1
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Guillemeney L, Dutta S, Valleix R, Patriarche G, Mahler B, Abécassis B. Ligand Tail Controls the Conformation of Indium Sulfide Ultrathin Nanoribbons. J Am Chem Soc 2024; 146:22318-22326. [PMID: 39078881 DOI: 10.1021/jacs.4c04905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
We report the conformational control of 2D ultrathin indium sulfide nanoribbons by tuning their amine ligands' alkyl chain. The initial orthorhombic InS nanoribbons bare n-octylamine ligands and display a highly curved geometry with a characteristic figure of eight shapes. Exchanging the native ligand by oleylamine induces their complete unfolding to yield flat board-shaped nanoribbons. Significant strain variations in the InS crystal structure accompany this shape-shifting. By tuning the linear alkyl chain length from 4 to 18 carbon atoms, we show using small-angle X-ray scattering in solution and transmission electron microscopy that the curvature of the nanoribbon subtly depends on the ligand-ligand interactions at the nanoribbon's surface. The curvature decreases gradually as the chain length increases, while carbon unsaturation has an unexpectedly significant effect at constant chain length. These experiments shed light on the critical role of the ligand monolayer on the curvature of ultrathin 2D crystalline nanosheets and demonstrate that weak supramolecular forces within the organic part of colloidal nanocrystals can dramatically impact their shape. This transduction mechanism, in which changes in the organic monolayer impact the shape of a nanocrystal, will help to devise new strategies to design stimuli-responsive systems that take advantage of both the flexibility of organic moieties and the physical properties of the inorganic core.
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Affiliation(s)
- Lilian Guillemeney
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Sarit Dutta
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Rodolphe Valleix
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Gilles Patriarche
- Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris Saclay, 91120 Palaiseau, France
| | - Benoît Mahler
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumiere Matière (iLM), F-69622 Villeurbanne, France
| | - Benjamin Abécassis
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
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2
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Ibrahem MA, Waris M, Miah MR, Shabani F, Canimkurbey B, Unal E, Delikanli S, Demir HV. Orientation-Dependent Photoconductivity of Quasi-2D Nanocrystal Self-Assemblies: Face-Down, Edge-Up Versus Randomly Oriented Quantum Wells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401423. [PMID: 38770984 DOI: 10.1002/smll.202401423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/30/2024] [Indexed: 05/22/2024]
Abstract
Here, strongly orientation-dependent lateral photoconductivity of a CdSe monolayer colloidal quantum wells (CQWs) possessing short-chain ligands is reported. A controlled liquid-air self-assembly technique is utilized to deliberately engineer the alignments of CQWs into either face-down (FO) or edge-up (EO) orientation on the substrate as opposed to randomly oriented (RO) CQWs prepared by spin-coating. Adapting planar configuration metal-semiconductor-metal (MSM) photodetectors, it is found that lateral conductivity spans ≈2 orders of magnitude depending on the orientation of CQWs in the film in the case of utilizing short ligands. The long native ligands of oleic acid (OA) are exchanged with short-chain ligands of 2-ethylhexane-1-thiol (EHT) to reduce the inter-platelet distance, which significantly improved the photoresponsivity from 4.16, 0.58, and 4.79 mA W-1 to 528.7, 6.17, and 94.2 mA W-1, for the MSM devices prepared with RO, FO, and EO, before and after ligands exchange, respectively. Such CQW orientation control profoundly impacts the photodetector performance also in terms of the detection speed (0.061 s/0.074 s for the FO, 0.048 s/0.060 s for the EO compared to 0.10 s/0.16 s for the RO, for the rise and decay time constants, respectively) and the detectivity (1.7 × 1010, 2.3 × 1011, and 7.5 × 1011 Jones for the FO, EO, and RO devices, respectively) which can be further tailored for the desired optoelectronic device applications. Attributed to charge transportation in colloidal films being proportional to the number of hopping steps, these findings indicate that the solution-processed orientation of CQWs provides the ability to tune the photoconductivity of CQWs with short ligands as another degree of freedom to exploit and engineer their absorptive devices.
