia
| | - Giacomo Morselli
- Chemistry Department "Giacomo Ciamician", University of Bologna Via F. Selmi 2 40126 Bologna Italy
| | - Paola Ceroni
- Chemistry Department "Giacomo Ciamician", University of Bologna Via F. Selmi 2 40126 Bologna Italy
| | - Kateřina Kůsová
- Institute of Physics of the CAS v.v.i., Cukrovarnická 10 162 00 Prague 6 Czechia
| |
Collapse
|
14
|
Liu Y, Sun G, Ma P, Song D. Combining fluorescent quantum dots with transition metal oxide shell as core-shell nanocomposite for turn-on sensing of ascorbic acid. Talanta 2024; 271:125687. [PMID: 38271843 DOI: 10.1016/j.talanta.2024.125687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/08/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
Ascorbic acid (AA) is an essential vitamin in humans, and numerous AA detection studies have been conducted. Most quantum dots (QDs)-based approaches depend on redox reactions involving AA, and they require the introduction of an intermediate (e.g., metal ions, OPD, TMB) or the assembly of fluorescent substances with nanosheets (such as MnO2) that can be degraded by AA. These methods are complex, unstable, and are susceptible to interferences. To address these problems, a core-shell fluorescence probe was developed for turn-on sensing of AA. The transition metal oxide shell FeOOH was generated around the surface of CuInZnS QDs to quench the fluorescence. In the presence of AA, the FeOOH shell was decomposed into Fe2+ and the fluorescence of QDs was recovered. Using a physical shell, the obtained nanocomposite realized direct AA detection, avoiding the effects of interfering substances caused by QDs exposure. Moreover, our probe showed great potential in point-of-care tests and was readily adapted for use as a smartphone-assisted paper sensor.
Collapse
Affiliation(s)
- Yibing Liu
- School of Chemistry and Life Science, Changchun University of Technology, Yanan Street 2055, Changchun, 130012, China
| | - Guoying Sun
- School of Chemistry and Life Science, Changchun University of Technology, Yanan Street 2055, Changchun, 130012, China; Advanced Institute of Materials Science, Changchun University of Technology, Yanan Street 2055, Changchun, 130012, China
| | - Pinyi Ma
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
| | - Daqian Song
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
| |
Collapse
|
15
|
Liu Y, Zhang X, Yang Z, Chen K, Chen W. Passivation of 2D Cs 2PbI 2Cl 2 Nanosheets for Efficient and Stable CsPbI 3 Quantum Dot Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:22197-22206. [PMID: 38632668 DOI: 10.1021/acsami.4c02917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Inorganic CsPbI3 perovskite quantum dots (PQDs) possess remarkable optical properties, making them highly promising for photovoltaic applications. However, the inadequate stability resulting from internal structural instability and the complex external surface chemical environment of CsPbI3 PQDs has hindered the development of CsPbI3 PQD solar cells (PQDSCs). In this work, the capping layer composed of inorganic two-dimensional (2D) Ruddlesden-Popper (RP) phase Cs2PbI2Cl2 nanosheets (NSs) is introduced, which may be effectively treated to improve the surface properties of the CsPbI3 PQD film. This modification serves to passivate defects by filling cesium and iodine vacancies while optimizing the energy band arrangement and preventing humidity intrusion, leading to the meliorative stability and photovoltaic performance. The optimized CsPbI3 PQDSCs achieve an enhanced power conversion efficiency (PCE) of 14.73%, with the superb stability of only a 16% efficiency loss after being exposed to ambient conditions (30 ± 5% RH) for 432 h.
Collapse
Affiliation(s)
- Yueli Liu
- State Key Laboratory of Silicate Materials for Architectures, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
- Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, P. R. China
| | - Xiaolei Zhang
- State Key Laboratory of Silicate Materials for Architectures, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zifan Yang
- State Key Laboratory of Silicate Materials for Architectures, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Keqiang Chen
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Wen Chen
- Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, P. R. China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| |
Collapse
|
16
|
Moes J, Vliem JF, de Melo PMMC, Wigmans TC, Botello-Méndez AR, Mendes RG, van Brenk EF, Swart I, Maisel Licerán L, Stoof HTC, Delerue C, Zanolli Z, Vanmaekelbergh D. Characterization of the Edge States in Colloidal Bi 2Se 3 Platelets. NANO LETTERS 2024; 24:5110-5116. [PMID: 38624179 PMCID: PMC11066965 DOI: 10.1021/acs.nanolett.3c04460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/17/2024]
Abstract
The remarkable development of colloidal nanocrystals with controlled dimensions and surface chemistry has resulted in vast optoelectronic applications. But can they also form a platform for quantum materials, in which electronic coherence is key? Here, we use colloidal, two-dimensional Bi2Se3 crystals, with precise and uniform thickness and finite lateral dimensions in the 100 nm range, to study the evolution of a topological insulator from three to two dimensions. For a thickness of 4-6 quintuple layers, scanning tunneling spectroscopy shows an 8 nm wide, nonscattering state encircling the platelet. We discuss the nature of this edge state with a low-energy continuum model and ab initio GW-Tight Binding theory. Our results also provide an indication of the maximum density of such states on a device.
Collapse
Affiliation(s)
- Jesper
R. Moes
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Jara F. Vliem
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Pedro M. M. C. de Melo
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Thomas C. Wigmans
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Andrés R. Botello-Méndez
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Rafael G. Mendes
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Ella F. van Brenk
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Ingmar Swart
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Lucas Maisel Licerán
- Institute
for Theoretical Physics and Center for Extreme Matter and Emergent
Phenomena, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Henk T. C. Stoof
- Institute
for Theoretical Physics and Center for Extreme Matter and Emergent
Phenomena, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Christophe Delerue
- Université
de Lille, CNRS, Université Polytechnique Hauts-de-France, Junia,
UMR 8520-IEMN, F-59000 Lille, France
| | - Zeila Zanolli
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Daniel Vanmaekelbergh
- Debye Institute
for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| |
Collapse
|
17
|
Kim S, Lee K, Gwak N, Shin S, Seo J, Noh SH, Kim D, Lee Y, Kong H, Yeo D, Kim TA, Lee SY, Jang J, Oh N. Colloidal Synthesis of P-Type Zn 3As 2 Nanocrystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310671. [PMID: 38279779 DOI: 10.1002/adma.202310671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Zinc pnictides, particularly Zn3As2, hold significant promise for optoelectronic applications owing to their intrinsic p-type behavior and appropriate bandgaps. However, despite the outstanding properties of colloidal Zn3As2 nanocrystals, research in this area is lacking because of the absence of suitable precursors, occurrence of surface oxidation, and intricacy of the crystal structures. In this study, a novel and facile solution-based synthetic approach is presented for obtaining highly crystalline p-type Zn3As2 nanocrystals with accurate stoichiometry. By carefully controlling the feed ratio and reaction temperature, colloidal Zn3As2 nanocrystals are successfully obtained. Moreover, the mechanism underlying the conversion of As precursors in the initial phases of Zn3As2 synthesis is elucidated. Furthermore, these nanocrystals are employed as active layers in field-effect transistors that exhibit inherent p-type characteristics with native surface ligands. To enhance the charge transport properties, a dual passivation strategy is introduced via phase-transfer ligand exchange, leading to enhanced hole mobilities as high as 0.089 cm2 V-1 s-1. This study not only contributes to the advancement of nanocrystal synthesis, but also opens up new possibilities for previously underexplored p-type nanocrystal research.
Collapse
Affiliation(s)
- Seongchan Kim
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Kyumin Lee
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Namyoung Gwak
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Seungki Shin
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jaeyoung Seo
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Sung Hoon Noh
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Doyeon Kim
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Yunseo Lee
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Hyein Kong
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Dongjoon Yeo
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Tae Ann Kim
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-Mobility, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Seung-Yong Lee
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Nuri Oh
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| |
Collapse
|
18
|
Fiedler S, Frenzel F, Würth C, Tavernaro I, Grüne M, Schweizer S, Engel A, Resch-Genger U. Interlaboratory Comparison on Absolute Photoluminescence Quantum Yield Measurements of Solid Light Converting Phosphors with Three Commercial Integrating Sphere Setups. Anal Chem 2024; 96:6730-6737. [PMID: 38629445 PMCID: PMC11063975 DOI: 10.1021/acs.analchem.4c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/04/2024] [Accepted: 04/07/2024] [Indexed: 05/01/2024]
Abstract
Scattering luminescent materials dispersed in liquid and solid matrices and luminescent powders are increasingly relevant for fundamental research and industry. Examples are luminescent nano- and microparticles and phosphors of different compositions in various matrices or incorporated into ceramics with applications in energy conversion, solid-state lighting, medical diagnostics, and security barcoding. The key parameter to characterize the performance of these materials is the photoluminescence/fluorescence quantum yield (Φf), i.e., the number of emitted photons per number of absorbed photons. To identify and quantify the sources of uncertainty of absolute measurements of Φf of scattering samples, the first interlaboratory comparison (ILC) of three laboratories from academia and industry was performed by following identical measurement protocols. Thereby, two types of commercial stand-alone integrating sphere setups with different illumination and detection geometries were utilized for measuring the Φf of transparent and scattering dye solutions and solid phosphors, namely, YAG:Ce optoceramics of varying surface roughness, used as converter materials for blue light emitting diodes. Special emphasis was dedicated to the influence of the measurement geometry, the optical properties of the blank utilized to determine the number of photons of the incident excitation light absorbed by the sample, and the sample-specific surface roughness. While the Φf values of the liquid samples matched between instruments, Φf measurements of the optoceramics with different blanks revealed substantial differences. The ILC results underline the importance of the measurement geometry, sample position, and blank for reliable Φf data of scattering the YAG:Ce optoceramics, with the blank's optical properties accounting for uncertainties exceeding 20%.