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Affiliation(s)
- Mohammed A Ibrahem
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Laser Science and Technology Branch, Applied Sciences Department, University of Technology, Baghdad, 10066, Iraq
| | - Mohsin Waris
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Md Rumon Miah
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Farzan Shabani
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Betul Canimkurbey
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Serefeddin Health Services Vocational School, Central Research Laboratory, Amasya University, Amasya, 05100, Turkey
| | - Emre Unal
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Savas Delikanli
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Hilmi Volkan Demir
- Department of Electrical and Electronics Engineering, Department of Physics, UNAM - Institute of Materials Science and Nanotechnology and The National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Luminous! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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3
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Klepzig LF, Keppler NC, Rudolph DA, Schaate A, Behrens P, Lauth J. Highly Transparent, Yet Photoluminescent: 2D CdSe/CdS Nanoplatelet-Zeolitic Imidazolate Framework Composites Sensitive to Gas Adsorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309533. [PMID: 38078785 DOI: 10.1002/smll.202309533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Indexed: 05/03/2024]
Abstract
In this work, thin composite films of zeolitic imidazolate frameworks (ZIFs) and colloidal two-dimensional (2D) core-crown CdSe/CdS nanoplatelet (NPL) emitters with minimal scattering are formed by a cycled growth method and yield highly transparent coatings with strong and narrow photoluminescence of the NPLs at 546 nm (FWHM: 25 nm) in a solid-state composite structure. The porous ZIF matrix acts as functional encapsulation for the emitters and enables the adsorption of the guest molecules water and ethanol. The adsorption and desorption of the guest molecules is then characterized by a reversable photoluminescence change of the embedded NPLs. The transmittance of the composite films exceeds the values of uncoated glass at visible wavelengths where the NPL emitters show no absorption (>540 nm) and renders them anti-reflective coatings. At NPL absorption wavelengths (440-540 nm), the transmittance of the thin composite film-coated glass lies close to the transmittance of uncoated glass. The fast formation of innovative, smooth NPL/ZIF composite films without pre-polymerizing the colloidal 2D nanostructures first provides a powerful tool toward application-oriented photoluminescence-based gas sensing.
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Affiliation(s)
- Lars F Klepzig
- Institute of Physical Chemistry, Leibniz University Hannover, Callinstraße 3A, D-30167, Hannover, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), Leibniz University Hannover, Welfengarten 1A, D-30167, Hannover, Germany
| | - Nils C Keppler
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), Leibniz University Hannover, Welfengarten 1A, D-30167, Hannover, Germany
- Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, D-30167, Hannover, Germany
| | - Dominik A Rudolph
- Institute of Physical Chemistry, Leibniz University Hannover, Callinstraße 3A, D-30167, Hannover, Germany
| | - Andreas Schaate
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), Leibniz University Hannover, Welfengarten 1A, D-30167, Hannover, Germany
- Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering (LNQE), Leibniz University Hannover, Schneiderberg 39, D-30167, Hannover, Germany
| | - Peter Behrens
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), Leibniz University Hannover, Welfengarten 1A, D-30167, Hannover, Germany
- Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering (LNQE), Leibniz University Hannover, Schneiderberg 39, D-30167, Hannover, Germany
| | - Jannika Lauth
- Institute of Physical Chemistry, Leibniz University Hannover, Callinstraße 3A, D-30167, Hannover, Germany
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering - Innovation Across Disciplines), Leibniz University Hannover, Welfengarten 1A, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering (LNQE), Leibniz University Hannover, Schneiderberg 39, D-30167, Hannover, Germany
- Institute of Physical Chemistry and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-30167, Tübingen, Germany
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4
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Monego D, Dutta S, Grossman D, Krapez M, Bauer P, Hubley A, Margueritat J, Mahler B, Widmer-Cooper A, Abécassis B. Ligand-induced incompatible curvatures control ultrathin nanoplatelet polymorphism and chirality. Proc Natl Acad Sci U S A 2024; 121:e2316299121. [PMID: 38381786 PMCID: PMC10907275 DOI: 10.1073/pnas.2316299121] [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: 09/20/2023] [Accepted: 12/22/2023] [Indexed: 02/23/2024] Open
Abstract
The ability of thin materials to shape-shift is a common occurrence that leads to dynamic pattern formation and function in natural and man-made structures. However, harnessing this concept to rationally design inorganic structures at the nanoscale has remained far from reach due to a lack of fundamental understanding of the essential physical components. Here, we show that the interaction between organic ligands and the nanocrystal surface is responsible for the full range of chiral shapes seen in colloidal nanoplatelets. The adsorption of ligands results in incompatible curvatures on the top and bottom surfaces of the NPL, causing them to deform into helicoïds, helical ribbons, or tubes depending on the lateral dimensions and crystallographic orientation of the NPL. We demonstrate that nanoplatelets belong to the broad class of geometrically frustrated assemblies and exhibit one of their hallmark features: a transition between helicoïds and helical ribbons at a critical width. The effective curvature [Formula: see text] is the single aggregate parameter that encodes the details of the ligand/surface interaction, determining the nanoplatelets' geometry for a given width and crystallographic orientation. The conceptual framework described here will aid the rational design of dynamic, chiral nanostructures with high fundamental and practical relevance.
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Affiliation(s)
- Debora Monego
- School of Chemistry, Australian Research Council (ARC) Centre of Excellence in Exciton Science, University of Sydney, Sydney, NSW2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, NSW2006, Australia
| | - Sarit Dutta
- ENSL, CNRS, Laboratoire de Chimie, UMR 5182, 46 allée d’Italie, LyonF-69364, France
| | - Doron Grossman
- Laboratoire d’hydrodynamique (LadHyX), UMR, École Polytechnique, CNRS, PalaiseauF-91128, France
| | - Marion Krapez
- School of Chemistry, Australian Research Council (ARC) Centre of Excellence in Exciton Science, University of Sydney, Sydney, NSW2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, NSW2006, Australia
| | - Pierre Bauer
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, VilleurbanneF-69622, France
| | - Austin Hubley
- ENSL, CNRS, Laboratoire de Chimie, UMR 5182, 46 allée d’Italie, LyonF-69364, France
| | - Jérémie Margueritat
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, VilleurbanneF-69622, France
| | - Benoit Mahler
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, VilleurbanneF-69622, France
| | - Asaph Widmer-Cooper
- School of Chemistry, Australian Research Council (ARC) Centre of Excellence in Exciton Science, University of Sydney, Sydney, NSW2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, NSW2006, Australia
| | - Benjamin Abécassis
- ENSL, CNRS, Laboratoire de Chimie, UMR 5182, 46 allée d’Italie, LyonF-69364, France
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5
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van der Sluijs M, Vliem JF, de Wit JW, Rietveld JJ, Meeldijk JD, Vanmaekelbergh DAM. Cation Exchange and Spontaneous Crystal Repair Resulting in Ultrathin, Planar CdS Nanosheets. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:8301-8308. [PMID: 37840776 PMCID: PMC10568967 DOI: 10.1021/acs.chemmater.3c01900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/15/2023] [Indexed: 10/17/2023]
Abstract
Cation exchange has become a major postsynthetic tool to obtain nanocrystals with a combination of stoichiometry, size, and shape that is challenging to achieve by direct wet-chemical synthesis. Here, we report on the transformation of highly anisotropic, ultrathin, and planar PbS nanosheets into CdS nanosheets of the same dimensions. We monitor the evolution of the Cd-for-Pb exchange by ex-situ TEM, HAADF-STEM, and EDX. We observe that in the early stages of the exchange the sheets show large in-sheet voids that repair spontaneously upon further exchange and annealing, resulting in ultrathin, planar, and crystalline CdS nanosheets. After cation exchange, the nanosheets show broad sub-band gap luminescence, as often observed in CdS nanocrystals. The photoluminescence excitation spectrum reveals the heavy- and light-hole exciton features, with very strong quantum confinement and large electron-hole Coulomb energy, typical for 2D ultrathin Cd-chalcogenide nanosheets.
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Affiliation(s)
- Maaike
M. van der Sluijs
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Jara F. Vliem
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Jur W. de Wit
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Jeppe J. Rietveld
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Johannes D. Meeldijk
- Electron
Microscopy Centre, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, Netherlands
| | - Daniel A. M. Vanmaekelbergh
- Condensed
Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
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6
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Marino E, Jiang Z, Kodger TE, Murray CB, Schall P. Controlled Assembly of CdSe Nanoplatelet Thin Films and Nanowires. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12533-12540. [PMID: 37561597 PMCID: PMC10501200 DOI: 10.1021/acs.langmuir.3c00933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/03/2023] [Indexed: 08/12/2023]
Abstract
We assemble semiconductor CdSe nanoplatelets (NPs) at the air/liquid interface into 2D monolayers several micrometers wide, distinctly displaying nematic order. We show that this configuration is the most favorable energetically and that the edge-to-edge distance between neighboring NPs can be tuned by ligand exchange without disrupting film topology and nanoparticle orientation. We explore the rich assembly phase space by using depletion interactions to direct the formation of 1D nanowires from stacks of NPs. The improved control and understanding of the assembly of semiconductor NPs offers opportunities for the development of cheaper optoelectronic devices that rely on 1D or 2D charge delocalization throughout the assembled monolayers and nanowires.