Collapse
Affiliation(s)
- Saskia Fiedler
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Florian Frenzel
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Christian Würth
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Isabella Tavernaro
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Michelle Grüne
- Faculty
of Electrical Engineering, South Westphalia
University of Applied Sciences, Lübecker Ring 2, 59494 Soest, Germany
| | - Stefan Schweizer
- Faculty
of Electrical Engineering, South Westphalia
University of Applied Sciences, Lübecker Ring 2, 59494 Soest, Germany
- Fraunhofer
Application Center for Inorganic Phosphors, Branch Lab of Fraunhofer Institute for Microstructure of Materials
and Systems IMWS, Lübecker
Ring 2, 59494 Soest, Germany
| | - Axel Engel
- Schott
AG Technical Services, Hattenbergstrasse 10, D-55122 Mainz, Germany
| | - Ute Resch-Genger
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| |
Collapse
|
19
|
Wang S, Sun Z, Zhao X, Li K, Wang Y, Zhang X. N-C QDs coated with a molecularly imprinted polymer as a fluorescent probe for detection of penicillin. Dalton Trans 2024; 53:6965-6973. [PMID: 38546786 DOI: 10.1039/d3dt04297a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2024]
Abstract
Many diseases are due to bacterial infections, which are treated by penicillin. Existing methods for penicillin detection have relatively high requirements for sample storage and processing, personnel professionalism, and instruments. Herein, water-soluble N-C quantum dots (QDs) from wheat straw were synthesized in a green way by using an efficient and simple method. The N-C QDs were modified with an imprinted layer by a gel-sol method. Penicillin selectively quenched the fluorescence emission of N-C QDs@MIP, and a linear relationship was obtained in the concentration range of 1.0 × 10-6-15.2 × 10-6 mol L-1. The reliability of the sensor in real sample analysis was satisfactory with results in the range of 93.6%-100%, and the sensor showed good reproducibility and long-term stability. The study provides a simple strategy to fabricate N-C QDs@MIP with a highly selective recognition ability and opens an avenue to develop highly efficient sensing probes for the detection of antibiotics in biological applications.
Collapse
Affiliation(s)
- Shan Wang
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, 712000, China.
| | - Zhihui Sun
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, 712000, China.
| | - Xuyang Zhao
- Xianyang Institute of Cultural Relics and Archaeology, Xianyang, 712000, China
| | - Kunhua Li
- Xianyang Institute of Cultural Relics and Archaeology, Xianyang, 712000, China
| | - Yafei Wang
- Xianyang Institute of Cultural Relics and Archaeology, Xianyang, 712000, China
| | - Xijing Zhang
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, 712000, China.
| |
Collapse
|
20
|
Chaâbani W, Lyu J, Marcone J, Goldmann C, Ten Veen EJM, Dumesnil C, Bizien T, Smallenburg F, Impéror-Clerc M, Constantin D, Hamon C. Prismatic Confinement Induces Tunable Orientation in Plasmonic Supercrystals. ACS NANO 2024; 18:9566-9575. [PMID: 38507585 DOI: 10.1021/acsnano.3c12799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Throughout history scientists have looked to Nature for inspiration and attempted to replicate intricate complex structures formed by self-assembly. In the context of synthetic supercrystals, achieving such complexity remains a challenge due to the highly symmetric nature of most nanoparticles (NPs). Previous works have shown intricate coupling between the self-assembly of NPs and confinement in templates, such as emulsion droplets (spherical confinement) or tubes (cylindrical confinement). This study focuses on the interplay between anisotropic NP shape and tunable "prismatic confinement" leading to the self-assembly of supercrystals in cavities featuring polygonal cross sections. A multiscale characterization strategy is employed to investigate the orientation and structure of the supercrystals locally and at the ensemble level. Our findings highlight the role of the mold interface in guiding the growth of distinct crystal domains: each side of the mold directs the formation of a monodomain that extends until it encounters another, leading to the creation of grain boundaries. Computer simulations in smaller prismatic cavities were conducted to predict the effect of an increased confinement. Comparison between prismatic and cylindrical confinements shows that flat interfaces are key to orienting the growth of supercrystals. This work shows a method of inducing orientation in plasmonic supercrystals and controlling their textural defects, thus offering insight into the design of functional metasurfaces and hierarchically structured devices.
Collapse
Affiliation(s)
- Wajdi Chaâbani
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Jieli Lyu
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Jules Marcone
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Claire Goldmann
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Eleonora J M Ten Veen
- Soft Condensed Matter, Debye Institute of Nanomaterials Science, Utrecht University, 3584 CC Utrecht, Netherlands
| | - Clément Dumesnil
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Thomas Bizien
- SWING Beamline, SOLEIL Synchrotron, 91190 Gif-sur-Yvette, France
| | - Frank Smallenburg
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | | | - Doru Constantin
- Institut Charles Sadron, CNRS and Université de Strasbourg, 67034 Strasbourg, France
| | - Cyrille Hamon
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| |
Collapse
|
21
|
Hens Z, Delerue CD. A tight-binding model for illustrating exciton confinement in semiconductor nanocrystals. J Chem Phys 2024; 160:114106. [PMID: 38506285 DOI: 10.1063/5.0192031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Abstract
The Brus equation describes the relation between the lowest energy of an electron-hole pair and the size of a semiconductor crystallite. However, taking the strong confinement regime as a starting point, the equation does not cover the transition from weak to strong confinement, the accompanying phenomenon of charge-carrier delocalization, or the change in the transition dipole moment of the electron-hole pair state. Here, we use a one-dimensional, two-particle Hubbard model for interacting electron-hole pairs that extends the well-known tight-binding approach through a point-like electron-hole interaction. On infinite chains, the resulting exciton states exhibit the known relation between the Bohr radius, the exciton binding energy, and the effective mass of the charge carriers. Moreover, by introducing infinite-well boundary conditions, the model enables the transition of the exciton states from weak to strong confinement to be tracked, while straightforward adaptations provide insights into the relation between defects, exciton localization, and confinement. In addition, by introducing the dipole operator, the variation of the transition dipole moment can be mapped when shifting from electron-hole pairs in strong confinement to delocalized and localized excitons in weak confinement. The proposed model system can be readily implemented and extended to different multi-carrier states, thus providing researchers a tool for exploring, understanding, and teaching confinement effects in semiconductor nanocrystals under different conditions.
Collapse
Affiliation(s)
- Z Hens
- Physics and Chemistry of Nanostructures, Ghent University, 9000 Gent, Belgium
| | - C D Delerue
- Université de Lille, CNRS, Université Polytechnique Hauts-de-France, Junia, UMR 8520 - IEMN, F-59000 Lille, France
| |
Collapse
|
22
|
Derelli D, Frank K, Grote L, Mancini F, Dippel AC, Gutowski O, Nickel B, Koziej D. Direct Synthesis of CuPd Icosahedra Supercrystals Studied by In Situ X-Ray Scattering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311714. [PMID: 38501853 DOI: 10.1002/smll.202311714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/20/2024] [Indexed: 03/20/2024]
Abstract
Nanocrystal self-assembly into supercrystals provides a versatile platform for creating novel materials and devices with tailored properties. While common self-assembly strategies imply the use of purified nanoparticles after synthesis, conversion of chemical precursors directly into nanocrystals and then supercrystals in simple procedures has been rarely reported. Here, the nucleation and growth of CuPd icosahedra and their consecutive assembly into large closed-packed face-centered cubic (fcc) supercrystals are studied. To this end, the study simultaneously and in situ measures X-ray total scattering with pair distribution function analysis (TS-PDF) and small-angle X-ray scattering (SAXS). It is found that the supercrystals' formation is preceded by an intermediate dense phase of nanocrystals displaying short-range order (SRO). It is further shown that the organization of oleic acid/oleylamine surfactants into lamellar structures likely drives the emergence of the SRO phase and later of the supercrystals by reducing the volume accessible to particle diffusion. The supercrystals' formation as well as their disassembly are triggered by temperature. The study demonstrates that ordering of solvent molecules can be crucial in the direct synthesis of supercrystals. The study also provides a general approach to investigate novel preparation routes of supercrystals in situ and across several length scales via X-ray scattering.