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Affiliation(s)
- Emanuele Marino
- Van
der Waals−Zeeman Institute, University
of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
- Department
of Chemistry, University of Pennsylvania, 231 S. 34th St., 19104 Philadelphia, (Pennsylvania), United States
- Dipartimento
di Fisica e Chimica, Università degli
Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - Zhiqiao Jiang
- Department
of Chemistry, University of Pennsylvania, 231 S. 34th St., 19104 Philadelphia, (Pennsylvania), United States
- Department
of Materials Science and Engineering, University
of Pennsylvania, 3231 Walnut Street, 19104 Philadelphia (Pennsylvania), United States
| | - Thomas E. Kodger
- Van
der Waals−Zeeman Institute, University
of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
- Physical
Chemistry and Soft Matter, Wageningen University
and Research, Stippeneng 4, 6708WE Wageningen, The Netherlands
| | - Christopher B. Murray
- Department
of Chemistry, University of Pennsylvania, 231 S. 34th St., 19104 Philadelphia, (Pennsylvania), United States
- Department
of Materials Science and Engineering, University
of Pennsylvania, 3231 Walnut Street, 19104 Philadelphia (Pennsylvania), United States
| | - Peter Schall
- Van
der Waals−Zeeman Institute, University
of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
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7
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Carrasco D, García-Dalí S, Villar-Rodil S, Munuera JM, Raymundo-Piñero E, Paredes JI. NbSe 2 Nanosheets/Nanorolls Obtained via Fast and Direct Aqueous Electrochemical Exfoliation for High-Capacity Lithium Storage. ACS APPLIED ENERGY MATERIALS 2023; 6:7180-7193. [PMID: 37448979 PMCID: PMC10337822 DOI: 10.1021/acsaem.3c00893] [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: 04/05/2023] [Accepted: 06/03/2023] [Indexed: 07/18/2023]
Abstract
Layered transition-metal dichalcogenides (LTMDs) in two-dimensional (2D) form are attractive for electrochemical energy storage, but research efforts in this realm have so far largely focused on the best-known members of such a family of materials, mainly MoS2, MoSe2, and WS2. To exploit the potential of further, currently less-studied 2D LTMDs, targeted methods for their production, preferably by cost-effective and sustainable means, as well as control over their nanomorphology, are highly desirable. Here, we report a quick and straightforward route for the preparation of 2D NbSe2 and other metallic 2D LTMDs that relies on delaminating their bulk parent solid under aqueous cathodic conditions. Unlike typical electrochemical exfoliation methods for 2D materials, which generally require an additional processing step (e.g., sonication) to complete delamination, the present electrolytic strategy yielded directly exfoliated nano-objects in a very short time (1-2 min) and with significant yields (∼16 wt %). Moreover, the dominant morphology of the exfoliated 2D NbSe2 products could be tuned between rolled-up nanosheets (nanorolls) and unfolded nanosheets, depending on the solvent where the nano-objects were dispersed (water or isopropanol). This rather unusual delamination behavior of NbSe2 was explored and concluded to occur via a redox mechanism that involves some degree of hydrolytic oxidation of the material triggered by the cathodic treatment. The delamination strategy could be extended to other metallic LTMDs, such as NbS2 and VSe2. When tested toward electrochemical lithium storage, electrodes based on the exfoliated NbSe2 products delivered very high capacity values, up to 750-800 mA h g-1 at 0.5 A g-1, where the positive effect of the nanoroll morphology, associated to increased accessibility of the lithium storage sites, was made apparent. Overall, these results are expected to expand the availability of fit-for-purpose 2D LTMDs by resorting to simple and expeditious production strategies of low environmental impact.
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Affiliation(s)
- Daniel
F. Carrasco
- Instituto
de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, Oviedo 33011, Spain
| | - Sergio García-Dalí
- Instituto
de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, Oviedo 33011, Spain
- CNRS,
CEMHTI UPR3079, Univ. Orléans, 1D Avenue de la Recherche Scientifique, Orléans 45071, France
| | - Silvia Villar-Rodil
- Instituto
de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, Oviedo 33011, Spain
| | - José M. Munuera
- Instituto
de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, Oviedo 33011, Spain
| | | | - Juan I. Paredes
- Instituto
de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, Oviedo 33011, Spain
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8
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Durmusoglu EG, Hu S, Hernandez-Martinez PL, Izmir M, Shabani F, Guo M, Gao H, Isik F, Delikanli S, Sharma VK, Liu B, Demir HV. High External Quantum Efficiency Light-Emitting Diodes Enabled by Advanced Heterostructures of Type-II Nanoplatelets. ACS NANO 2023; 17:7636-7644. [PMID: 36912794 PMCID: PMC10134493 DOI: 10.1021/acsnano.3c00046] [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: 01/04/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Colloidal quantum wells (CQWs), also known as nanoplatelets (NPLs), are exciting material systems for numerous photonic applications, including lasers and light-emitting diodes (LEDs). Although many successful type-I NPL-LEDs with high device performance have been demonstrated, type-II NPLs are not fully exploited for LED applications, even with alloyed type-II NPLs with enhanced optical properties. Here, we present the development of CdSe/CdTe/CdSe core/crown/crown (multi-crowned) type-II NPLs and systematic investigation of their optical properties, including their comparison with the traditional core/crown counterparts. Unlike traditional type-II NPLs such as CdSe/CdTe, CdTe/CdSe, and CdSe/CdSexTe1-x core/crown heterostructures, here the proposed advanced heterostructure reaps the benefits of having two type-II transition channels, resulting in a high quantum yield (QY) of 83% and a long fluorescence lifetime of 73.3 ns. These type-II transitions were confirmed experimentally by optical measurements and theoretically using electron and hole wave function modeling. Computational study shows that the multi-crowned NPLs provide a better-distributed hole wave function along the CdTe crown, while the electron wave function is delocalized in the CdSe core and CdSe crown layers. As a proof-of-concept demonstration, NPL-LEDs based on these multi-crowned NPLs were designed and fabricated with a record high external quantum efficiency (EQE) of 7.83% among type-II NPL-LEDs. These findings are expected to induce advanced designs of NPL heterostructures to reach a fascinating level of performance, especially in LEDs and lasers.
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Affiliation(s)
- Emek G. Durmusoglu
- LUMINOUS!
Centre of Excellence for Semiconductor Lighting and Displays, The
Photonics Institute, School of Electrical and Electronic Engineering,
School of Physical and Mathematical Sciences, School of Materials
Science and Engineering, Nanyang Technological
University, Singapore 639798
| | - Sujuan Hu
- State
Key Laboratory of Optoelectronic Materials and Technologies, School
of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Pedro Ludwig Hernandez-Martinez
- LUMINOUS!
Centre of Excellence for Semiconductor Lighting and Displays, The
Photonics Institute, School of Electrical and Electronic Engineering,
School of Physical and Mathematical Sciences, School of Materials
Science and Engineering, Nanyang Technological
University, Singapore 639798
| | - Merve Izmir
- LUMINOUS!
Centre of Excellence for Semiconductor Lighting and Displays, The
Photonics Institute, School of Electrical and Electronic Engineering,
School of Physical and Mathematical Sciences, School of Materials
Science and Engineering, Nanyang Technological
University, Singapore 639798
| | - Farzan Shabani
- Department
of Electrical and Electronics Engineering, Department of Physics,
UNAM—Institute of Materials Science and Nanotechnology and
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Min Guo
- State
Key Laboratory of Optoelectronic Materials and Technologies, School
of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Huayu Gao
- State
Key Laboratory of Optoelectronic Materials and Technologies, School
of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Furkan Isik
- Department
of Electrical and Electronics Engineering, Department of Physics,
UNAM—Institute of Materials Science and Nanotechnology and
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Savas Delikanli
- Department
of Electrical and Electronics Engineering, Department of Physics,
UNAM—Institute of Materials Science and Nanotechnology and
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Vijay Kumar Sharma
- LUMINOUS!
Centre of Excellence for Semiconductor Lighting and Displays, The
Photonics Institute, School of Electrical and Electronic Engineering,
School of Physical and Mathematical Sciences, School of Materials
Science and Engineering, Nanyang Technological
University, Singapore 639798
| | - Baiquan Liu
- State
Key Laboratory of Optoelectronic Materials and Technologies, School
of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Hilmi Volkan Demir
- LUMINOUS!