Collapse
Affiliation(s)
- Davide Derelli
- Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, University of Hamburg, 22761, Hamburg, Germany
| | - Kilian Frank
- Faculty of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, 80539, Munich, Germany
| | - Lukas Grote
- Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, University of Hamburg, 22761, Hamburg, Germany
| | - Federica Mancini
- Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, University of Hamburg, 22761, Hamburg, Germany
- Current affiliation: National Research Council of Italy, Institute of Science, Technology and Sustainability for Ceramics, CNR - ISSMC (former ISTEC), 64 I-48018, Via Granarolo, FAENZA (RA), Italy
| | | | - Olof Gutowski
- Deutsches Elektronen-Synchrotron DESY, 22607, Hamburg, Germany
| | - Bert Nickel
- Faculty of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, 80539, Munich, Germany
| | - Dorota Koziej
- Institute for Nanostructure and Solid-State Physics, Center for Hybrid Nanostructures, University of Hamburg, 22761, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, 22761, Hamburg, Germany
| |
Collapse
|
23
|
Gomes Souza F, Bhansali S, Pal K, Silveira Maranhão FD, Santos Oliveira M, Valladão VS, Brandão E Silva DS, Silva GB. A 30-Year Review on Nanocomposites: Comprehensive Bibliometric Insights into Microstructural, Electrical, and Mechanical Properties Assisted by Artificial Intelligence. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1088. [PMID: 38473560 DOI: 10.3390/ma17051088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/18/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024]
Abstract
From 1990 to 2024, this study presents a groundbreaking bibliometric and sentiment analysis of nanocomposite literature, distinguishing itself from existing reviews through its unique computational methodology. Developed by our research group, this novel approach systematically investigates the evolution of nanocomposites, focusing on microstructural characterization, electrical properties, and mechanical behaviors. By deploying advanced Boolean search strategies within the Scopus database, we achieve a meticulous extraction and in-depth exploration of thematic content, a methodological advancement in the field. Our analysis uniquely identifies critical trends and insights concerning nanocomposite microstructure, electrical attributes, and mechanical performance. The paper goes beyond traditional textual analytics and bibliometric evaluation, offering new interpretations of data and highlighting significant collaborative efforts and influential studies within the nanocomposite domain. Our findings uncover the evolution of research language, thematic shifts, and global contributions, providing a distinct and comprehensive view of the dynamic evolution of nanocomposite research. A critical component of this study is the "State-of-the-Art and Gaps Extracted from Results and Discussions" section, which delves into the latest advancements in nanocomposite research. This section details various nanocomposite types and their properties and introduces novel interpretations of their applications, especially in nanocomposite films. By tracing historical progress and identifying emerging trends, this analysis emphasizes the significance of collaboration and influential studies in molding the field. Moreover, the "Literature Review Guided by Artificial Intelligence" section showcases an innovative AI-guided approach to nanocomposite research, a first in this domain. Focusing on articles from 2023, selected based on citation frequency, this method offers a new perspective on the interplay between nanocomposites and their electrical properties. It highlights the composition, structure, and functionality of various systems, integrating recent findings for a comprehensive overview of current knowledge. The sentiment analysis, with an average score of 0.638771, reflects a positive trend in academic discourse and an increasing recognition of the potential of nanocomposites. Our bibliometric analysis, another methodological novelty, maps the intellectual domain, emphasizing pivotal research themes and the influence of crosslinking time on nanocomposite attributes. While acknowledging its limitations, this study exemplifies the indispensable role of our innovative computational tools in synthesizing and understanding the extensive body of nanocomposite literature. This work not only elucidates prevailing trends but also contributes a unique perspective and novel insights, enhancing our understanding of the nanocomposite research field.
Collapse
Affiliation(s)
- Fernando Gomes Souza
- Biopolymers & Sensors Lab., Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-853, Brazil
- Programa de Engenharia da Nanotecnologia, Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE), Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-914, Brazil
| | - Shekhar Bhansali
- Biomolecular Sciences Institute, College of Engineering & Computing, Center for Aquatic Chemistry and Environment, Florida International University, 10555 West Flagler St EC3900, Miami, FL 33174, USA
| | - Kaushik Pal
- Department of Physics, University Center for Research and Development (UCRD), Chandigarh University, Mohali 140413, Punjab, India
| | - Fabíola da Silveira Maranhão
- Biopolymers & Sensors Lab., Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-853, Brazil
| | - Marcella Santos Oliveira
- Biopolymers & Sensors Lab., Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-853, Brazil
| | - Viviane Silva Valladão
- Biopolymers & Sensors Lab., Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-853, Brazil
| | - Daniele Silvéria Brandão E Silva
- Programa de Engenharia da Nanotecnologia, Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE), Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-914, Brazil
| | - Gabriel Bezerra Silva
- Biopolymers & Sensors Lab., Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Tecnologia-Cidade Universitária, Rio de Janeiro 21941-853, Brazil
| |
Collapse
|
24
|
Fiorito S, Silvestri M, Cirignano M, Marini A, Di Stasio F. Controlled Growth of Large SiO 2 Shells onto Semiconductor Colloidal Nanocrystals: A Pathway Toward Photonic Integration. ACS APPLIED NANO MATERIALS 2024; 7:3724-3733. [PMID: 38420183 PMCID: PMC10897880 DOI: 10.1021/acsanm.3c05223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/02/2024] [Accepted: 01/02/2024] [Indexed: 03/02/2024]
Abstract
The growth of SiO2 shells on semiconductor nanocrystals is an established procedure and it is widely employed to provide dispersibility in polar solvents, and increased stability or biocompatibility. However, to exploit this shell to integrate photonic components on semiconductor nanocrystals, the growth procedure must be finely tunable and able to reach large particle sizes (around 100 nm or above). Here, we demonstrate that these goals are achievable through a design of experiment approach. Indeed, the use of a sequential full-factorial design allows us to carefully tune the growth of SiO2 shells to large values while maintaining a reduced size dispersion. Moreover, we show that the growth of a dielectric shell alone can be beneficial in terms of emission efficiency for the nanocrystal. We also demonstrate that, according to our modeling, the subsequent growth of two shells with increasing refractive index leads to an improved emission efficiency already at a reduced SiO2 sphere radius.
Collapse
Affiliation(s)
- Sergio Fiorito
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
| | - Matteo Silvestri
- Dipartimento
di Scienze Fisiche e Chimiche, Università
degli studi dell’Aquila, 67100 L’Aquila, Italy
| | - Matilde Cirignano
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, 16146 Genoa, Italy
| | - Andrea Marini
- Dipartimento
di Scienze Fisiche e Chimiche, Università
degli studi dell’Aquila, 67100 L’Aquila, Italy
| | | |
Collapse
|
25
|
Cowie B, Mears KL, S’ari M, Lee JK, Briceno de Gutierrez M, Kalha C, Regoutz A, Shaffer MSP, Williams CK. Exploiting Organometallic Chemistry to Functionalize Small Cuprous Oxide Colloidal Nanocrystals. J Am Chem Soc 2024; 146:3816-3824. [PMID: 38301241 PMCID: PMC10870705 DOI: 10.1021/jacs.3c10892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/03/2024]
Abstract
The ligand chemistry of colloidal semiconductor nanocrystals mediates their solubility, band gap, and surface facets. Here, selective organometallic chemistry is used to prepare small, colloidal cuprous oxide nanocrystals and to control their surface chemistry by decorating them with metal complexes. The strategy is demonstrated using small (3-6 nm) cuprous oxide (Cu2O) colloidal nanocrystals (NC), soluble in organic solvents. Organometallic complexes are coordinated by reacting the surface Cu-OH bonds with organometallic reagents, M(C6F5)2, M = Zn(II) and Co(II), at room temperature. These reactions do not disrupt the Cu2O crystallinity or nanoparticle size; rather, they allow for the selective coordination of a specific metal complex at the surface. Subsequently, the surface-coordinated organometallic complex is reacted with three different carboxylic acids to deliver Cu-O-Zn(O2CR') complexes. Selective nanocrystal surface functionalization is established using spectroscopy (IR, 19F NMR), thermal gravimetric analyses (TGA), transmission electron microscopy (TEM, EELS), and X-ray photoelectron spectroscopy (XPS). Photoluminescence efficiency increases dramatically upon organometallic surface functionalization relative to that of the parent Cu2O NC, with the effect being most pronounced for Zn(II) decoration. The nanocrystal surfaces are selectively functionalized by both organic ligands and well-defined organometallic complexes; this synthetic strategy may be applicable to many other metal oxides, hydroxides, and semiconductors. In the future, it should allow NC properties to be designed for applications including catalysis, sensing, electronics, and quantum technologies.
Collapse
Affiliation(s)
- Bradley
E. Cowie
- Department
of Chemistry, University of Oxford, Chemistry
Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Kristian L. Mears
- Department
of Chemistry, University of Oxford, Chemistry
Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Mark S’ari
- Johnson
Matthey, Johnson Matthey, Blounts Court, Sonning Common, Reading RG4 9NH, U.K.
| | - Ja Kyung Lee
- Johnson
Matthey, Johnson Matthey, Blounts Court, Sonning Common, Reading RG4 9NH, U.K.
| | | | - Curran Kalha
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Anna Regoutz
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Milo S. P. Shaffer
- Department
of Materials, Imperial College London, London SW7 2AZ, U.K.
- Department
of Chemistry, Imperial College London, 82 Wood Lane, London W12 0BZ, U.K.
| | - Charlotte K. Williams
- Department
of Chemistry, University of Oxford, Chemistry
Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| |
Collapse
|
26
|
Toyota Y, Sagawa M, Yamashita S, Okayasu Y, Nagai Y, Okada Y, Kobayashi Y. Effect of the bulkiness of alkyl ligands on the excited-state dynamics of ZnO nanocrystals. RSC Adv 2024; 14:2796-2803. [PMID: 38234874 PMCID: PMC10792356 DOI: 10.1039/d3ra05166h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024] Open
Abstract
Organic ligands on the surface of nanocrystals (NCs) are extremely important in influencing various physical properties, such as dispersibility, electrical properties, and optical properties. Recent studies have revealed that a slight difference in the molecular structure of aliphatic organic ligands significantly affects the dispersibility of the NCs. On the other hand, the effects of the difference in the molecular structure of ligands on the excited-state dynamics of NCs remain elusive. In this study, we synthesized a series of colloidal ZnO NCs capped with different alkyl phosphonic acids and investigated their photophysical properties using emission decay measurements and transient absorption spectroscopy. The spectral shape and lifetime of the emission originating from the surface oxygen defects of ZnO NCs are almost the same irrespective of the alkyl phosphonic ligands used, indicating that the electronic states of the surface oxygen defects are not affected by the bulkiness of the ligand. On the other hand, the emission quantum yield correlates with the rate of carrier trapping by oxygen defects, suggesting that the rate of carrier trapping reflects the number of oxygen defects. Revealing the detailed relationship between molecular structures of organic ligands and the optical properties of NCs is important for advanced photofunctional superstructures using semiconductor NCs.
Collapse
Affiliation(s)
- Yuto Toyota
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Masahiko Sagawa
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Shohei Yamashita
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Yoshinori Okayasu
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Yuki Nagai
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Yohei Okada
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Yoichi Kobayashi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
- Precursory Research for Embryonic Science and Technology (PRESTO), Science and Technology Agency (JST) 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
27
|
Ondry JC, Gupta A, Zhou Z, Chang JH, Talapin DV. Synthesis of Ternary and Quaternary Group III-Arsenide Colloidal Quantum Dots via High-Temperature Cation Exchange in Molten Salts: The Importance of Molten Salt Speciation. ACS NANO 2024; 18:858-873. [PMID: 38108289 DOI: 10.1021/acsnano.3c09490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Colloidal semiconductor nanocrystals are an important class of materials which have many desirable optoelectronic properties. In their bulk phases, gallium- and aluminum-containing III-V materials such as GaAs, GaP, and Al1-xGaxAs represent some of the most technologically important semiconductors. However, their colloidal synthesis by traditional methods is difficult due to the high temperatures needed to crystallize these highly covalent materials and the extreme reactivity of Ga- and Al- precursors toward organic solvents at such high temperatures. A recently developed paradigm shift in the synthesis of these materials is to use molten inorganic salts as solvents to prepare Ga- containing III-V colloidal nanocrystals by cation exchange of the corresponding indium pnictide (InPn) colloidal nanocrystals. There have been several successful applications of molten salt solvents to prepare III-phosphide colloidal nanocrystals. However, little is known about the nature of these reaction environments at the relevant reaction conditions and synthesis of III-arsenide colloidal nanocrystals remains challenging. Herein we report a detailed study on cation exchange of InPn nanocrystals using nominally Lewis basic molten salt solvents with added gallium halides. Surprisingly, these salt systems phase separate into two immiscible phases, and the nanocrystals preferentially segregate to one of the phases. Using a suite of in situ spectroscopy tools, we identify the phase the nanocrystals segregate to as Lewis neutral alkali tetrahalogallate molten salts. We apply in situ high-temperature Raman spectroscopy to identify the chemical species present in several molten salt compositions at experimentally relevant reaction conditions to elucidate a molecular basis for the reactivity observed. We then employ Lewis neutral KGaI4 molten salts to prepare high-quality In1-xGaxAs and In1-xGaxP nanocrystals and demonstrate that deviation from Lewis neutral conditions accelerate nanocrystal decomposition in the case of III-arsenide materials. Further, we expand to KAlI4-based molten salts to prepare In1-x-yGaxAlyAs nanocrystals which represent an example of solution-synthesized quaternary III-V nanocrystals. These insights provide a molecular basis for the rational development of molten salt solvents, thus allowing the preparation of a diverse array of multicomponent III-V colloidal nanocrystals.
Collapse
Affiliation(s)
- Justin C Ondry
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Aritrajit Gupta
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Zirui Zhou
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Jun Hyuk Chang
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Dmitri V Talapin
- Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
| |
Collapse
|
28
|
Kumar P, Parashar M, Chauhan K, Chakraborty N, Sarkar S, Chandra A, Das NS, Chattopadhyay KK, Ghoari A, Adalder A, Ghorai UK, Saini S, Agarwal D, Ghosh S, Srivastava P, Banerjee D. Significant enhancement in the cold emission characteristics of chemically synthesized super-hydrophobic zinc oxide rods by nickel doping. NANOSCALE ADVANCES 2023; 5:6944-6957. [PMID: 38059027 PMCID: PMC10696928 DOI: 10.1039/d3na00776f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/28/2023] [Indexed: 12/08/2023]
Abstract
The current article presents a huge enhancement in the field emission characteristics of zinc oxide (ZnO) micro/nanorods by nickel doping. The synthesis of pure and nickel-doped zinc oxide (ZnO) micro/nanorods was done by a simple low-temperature chemical method. Both the as-prepared pure and doped samples were analyzed by X-ray diffraction and electron microscopy to confirm the proper phase formation and the developed microstructure. UV-vis transmittance spectra helped in determining the band gap of the samples. Fourier-Transform Infrared Spectroscopy (FTIR) spectra showed the different bonds present in the sample, whereas X-ray Photoelectron Spectroscopy (XPS) confirmed the presence of nickel in the doped sample. Photoluminescence (PL) spectra showed that after doping, the band-to-band transition was affected, whereas defect-induced transition had increased significantly. After the nickel doping, contact angle measurement revealed a significant decrease in the sample's surface energy, leading to a remarkably high water contact angle (within the superhydrophobic region). Simulation through ANSYS suggested that the doped sample has the potential to function as an efficient cold emitter, which was also verified experimentally. The cold emission characteristics of the doped sample showed a significant improvement, with the turn-on field (corresponding to J = 1 μA cm-2) reduced from 5.34 to 2.84 V μm-1. The enhancement factor for the doped sample reached 3426, approximately 1.5 times higher compared to pure ZnO. Efforts have been made to explain the results, given the favorable band bending as well as the increased number of effective emission sites.
Collapse
Affiliation(s)
- P Kumar
- Thin Film and Nanotechnology Laboratory, Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University Moradabad UP 244001 India
| | - M Parashar
- Thin Film and Nanotechnology Laboratory, Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University Moradabad UP 244001 India
| | - K Chauhan
- Thin Film and Nanotechnology Laboratory, Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University Moradabad UP 244001 India
| | - N Chakraborty
- Thin Film and Nanoscience Laboratory, Department of Physics, Jadavpur University Kolkata West Bengal 700032 India
| | - S Sarkar
- Thin Film and Nanoscience Laboratory, Department of Physics, Jadavpur University Kolkata West Bengal 700032 India
| | - A Chandra
- Thin Film and Nanoscience Laboratory, Department of Physics, Jadavpur University Kolkata West Bengal 700032 India
| | - N S Das
- Department of Basic Science and Humanities, Techno International Batanagar Maheshtala Kolkata 700141 India
| | - K K Chattopadhyay
- Thin Film and Nanoscience Laboratory, Department of Physics, Jadavpur University Kolkata West Bengal 700032 India
| | - A Ghoari
- Department of Industrial Chemistry, Ramakrishna Mission Vidyamandira Belur Math Howrah-711202 India
| | - A Adalder
- Department of Industrial Chemistry, Ramakrishna Mission Vidyamandira Belur Math Howrah-711202 India
| | - U K Ghorai
- Department of Industrial Chemistry, Ramakrishna Mission Vidyamandira Belur Math Howrah-711202 India
| | - S Saini
- Department of Physics, Indian Institute of Technology Hauz Khas South West Delhi 110016 India
| | - D Agarwal
- Department of Physics, Indian Institute of Technology Hauz Khas South West Delhi 110016 India
| | - S Ghosh
- Department of Physics, Indian Institute of Technology Hauz Khas South West Delhi 110016 India
| | - P Srivastava
- Department of Physics, Indian Institute of Technology Hauz Khas South West Delhi 110016 India
| | - D Banerjee
- Thin Film and Nanotechnology Laboratory, Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University Moradabad UP 244001 India
| |
Collapse
|
29
|
Sheikh T, Mir WJ, Nematulloev S, Maity P, Yorov KE, Hedhili MN, Emwas AH, Khan MS, Abulikemu M, Mohammed OF, Bakr OM. InAs Nanorod Colloidal Quantum Dots with Tunable Bandgaps Deep into the Short-Wave Infrared. ACS NANO 2023; 17:23094-23102. [PMID: 37955579 DOI: 10.1021/acsnano.3c08796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
InAs colloidal quantum dots (CQDs) have emerged as candidate lead- and mercury-free solution-processed semiconductors for infrared technology due to their appropriate bulk bandgap, which can be tuned by quantum confinement, and promising charge-carrier transport properties. However, the lack of suitable arsenic precursors and readily accessible synthesis conditions have limited InAs CQDs to smaller sizes (<7 nm), with bandgaps largely restricted to <1400 nm in the near-infrared spectral window. Conventional InAs CQD synthesis requires highly reactive, hazardous arsenic precursors, which are commercially scarce, making the synthesis hard to control and study. Here, we present a controlled synthesis strategy (using only readily available and less reactive precursors) to overcome the practical wavelength limitation of InAs CQDs, achieving monodisperse InAs nanorod CQDs with bandgaps tunable from ∼1200 to ∼1800 nm, thus crossing deep into the short-wave infrared (SWIR) region. By controlling the reactivity through in situ precursor complexation, we isolate the reaction mechanism, producing InAs nanorod CQDs that display narrow excitonic features and efficient carrier multiplication. Our work enables InAs CQDs for a wider range of SWIR applications.
Collapse
Affiliation(s)
- Tariq Sheikh
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Wasim J Mir
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Saidkhodzha Nematulloev
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Partha Maity
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
- Advanced Membranes and Porous Materials Center, Division of Physical Science and Engineering, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Khursand E Yorov
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mohamed Nejib Hedhili
- KAUST Core Laboratories, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Abdul-Hamid Emwas
- KAUST Core Laboratories, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mudeha Shafat Khan
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mutalifu Abulikemu
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
- Advanced Membranes and Porous Materials Center, Division of Physical Science and Engineering, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| |
Collapse
|
30
|
Segura Lecina O, Newton MA, Green PB, Albertini PP, Leemans J, Marshall KP, Stoian D, Loiudice A, Buonsanti R. Surface Chemistry Dictates the Enhancement of Luminescence and Stability of InP QDs upon c-ALD ZnO Hybrid Shell Growth. JACS AU 2023; 3:3066-3075. [PMID: 38034959 PMCID: PMC10685429 DOI: 10.1021/jacsau.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Indium phosphide quantum dots (InP QDs) are a promising example of Restriction of Hazardous Substances directive (RoHS)-compliant light-emitting materials. However, they suffer from low quantum yield and instability upon processing under ambient conditions. Colloidal atomic layer deposition (c-ALD) has been recently proposed as a methodology to grow hybrid materials including QDs and organic/inorganic oxide shells, which possess new functions compared to those of the as-synthesized QDs. Here, we demonstrate that ZnO shells can be grown on InP QDs obtained via two synthetic routes, which are the classical sylilphosphine-based route and the more recently developed aminophosphine-based one. We find that the ZnO shell increases the photoluminescence emission only in the case of aminophosphine-based InP QDs. We rationalize this result with the different chemistry involved in the nucleation step of the shell and the resulting surface defect passivation. Furthermore, we demonstrate that the ZnO shell prevents degradation of the InP QD suspension under ambient conditions by avoiding moisture-induced displacement of the ligands from their surface. Overall, this study proposes c-ALD as a methodology for the synthesis of alternative InP-based core@shell QDs and provides insight into the surface chemistry that results in both enhanced photoluminescence and stability required for application in optoelectronic devices and bioimaging.