Centre of Excellence for Semiconductor Lighting and Displays, The
Photonics Institute, School of Electrical and Electronic Engineering,
School of Physical and Mathematical Sciences, School of Materials
Science and Engineering, Nanyang Technological
University, Singapore 639798
- Department
of Electrical and Electronics Engineering, Department of Physics,
UNAM—Institute of Materials Science and Nanotechnology and
National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
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9
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Diroll BT, Guzelturk B, Po H, Dabard C, Fu N, Makke L, Lhuillier E, Ithurria S. 2D II-VI Semiconductor Nanoplatelets: From Material Synthesis to Optoelectronic Integration. Chem Rev 2023; 123:3543-3624. [PMID: 36724544 DOI: 10.1021/acs.chemrev.2c00436] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The field of colloidal synthesis of semiconductors emerged 40 years ago and has reached a certain level of maturity thanks to the use of nanocrystals as phosphors in commercial displays. In particular, II-VI semiconductors based on cadmium, zinc, or mercury chalcogenides can now be synthesized with tailored shapes, composition by alloying, and even as nanocrystal heterostructures. Fifteen years ago, II-VI semiconductor nanoplatelets injected new ideas into this field. Indeed, despite the emergence of other promising semiconductors such as halide perovskites or 2D transition metal dichalcogenides, colloidal II-VI semiconductor nanoplatelets remain among the narrowest room-temperature emitters that can be synthesized over a wide spectral range, and they exhibit good material stability over time. Such nanoplatelets are scientifically and technologically interesting because they exhibit optical features and production advantages at the intersection of those expected from colloidal quantum dots and epitaxial quantum wells. In organic solvents, gram-scale syntheses can produce nanoparticles with the same thicknesses and optical properties without inhomogeneous broadening. In such nanoplatelets, quantum confinement is limited to one dimension, defined at the atomic scale, which allows them to be treated as quantum wells. In this review, we discuss the synthetic developments, spectroscopic properties, and applications of such nanoplatelets. Covering growth mechanisms, we explain how a thorough understanding of nanoplatelet growth has enabled the development of nanoplatelets and heterostructured nanoplatelets with multiple emission colors, spatially localized excitations, narrow emission, and high quantum yields over a wide spectral range. Moreover, nanoplatelets, with their large lateral extension and their thin short axis and low dielectric surroundings, can support one or several electron-hole pairs with large exciton binding energies. Thus, we also discuss how the relaxation processes and lifetime of the carriers and excitons are modified in nanoplatelets compared to both spherical quantum dots and epitaxial quantum wells. Finally, we explore how nanoplatelets, with their strong and narrow emission, can be considered as ideal candidates for pure-color light emitting diodes (LEDs), strong gain media for lasers, or for use in luminescent light concentrators.
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Affiliation(s)
- Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Burak Guzelturk
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Hong Po
- Laboratoire de Physique et d'Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université Univ Paris 06, CNRS UMR 8213, 10 rue Vauquelin 75005 Paris, France
| | - Corentin Dabard
- Laboratoire de Physique et d'Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université Univ Paris 06, CNRS UMR 8213, 10 rue Vauquelin 75005 Paris, France
| | - Ningyuan Fu
- Laboratoire de Physique et d'Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université Univ Paris 06, CNRS UMR 8213, 10 rue Vauquelin 75005 Paris, France
| | - Lina Makke
- Laboratoire de Physique et d'Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université Univ Paris 06, CNRS UMR 8213, 10 rue Vauquelin 75005 Paris, France
| | - Emmanuel Lhuillier
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, 75005 Paris, France
| | - Sandrine Ithurria
- Laboratoire de Physique et d'Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université Univ Paris 06, CNRS UMR 8213, 10 rue Vauquelin 75005 Paris, France
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10
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Petersen N, Girard M, Riedinger A, Valsson O. The Crucial Role of Solvation Forces in the Steric Stabilization of Nanoplatelets. NANO LETTERS 2022; 22:9847-9853. [PMID: 36493312 PMCID: PMC9801426 DOI: 10.1021/acs.nanolett.2c02848] [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: 07/20/2022] [Revised: 12/02/2022] [Indexed: 06/17/2023]
Abstract
The steric stability of inorganic colloidal particles in an apolar solvent is usually described in terms of the balance between three contributions: the van der Waals attraction, the free energy of mixing, and the ligand compression. However, in the case of nanoparticles, the discrete nature of the ligand shell and the solvent has to be taken into account. Cadmium selenide nanoplatelets are a special case. They combine a weak van der Waals attraction and a large facet to particle size ratio. We use coarse grained molecular dynamics simulations of nanoplatelets in octane to demonstrate that solvation forces are strong enough to induce the formation of nanoplatelet stacks and by that have a crucial impact on the steric stability. In particular, we demonstrate that for sufficiently large nanoplatelets, solvation forces are proportional to the interacting facet area, and their strength is intrinsically tied to the softness of the ligand shell.