Collapse
Affiliation(s)
- Ona Segura Lecina
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Mark A. Newton
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Philippe B. Green
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Petru P. Albertini
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Jari Leemans
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Kenneth P. Marshall
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Dragos Stoian
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Anna Loiudice
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Raffaella Buonsanti
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| |
Collapse
|
31
|
Dutta R, Bala A, Sen A, Spinazze MR, Park H, Choi W, Yoon Y, Kim S. Optical Enhancement of Indirect Bandgap 2D Transition Metal Dichalcogenides for Multi-Functional Optoelectronic Sensors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303272. [PMID: 37453927 DOI: 10.1002/adma.202303272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/21/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
The unique electrical and optical properties of transition metal dichalcogenides (TMDs) make them attractive nanomaterials for optoelectronic applications, especially optical sensors. However, the optical characteristics of these materials are dependent on the number of layers. Monolayer TMDs have a direct bandgap that provides higher photoresponsivity compared to multilayer TMDs with an indirect bandgap. Nevertheless, multilayer TMDs are more appropriate for various photodetection applications due to their high carrier density, broad spectral response from UV to near-infrared, and ease of large-scale synthesis. Therefore, this review focuses on the modification of the optical properties of devices based on indirect bandgap TMDs and their emerging applications. Several successful developments in optical devices are examined, including band structure engineering, device structure optimization, and heterostructures. Furthermore, it introduces cutting-edge techniques and future directions for optoelectronic devices based on multilayer TMDs.
Collapse
Affiliation(s)
- Riya Dutta
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Arindam Bala
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Anamika Sen
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Michael Ross Spinazze
- Waterloo Institute for Nanotechnology and the Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Heekyeong Park
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Woong Choi
- School of Materials Science & Engineering, Kookmin University, Seoul, 02707, Republic of Korea
| | - Youngki Yoon
- Waterloo Institute for Nanotechnology and the Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Sunkook Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| |
Collapse
|
32
|
Leemans J, Respekta D, Bai J, Braeuer S, Vanhaecke F, Hens Z. Formation of Colloidal In(As,P) Quantum Dots Active in the Short-Wave Infrared, Promoting Growth through Temperature Ramps. ACS NANO 2023; 17:20002-20012. [PMID: 37787479 DOI: 10.1021/acsnano.3c05138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Colloidal InAs quantum dots (QDs) are widely studied as a printable optoelectronic material for short-wave infrared (SWIR) that is not restricted by regulations on hazardous substances. Such applications, however, require synthetic procedures that yield QDs with adjustable sizes at the end of the reaction. Here, we show that such one-size-one-batch protocols can be realized through temperature profiles that involve a rapid transition from a lower injection temperature to a higher reaction temperature. By expediting the transition to the reaction temperature and reducing the overall synthesis concentration, we can tune QD sizes from 4.5 to 10 nm, the latter corresponding to a band gap transition at 1600 nm. We argue that the temperature ramps provide a more distinct separation between nucleation at low temperature and growth at high temperature such that larger QDs are obtained by minimizing the nucleation time. The synthetic procedures introduced here will strongly promote the development of a SWIR optoelectronic technology based on InAs QDs, while the use of temperature profiles to steer a colloidal synthesis can find applications well beyond the specific case of InAs QDs.
Collapse
Affiliation(s)
- Jari Leemans
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| | - Dobromił Respekta
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| | - Jing Bai
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| | - Simone Braeuer
- A&MS Research Group, Department of Chemistry, Ghent University, 9000 Gent, Belgium
| | - Frank Vanhaecke
- A&MS Research Group, Department of Chemistry, Ghent University, 9000 Gent, Belgium
| | - Zeger Hens
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| |
Collapse
|
33
|
Zeng F, Fan Z, Li S, Li L, Sun T, Qiu Y, Nie L, Huang G. Tumor Microenvironment Activated Photoacoustic-Fluorescence Bimodal Nanoprobe for Precise Chemo-immunotherapy and Immune Response Tracing of Glioblastoma. ACS NANO 2023; 17:19753-19766. [PMID: 37812513 DOI: 10.1021/acsnano.3c03378] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Synergistic therapy strategy and prognostic monitoring of glioblastoma's immune response to treatment are crucial to optimize patient care and advance clinical outcomes. However, current systemic temozolomide (TMZ) chemotherapy and imaging methods for in vivo tracing of immune responses are inadequate. Herein, we report an all-in-one theranostic nanoprobe (PEG/αCD25-Cy7/TMZ) for precise chemotherapy and real-time immune response tracing of glioblastoma by photoacoustic-fluorescence imaging. The nanoprobe was loaded with TMZ and targeted regulatory T lymphocyte optical dye αCD25-Cy7 encapsulated by glutathione-responsive DSPE-SS-PEG2000. The results showed that the targeted efficiency of the nanoprobe to regulatory T lymphocytes is up to 92.3%. The activation of PEG/αCD25-Cy7/TMZ by glutathione enhanced the precise delivery of TMZ to the tumor microenvironment for local chemotherapy and monitored glioblastoma's boundary by photoacoustic-fluorescence imaging. Immunotherapy with indoleamine 2,3-dioxygenase inhibitors after chemotherapy could promote immunological responses and reduce regulatory T lymphocyte infiltration, which could improve the survival rate. Photoacoustic imaging has in real-time and noninvasively depicted the dynamic process of immune response on a micrometer scale, showing that the infiltration of regulatory T lymphocytes after chemotherapy was up-regulated and would down-regulate after IDO inhibitor treatment. This all-in-one theranostic strategy is a promising method for precisely delivering TMZ and long-term dynamically tracing regulatory T lymphocytes to evaluate the immune response in situ for accurate tumor chemo-immunotherapy.
Collapse
Affiliation(s)
- Fanchu Zeng
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Zhijin Fan
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
- School of Medicine, South China University of Technology, Guangzhou 510000, China
| | - Shiying Li
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
- Guangdong Cardiovsacular Institute, Guangzhou 510000, China
| | - Lanqing Li
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Tong Sun
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Yang Qiu
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Liming Nie
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Guojia Huang
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| |
Collapse
|
34
|
Barba M, Cola A, De Vicari D, Costa C, Castelli AP, Volontè S, Fruscio R, Frigerio M. Efficacy of a Diode Vaginal Laser in the Treatment of the Genitourinary Syndrome of Menopause. Bioengineering (Basel) 2023; 10:1158. [PMID: 37892888 PMCID: PMC10603982 DOI: 10.3390/bioengineering10101158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/16/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
INTRODUCTION Genitourinary syndrome of menopause (GSM) and vulvovaginal atrophy (VVA) are the most frequent menopause-related clinical entities and are consistently included in the definition of pelvic floor disorders (PFDs). Nonhormonal therapies, such as lubricants and moisturizers, are indicated as first-line treatments, while the "gold standard'' is represented by topical estrogen products; however, in cancer survivors hormonal treatment is not indicated. For this reason, energy-based therapeutic approaches-for instance, through laser technologies-may be employed as alternative options in this kind of patient; however, there are no studies evaluating the efficacy of a pure diode vaginal laser in the treatment of GSM. As a consequence, with our study, we aimed to evaluate outpatient nonablative diode laser treatment in sexually active women, with contraindications, no response, or refusal of local estrogenic therapy. METHODS This prospective study included patients with GSM, aged ≥ 18 years old, with contraindications, or refusal of local estrogen therapies. Women were evaluated via the use of their Vaginal Health Index (VHI) scores, which consists of five measures: elasticity, fluid volume, pH, epithelial integrity, and moisture. Moreover, the intensity of VVA symptoms (vaginal burning, vaginal itching, vaginal dryness, dyspareunia, and dysuria) was measured using a 10 cm visual analog scale (VAS), where the left extreme of the scale (score = 0) indicated "absence of symptom" and the right indicated "symptom as bad as it could be" (score = 100). Sexual function was evaluated with the Female Sexual Function Index (FSFI-19) questionnaire. The treatment was performed using a Leonardo Dual diode laser (Biolitec Italia Srl, Milano, Italy). The laser treatment consisted of three sessions, one per month. One month after the third session, the VHI, symptom VAS, and FSFI-19 were re-evaluated. In addition, the Patient Global Impression of Improvement (PGI-I) questionnaire was collected. RESULTS Our study enrolled a total of 26 consecutive patients. All patients were either in menopause or under treatment with gonadotropin-releasing hormone (GnRH). None of the patients reported adverse effects after laser treatment. In total, 19 (73.1%) patients referred improvements of their symptoms according to PGI-I scores. All domains of the FSFI-19 questionnaire, significantly improved after the diode laser treatment. The mean VHI score increased by 3.2 points, from 12.2 to 15.4 (p < 0.001). Additionally, we documented a significant improvement in symptoms affecting the VAS score, from 69.2 to 43.5 points (p < 0.001). CONCLUSION A diode vaginal laser is an effective and easily tolerated ambulatory procedure for vaginal functional restoration in the treatment of GSM and VVA.
Collapse
Affiliation(s)
- Marta Barba
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | - Alice Cola
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | - Desirèe De Vicari
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | - Clarissa Costa
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | | | - Silvia Volontè
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | - Robert Fruscio
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| | - Matteo Frigerio
- Department of Gynecology, IRCC San Gerardo dei Tintori, University of Milano-Bicocca, 20900 Monza, Italy; (M.B.); (A.C.); (D.D.V.); (C.C.); (S.V.); (R.F.)
| |
Collapse
|
35
|
Balazs DM, Ibáñez M. Widening the use of 3D printing. Science 2023; 381:1413-1414. [PMID: 37769110 DOI: 10.1126/science.adk3070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
A light-triggered fabrication method extends the functionality of printable nanomaterials.
Collapse
Affiliation(s)
- Daniel M Balazs
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - Maria Ibáñez
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| |
Collapse
|
36
|
Trotsiuk L, Muravitskaya A, Movsesyan A, Ramanenka A, Prudnikau A, Antanovich A, Lesnyak V, Gaponenko SV, Govorov AO. Nonclassical Mechanism of Metal-Enhanced Photoluminescence of Quantum Dots. NANO LETTERS 2023; 23:8524-8531. [PMID: 37704574 DOI: 10.1021/acs.nanolett.3c02250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Metal-enhanced photoluminescence is able to provide a robust signal even from a single emitter and is promising in applications in biosensors and optoelectronic devices. However, its realization with semiconductor nanocrystals (e.g., quantum dots, QDs) is not always straightforward due to the hidden and not fully described interactions between plasmonic nanoparticles and an emitter. Here, we demonstrate nonclassical enhancement (i.e., not a conventional electromagnetic mechanism) of the QD photoluminescence at nonplasmonic conditions and correlate it with the charge exchange processes in the system, particularly with high efficiency of the hot-hole generation in gold nanoparticles and the possibility of their transfer to QDs. The hole injection returns a QD from a charged nonemitting state caused by hole trapping by surface and/or interfacial traps into an uncharged emitting state, which leads to an increased photoluminescence intensity. These results open new insights into metal-enhanced photoluminescence, showing the importance of the QD surface states in this process.
Collapse
Affiliation(s)
- Liudmila Trotsiuk
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Alina Muravitskaya
- Department of Physics and Mathematics, University of Hull, Cotthingham Road, HU6 7RX Hull, U.K
| | - Artur Movsesyan
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China, Chengdu 610054, China
- Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, United States
| | - Andrei Ramanenka
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | | | | | | | - Sergey V Gaponenko
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Alexander O Govorov
- Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, United States
| |
Collapse
|
37
|
Beavon J, Huang J, Harankahage D, Montemurri M, Cassidy J, Zamkov M. Quantum shells versus quantum dots: suppressing Auger recombination in colloidal semiconductors. Chem Commun (Camb) 2023; 59:11337-11348. [PMID: 37676487 DOI: 10.1039/d3cc02091f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Colloidal semiconductor nanocrystals (NCs) have attracted a great deal of attention in recent decades. The quantum efficiency of many optoelectronic processes based on these nanomaterials, however, declines with increasing optical or electrical excitation intensity. This issue is caused by Auger recombination of multiple excitons, which converts the NC energy into excess heat, whereby reducing the efficiency and lifespan of NC-based devices, including lasers, photodetectors, X-ray scintillators, and high-brightness LEDs. Recently, semiconductor quantum shells (QSs) have emerged as a viable nanoscale architecture for the suppression of Auger decay. The spherical-shell geometry of these nanostructures leads to a significant reduction of Auger decay rates, while exhibiting a near unity photoluminescence quantum yield. Here, we compare the optoelectronic properties of quantum shells against other low-dimensional semiconductors and discuss their emerging opportunities in solid-state lighting and energy-harvesting applications.
Collapse
Affiliation(s)
- Jacob Beavon
- Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Jiamin Huang
- The Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
- Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Dulanjan Harankahage
- The Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Michael Montemurri
- Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - James Cassidy
- The Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, USA
| | - Mikhail Zamkov
- The Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
- Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA
| |
Collapse
|
38
|
Pathak SS, Kedarnath G, Panchakarla LS. Mechanistic Study of Amphiphilic-Assisted Self-Assembled Cadmium Sulfide Quantum Dots into 3D Superstructures. J Phys Chem Lett 2023; 14:8114-8120. [PMID: 37668342 DOI: 10.1021/acs.jpclett.3c02180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Self-assembling of nanoparticles into complex superstructures is very challenging, which usually depends on postorganizing techniques or pre-existing templates such as polypeptide chains or DNA or external stimulus. Such self-assembled processes typically lead to close-packed structures. Here, it has been demonstrated that under carefully template-free reaction conditions CdS quantum dots (QDs) could be synthesized and simultaneously self-assembled into complex superstructures without compromising individual QD properties. The superstructures of CdS QDs attained by the chemical-based method demonstrate Stokes-shifted photoluminescence (PL) from trap states. Remarkably, the PL decay of superstructures exhibits a single-exponential feature. This behavior is unusual for the synthesized superstructures, indicating that the trap states are restricted to a narrow range. The growth mechanism of these superstructures is explained through the formation of liquid crystal phases (LCPs) with the help of a small-angle X-ray scattering (SAXS) analysis.
Collapse
Affiliation(s)
- Sushil Swaroop Pathak
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gotluru Kedarnath
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Leela S Panchakarla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
39
|
Dalui A, Ariga K, Acharya S. Colloidal semiconductor nanocrystals: from bottom-up nanoarchitectonics to energy harvesting applications. Chem Commun (Camb) 2023; 59:10835-10865. [PMID: 37608724 DOI: 10.1039/d3cc02605a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Colloidal semiconductor nanocrystals (NCs) have been extensively investigated owing to their unique properties induced by the quantum confinement effect. The advent of colloidal synthesis routes led to the design of stable colloidal NCs with uniform size, shape, and composition. Metal oxides, phosphides, and chalcogenides (ZnE, CdE, PbE, where E = S, Se, or Te) are few of the most important monocomponent semiconductor NCs, which show excellent optoelectronic properties. The ability to build quantum confined heterostructures comprising two or more semiconductor NCs offer greater customization and tunability of properties compared to their monocomponent counterparts. More recently, the halide perovskite NCs showed exceptional optoelectronic properties for energy generation and harvesting applications. Numerous applications including photovoltaic, photodetectors, light emitting devices, catalysis, photochemical devices, and solar driven fuel cells have demonstrated using these NCs in the recent past. Overall, semiconductor NCs prepared via the colloidal synthesis route offer immense potential to become an alternative to the presently available device applications. This feature article will explore the progress of NCs syntheses with outstanding potential to control the shape and spatial dimensionality required for photovoltaic, light emitting diode, and photocatalytic applications. We also attempt to address the challenges associated with achieving high efficiency devices with the NCs and possible solutions including interface engineering, packing control, encapsulation chemistry, and device architecture engineering.
Collapse
Affiliation(s)
- Amit Dalui
- Department of Chemistry, Jogamaya Devi College, Kolkata-700026, India
| | - Katsuhiko Ariga
- Graduate School of Frontier Sciences, The University of Tokyo Kashiwa, Chiba 277-8561, Japan
- International Research Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Somobrata Acharya
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata-700032, India.
| |
Collapse
|
40
|
Smirnova OO, Kalitukha IV, Rodina AV, Dimitriev GS, Sapega VF, Ken OS, Korenev VL, Kozyrev NV, Nekrasov SV, Kusrayev YG, Yakovlev DR, Dubertret B, Bayer M. Optical Alignment and Optical Orientation of Excitons in CdSe/CdS Colloidal Nanoplatelets. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2402. [PMID: 37686910 PMCID: PMC10489814 DOI: 10.3390/nano13172402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
Optical alignment and optical orientation of excitons are studied experimentally on an ensemble of core/shell CdSe/CdS colloidal nanoplatelets. Linear and circular polarization of photoluminescence during resonant excitation of excitons is measured at cryogenic temperatures and with magnetic fields applied in the Faraday geometry. The developed theory addresses the optical alignment and optical orientation of excitons in colloidal nanocrystals, taking into account both bright and dark exciton states in the presence of strong electron-hole exchange interaction and the random in-plane orientation of nanoplatelets within the ensemble. Our theoretical analysis of the obtained experimental data allows us to evaluate the exciton fine structure parameters, the g-factors, and the spin lifetimes of the bright and dark excitons. The optical alignment effect enables the identification of the exciton and trion contributions to the emission spectrum, even in the absence of their clear separation in the spectra.
Collapse
Affiliation(s)
- Olga O. Smirnova
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Ina V. Kalitukha
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
- Experimentelle Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - Anna V. Rodina
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | | | - Victor F. Sapega
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Olga S. Ken
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | | | - Nikolai V. Kozyrev
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Sergey V. Nekrasov
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Yuri G. Kusrayev
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Dmitri R. Yakovlev
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
- Experimentelle Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - Benoit Dubertret
- Laboratoire de Physique et d’Étude des Matériaux, ESPCI, CNRS, 75231 Paris, France
| | - Manfred Bayer
- Experimentelle Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| |
Collapse
|
41
|
Borsley S, Edwards W, Mati IK, Poss G, Diez-Castellnou M, Marro N, Kay ER. A General One-Step Synthesis of Alkanethiyl-Stabilized Gold Nanoparticles with Control over Core Size and Monolayer Functionality. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:6168-6177. [PMID: 37576587 PMCID: PMC10413864 DOI: 10.1021/acs.chemmater.3c01506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Indexed: 08/15/2023]
Abstract
In spite of widespread interest in the unique size-dependent properties and consequent applications of gold nanoparticles (AuNPs), synthetic protocols that reliably allow for independent tuning of surface chemistry and core size, the two critical determinants of AuNP properties, remain limited. Often, core size is inherently affected by the ligand structure in an unpredictable fashion. Functionalized ligands are commonly introduced using postsynthesis exchange procedures, which can be inefficient and operationally delicate. Here, we report a one-step protocol for preparing monolayer-stabilized AuNPs that is compatible with a wide range of ligand functional groups and also allows for the systematic control of core size. In a single-phase reaction using the mild reducing agent tert-butylamine borane, AuNPs that are compatible with solvents spanning a wide range of polarities from toluene to water can be produced without damaging reactive chemical functionalities within the small-molecule surface-stabilizing ligands. We demonstrate that the rate of reduction, which is easily controlled by adjusting the period over which the reducing agent is added, is a simple parameter that can be used irrespective of the ligand structure to adjust the core size of AuNPs without broadening the size distribution. Core sizes in the range of 2-10 nm can thus be generated. The upper size limit appears to be determined by the nature of each specific ligand/solvent pairing. This protocol produces high quality, functionally sophisticated nanoparticles in a single step. By combining the ability to vary size-related nanoparticle properties with the option to incorporate reactive functional groups at the nanoparticle-solvent interface, it is possible to generate chemically reactive colloidal building blocks from which more complex nanoparticle-based devices and materials may subsequently be constructed.
Collapse
Affiliation(s)
- Stefan Borsley
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - William Edwards
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Ioulia K. Mati
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Guillaume Poss
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Marta Diez-Castellnou
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Nicolas Marro
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Euan R. Kay
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| |
Collapse
|
42
|
Tanjil MRE, Gupta T, Gole MT, Suero KP, Yin Z, McCleeary DJ, Douglas ORT, Kincanon MM, Rudawski NG, Anderson AB, Murphy CJ, Zhao H, Wang MC. Nanoscale goldbeating: Solid-state transformation of 0D and 1D gold nanoparticles to anisotropic 2D morphologies. PNAS NEXUS 2023; 2:pgad267. [PMID: 37621403 PMCID: PMC10446819 DOI: 10.1093/pnasnexus/pgad267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/24/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Goldbeating is the ancient craft of thinning bulk gold (Au) into gossamer leaves. Pioneered by ancient Egyptian craftsmen, modern mechanized iterations of this technique can fabricate sheets as thin as ∼100 nm. We take inspiration from this millennia-old craft and adapt it to the nanoscale regime, using colloidally synthesized 0D/1D Au nanoparticles (AuNPs) as highly ductile and malleable nanoscopic Au ingots and subjecting them to solid-state, uniaxial compression. The applied stress induces anisotropic morphological transformation of AuNPs into 2D leaf form and elucidates insights into metal nanocrystal deformation at the extreme length scales. The induced 2D morphology is found to be dependent on the precursor 0D/1D NP morphology, size (0D nanosphere diameter and 1D nanorod diameter and length), and their on-substrate arrangement (e.g., interparticle separation and packing order) prior to compression. Overall, this versatile and generalizable solid-state compression technique enables new pathways to synthesize and investigate the anisotropic morphological transformation of arbitrary NPs and their resultant emergent phenomena.
Collapse
Affiliation(s)
- Md Rubayat-E Tanjil
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Tanuj Gupta
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA
| | - Matthew T Gole
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Keegan P Suero
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Zhewen Yin
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Donald J McCleeary
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Ossie R T Douglas
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Maegen M Kincanon
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Nicholas G Rudawski
- Herbert Wertheim College of Engineering Research Service Centers, University of Florida, Gainesville, FL 32611, USA
| | - Alissa B Anderson
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Huijuan Zhao
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA
| | - Michael Cai Wang
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
- Department of Medical Engineering, University of South Florida, Tampa, FL 33620, USA
- Department of Chemical, Biological, and Materials Engineering, University of South Florida, Tampa, FL 33620, USA
| |
Collapse
|
43
|
Ma H, Kang S, Lee S, Park G, Bae Y, Park G, Kim J, Li S, Baek H, Kim H, Yu JS, Lee H, Park J, Yang J. Moisture-Induced Degradation of Quantum-Sized Semiconductor Nanocrystals through Amorphous Intermediates. ACS NANO 2023. [PMID: 37399231 DOI: 10.1021/acsnano.3c03103] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Elucidating the water-induced degradation mechanism of quantum-sized semiconductor nanocrystals is an important prerequisite for their practical application because they are vulnerable to moisture compared to their bulk counterparts. In-situ liquid-phase transmission electron microscopy is a desired method for studying nanocrystal degradation, and it has recently gained technical advancement. Herein, the moisture-induced degradation of semiconductor nanocrystals is investigated using graphene double-liquid-layer cells that can control the initiation of reactions. Crystalline and noncrystalline domains of quantum-sized CdS nanorods are clearly distinguished during their decomposition with atomic-scale imaging capability of the developed liquid cells. The results reveal that the decomposition process is mediated by the involvement of the amorphous-phase formation, which is different from conventional nanocrystal etching. The reaction can proceed without the electron beam, suggesting that the amorphous-phase-mediated decomposition is induced by water. Our study discloses unexplored aspects of moisture-induced deformation pathways of semiconductor nanocrystals, involving amorphous intermediates.
Collapse
Affiliation(s)
- Hyeonjong Ma
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Sungsu Kang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Seunghan Lee
- Department of Physics, Konkuk University, Seoul 05029, Korea
| | - Gisang Park
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Yuna Bae
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Gyuri Park
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Jihoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Shi Li
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Hayeon Baek
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyeongseung Kim
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Jong-Sung Yu
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
- Energy Science and Engineering Research Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Hoonkyung Lee
- Department of Physics, Konkuk University, Seoul 05029, Korea
| | - Jungwon Park
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Engineering Research, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon-si, Gyeonggi-do 16229, Republic of Korea
| | - Jiwoong Yang
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
- Energy Science and Engineering Research Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| |
Collapse
|
44
|
Chandrasekaran V, Scarpelli L, Masia F, Borri P, Langbein W, Hens Z. Exciton Dephasing by Phonon-Induced Scattering between Bright Exciton States in InP/ZnSe Colloidal Quantum Dots. ACS NANO 2023. [PMID: 37326256 DOI: 10.1021/acsnano.2c12182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Decoherence or dephasing of the exciton is a central characteristic of a quantum dot (QD) that determines the minimum width of the exciton emission line and the purity of indistinguishable photon emission during exciton recombination. Here, we analyze exciton dephasing in colloidal InP/ZnSe QDs using transient four-wave mixing spectroscopy. We obtain a dephasing time of 23 ps at a temperature of 5 K, which agrees with the smallest line width of 50 μeV we measure for the exciton emission of single InP/ZnSe QDs at 5 K. By determining the dephasing time as a function of temperature, we find that exciton decoherence can be described as a phonon-induced, thermally activated process. The deduced activation energy of 0.32 meV corresponds to the small splitting within the nearly isotropic bright exciton triplet of InP/ZnSe QDs, suggesting that the dephasing is dominated by phonon-induced scattering within the bright exciton triplet.
Collapse
Affiliation(s)
- Vigneshwaran Chandrasekaran
- Physics and Chemistry of Nanostructures, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| | - Lorenzo Scarpelli
- Cardiff University School of Physics and Astronomy, The Parade, Cardiff CF24 3AA, United Kingdom
| | - Francesco Masia
- Cardiff University School of Physics and Astronomy, The Parade, Cardiff CF24 3AA, United Kingdom
- School of Biosciences, Cardiff University, Museum Avenue, Cardiff CF10 3AX, United Kingdom
| | - Paola Borri
- School of Biosciences, Cardiff University, Museum Avenue, Cardiff CF10 3AX, United Kingdom
| | - Wolfgang Langbein
- Cardiff University School of Physics and Astronomy, The Parade, Cardiff CF24 3AA, United Kingdom
| | - Zeger Hens
- Physics and Chemistry of Nanostructures, Ghent University, 9000 Gent, Belgium
- Center for Nano and Biophotonics, Ghent University, 9000 Gent, Belgium
| |
Collapse
|
45
|
Lou Y, Li X, Shi Z, Zhou H, Feng T, Xu B. General Syntheses of High-Performance Thermoelectric Nanostructured Solids without Post-Synthetic Ligand Stripping. NANO LETTERS 2023; 23:5317-5325. [PMID: 37212245 DOI: 10.1021/acs.nanolett.3c01438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Ligand-assisted wet chemical synthesis is a versatile methodology to produce controllable nanocrystals (NCs). The post-treatment of ligands is significant for the performance of functional devices. Herein, a method that retains ligands of colloidal-synthesized nanomaterials to produce thermoelectric nanomaterials is proposed, which differs from the conventional methods that strip ligands using multistep cumbersome processes. The ligand-retention method can control the size and dispersity of nanocrystals during the consolidation of the NCs into dense pellets, in which retained ligands are transformed into organic carbon within the inorganic matrices, establishing clear organic-inorganic interfaces. Characterizations of the nonstripped and stripped samples confirm that this strategy can affect electric transport slightly but reduce the thermal conductivity largely. As a result, the materials (e.g., SnSe, Cu2-xS, AgBiSe2, and Cu2ZnSnSe4) with ligands retained achieve higher peak zT and better mechanical properties. This method can be applied to other colloidal thermoelectric NCs and functional materials.
Collapse
Affiliation(s)
- Yue Lou
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaokun Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Hao Zhou
- Department of Mechanical Engineering, The University of Utah, Salt Lake City 84112, Utah, USA
| | - Tianli Feng
- Department of Mechanical Engineering, The University of Utah, Salt Lake City 84112, Utah, USA
| | - Biao Xu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
- Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| |
Collapse
|
46
|
Mingabudinova L, Giordano L, Tessier MD, Hens Z, Schiettecatte P. Mechanistic study of ZnSe nanocrystal formation from zinc halides. J Chem Phys 2023; 158:2895233. [PMID: 37290076 DOI: 10.1063/5.0144683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/12/2023] [Indexed: 06/10/2023] Open
Abstract
We studied the formation of zinc selenide (ZnSe) from zinc chloride (ZnCl2) and trioctylphosphine selenide (TOP=Se) in oleylamine, a chemistry originally proposed to grow ZnSe shells around InP core quantum dots. By monitoring the formation of ZnSe in reactions with and without InP seeds by quantitative absorbance and nuclear magnetic resonance (NMR) spectroscopy, we observe that the ZnSe formation rate is independent of the presence of InP cores. Similar to the seeded growth of CdSe and CdS, this observation supports a ZnSe growth mechanism through the inclusion of reactive ZnSe monomers that form homogeneously in the solution. Furthermore, by combining NMR and mass spectrometry, we identified the dominant reaction products of the ZnSe formation reaction as oleylammonium chloride and amino-substitutions of TOP, i.e., iminophosphoranes (TOP=NR), aminophosphonium chloride salts [TOP(NHR)Cl], and bis(amino)phosphoranes [TOP(NHR)2]. Based on the acquired results, we outline a reaction scheme that involves the complexation of TOP=Se by ZnCl2, followed by the nucleophilic addition of oleylamine onto the Lewis acid activated P-Se bond, thereby eliminating ZnSe monomers and forming amino-substitutions of TOP. Our work highlights the central role of oleylamine, acting as both the nucleophile and Brønsted base, in the transformation of metal halides and alkylphosphine chalcogenides into metal chalcogenides.
Collapse
Affiliation(s)
- Leila Mingabudinova
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, B-9000 Gent, Belgium
| | - Luca Giordano
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, B-9000 Gent, Belgium
| | - Mickael D Tessier
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, B-9000 Gent, Belgium
| | - Zeger Hens
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, B-9000 Gent, Belgium
| | - Pieter Schiettecatte
- Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, B-9000 Gent, Belgium
| |
Collapse
|
47
|
Banerjee D, Popy DA, Leininger BC, Creason TD, Mapara VN, Furis M, Borunda MF, Saparov B. Zero-Dimensional Broadband Yellow Light Emitter (TMS) 3Cu 2I 5 for Latent Fingerprint Detection and Solid-State Lighting. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37307198 DOI: 10.1021/acsami.3c04077] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report a new hybrid organic-inorganic Cu(I) halide, (TMS)3Cu2I5 (TMS = trimethylsulfonium), which demonstrates high efficiency and stable yellow light emission with a photoluminescence quantum yield (PLQY) over 25%. The zero-dimensional crystal structure of the compound is comprised of isolated face-sharing photoactive [Cu2I5]3- tetrahedral dimers surrounded by TMS+ cations. This promotes strong quantum confinement and electron-phonon coupling, leading to a highly efficient emission from self-trapped excitons. The hybrid structure ensures prolonged stability and nonblue emission compared to unstable blue emission from all-inorganic copper(I) halides. Substitution of Cu with Ag leads to (TMS)AgI2, which has a one-dimensional chain structure made of edge-sharing tetrahedra, with weak light emission properties. Improved stability and highly efficient yellow emission of (TMS)3Cu2I5 make it a candidate for practical applications. This has been demonstrated through utilization of (TMS)3Cu2I5 in white light-emitting diode with a high Color Rendering Index value of 82 and its use as a new luminescent agent for visualization of in-depth latent fingerprint features. This work illuminates a new direction in designing multifunctional nontoxic hybrid metal halides.
Collapse
Affiliation(s)
- Dhritiman Banerjee
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Dilruba A Popy
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Brian C Leininger
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Tielyr D Creason
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Varun Nitin Mapara
- Center for Quantum Research and Technology (CQRT)/Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, Oklahoma 73019, United States
| | - Madalina Furis
- Center for Quantum Research and Technology (CQRT)/Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, Oklahoma 73019, United States
| | - Mario F Borunda
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Bayram Saparov
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| |
Collapse
|
48
|
Vinçon I, Barfüßer A, Feldmann J, Akkerman QA. Quantum Dot Metal Salt Interactions Unraveled by the Sphere of Action Model. J Am Chem Soc 2023. [PMID: 37267531 DOI: 10.1021/jacs.3c03582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Postsynthetic metal salt treatments are frequently employed in the luminescence enhancement of quantum dots (QDs); however, its microscopic picture remains unclear. CsPbBr3-QDs, featuring strong excitonic absorption and high photoluminescence (PL) quantum yield, are ideal QDs to unravel the intricate interaction between QDs and such surface-bound metal salts. Herein, we study this interaction based on the controlled PL quenching of CsPbBr3-QDs with BiBr3. Upon the addition of BiBr3, an instant and complete PL quenching is observed, which can be fully recovered after the addition of an excess of PbBr2. This, together with the complete preservation of the excitonic absorption suggests a surface-driven adsorption equilibrium. Additionally, time-resolved studies reveal a non-homogeneous surface trap formation. Based on the so-called sphere of action model for the adsorption process, we show that already a single BiBr3 adsorption suffices to completely quench a QD's luminescence. This approach is expanded to analyze size-, ligand-, and metal-dependent quenching dynamics. Facet junctions are identified as regions of enhanced surface reactivity. A Langmuir-type ligand coverage is exposed with a strong impact on adsorption. Our results provide a detailed mechanistic insight into postsynthetic interaction of QDs with metal salts, opening pathways for future surface manipulations.
Collapse
Affiliation(s)
- Ilka Vinçon
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Anja Barfüßer
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| |
Collapse
|
49
|
Shi T, Chen X, He R, Huang H, Yuan X, Zhang Z, Wang J, Chu PK, Yu XF. Flexible All-Inorganic Perovskite Photodetector with a Combined Soft-Hard Layer Produced by Ligand Cross-Linking. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2302005. [PMID: 37246282 PMCID: PMC10401168 DOI: 10.1002/advs.202302005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/02/2023] [Indexed: 05/30/2023]
Abstract
Although perovskite nanocrystals have attracted considerable interests as emerging semiconductors in optoelectronic devices, design and fabrication of a deformable structure with high stability and flexibility while meeting the charge transport requirements remain a huge challenge. Herein, a combined soft-hard strategy is demonstrated to fabricate intrinsically flexible all-inorganic perovskite layers for photodetection via ligand cross-linking. Perfluorodecyltrichlorosilane (FDTS) is employed as the capping ligand and passivating agent bound to the CsPbBr3 surface via Pb-F and Br-F interactions. The SiCl head groups of FDTS are hydrolyzed to produce SiOH groups which subsequently condense to form the SiOSi network. The CsPbBr3 @FDTS nanocrystals (NCs) are monodispersed cubes with an average particle size of 13.03 nm and exhibit excellent optical stability. Furthermore, the residual hydroxyl groups on the surface of the CsPbBr3 @FDTS render the NCs tightly packed and cross-linked to each other to form a dense and elastic CsPbBr3 @FDTS film with soft and hard components. The photodetector based on the flexible CsPbBr3 @FDTS film exhibits outstanding mechanical flexibility and robust stability after 5000 bending cycles.
Collapse
Affiliation(s)
- Tongyu Shi
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xi Chen
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Rui He
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Hao Huang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Xinru Yuan
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhenyu Zhang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Jiahong Wang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
| | - Xue-Feng Yu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
| |
Collapse
|
50
|
Xu G, Wang C, Li Y, Meng W, Luo G, Peng M, Xu B, Deng Z. Solid-state synthesis of cesium manganese halide nanocrystals in glass with bright and broad red emission for white LEDs. Chem Sci 2023; 14:5309-5315. [PMID: 37234884 PMCID: PMC10207884 DOI: 10.1039/d3sc01084h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/15/2023] [Indexed: 05/28/2023] Open
Abstract
Recently, lead halide perovskite nanocrystals (NCs) have attracted extensive attention due to their unique optical properties. However, the toxicity of lead and the instability to moisture obstruct their further commercial development. Herein, a series of lead-free CsMnX3 (X = Cl, Br, and I) NCs embedded in glasses were synthesized by a high temperature solid-state chemistry method. These NCs embedded in glass can remain stable after soaking in water for 90 days. It is found that increasing the amount of cesium carbonate in the synthesis process can not only prevent the oxidation of Mn2+ to Mn3+ and promote the transparency of glass in the 450-700 nm region, but also significantly increase its photoluminescence quantum yield (PLQY) from 2.9% to 65.1%, which is the highest reported value of the red CsMnX3 NCs so far. Using CsMnBr3 NCs with a red emission peak at 649 nm and full-width-at-half-maximum (FWHM) of 130 nm as the red light source, a white light-emitting diode (LED) device with International Commission on illumination (CIE) coordinates of (0.33, 0.36) and a color rendering index (CRI) of 94 was obtained. These findings, together with future research, are likely to yield stable and bright lead-free NCs for the next generation of solid-state lighting.
Collapse
Affiliation(s)
- Guangyong Xu
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Chuying Wang
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Yacong Li
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Wen Meng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Guigen Luo
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Min Peng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Bin Xu
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Zhengtao Deng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| |
Collapse
|