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Affiliation(s)
- Nanning Petersen
- Max
Planck Institute for Polymer Research, Mainz D-55128, Germany
| | - Martin Girard
- Max
Planck Institute for Polymer Research, Mainz D-55128, Germany
| | | | - Omar Valsson
- Max
Planck Institute for Polymer Research, Mainz D-55128, Germany
- Department
of Chemistry, University of North Texas, Denton, Texas 76201, United States
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11
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Li F, Klepzig LF, Keppler N, Behrens P, Bigall NC, Menzel H, Lauth J. Layer-by-Layer Deposition of 2D CdSe/CdS Nanoplatelets and Polymers for Photoluminescent Composite Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11149-11159. [PMID: 36067458 DOI: 10.1021/acs.langmuir.2c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2D) semiconductor nanoplatelets (NPLs) are strongly photoluminescent materials with interesting properties for optoelectronics. Especially their narrow photoluminescence paired with a high quantum yield is promising for light emission applications with high color purity. However, retaining these features in solid-state thin films together with an efficient encapsulation of the NPLs is a challenge, especially when trying to achieve high-quality films with a defined optical density and low surface roughness. Here, we show photoluminescent polymer-encapsulated inorganic-organic nanocomposite coatings of 2D CdSe/CdS NPLs in poly(diallyldimethylammonium chloride) (PDDA) and poly(ethylenimine) (PEI), which are prepared by sequential layer-by-layer (LbL) deposition. The electrostatic interaction between the positively charged polyelectrolytes and aqueous phase-transferred NPLs with negatively charged surface ligands is used as a driving force to achieve self-assembled nanocomposite coatings with a well-controlled layer thickness and surface roughness. Increasing the repulsive forces between the NPLs by increasing the pH value of the dispersion leads to the formation of nanocomposites with all NPLs arranging flat on the substrate, while the surface roughness of the 165 nm (50 bilayers) thick coating decreases to Ra = 14 nm. The photoluminescence properties of the nanocomposites are determined by the atomic layer thickness of the NPLs and the 11-mercaptoundecanoic acid ligand used for their phase transfer. Both the full width at half-maximum (20.5 nm) and the position (548 nm) of the nanocomposite photoluminescence are retained in comparison to the colloidal CdSe/CdS NPLs in aqueous dispersion, while the measured photoluminescence quantum yield of 5% is competitive to state-of-the-art nanomaterial coatings. Our approach yields stable polymer-encapsulated CdSe/CdS NPLs in smooth coatings with controllable film thickness, rendering the LbL deposition technique a powerful tool for the fabrication of solid-state photoluminescent nanocomposites.
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Affiliation(s)
- Fuzhao Li
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute for Technical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Lars F Klepzig
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167 Hannover, Germany
| | - Nils Keppler
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute of Inorganic Chemistry, Leibniz Universität Hannover, Callinstraße 9, 30167 Hannover, Germany
| | - Peter Behrens
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute of Inorganic Chemistry, Leibniz Universität Hannover, Callinstraße 9, 30167 Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Schneiderberg 39, 30167 Hannover, Germany
| | - Nadja C Bigall
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167 Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Schneiderberg 39, 30167 Hannover, Germany
| | - Henning Menzel
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute for Technical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Jannika Lauth
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering─Innovation Across Disciplines), 30167 Hannover, Germany
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167 Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Schneiderberg 39, 30167 Hannover, Germany
- Institute of Physical and Theoretical Chemistry, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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12
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Weiss R, VanOrman ZA, Sullivan CM, Nienhaus L. A Sensitizer of Purpose: Generating Triplet Excitons with Semiconductor Nanocrystals. ACS MATERIALS AU 2022; 2:641-654. [PMID: 36855545 PMCID: PMC9928406 DOI: 10.1021/acsmaterialsau.2c00047] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/28/2022]
Abstract
The process of photon upconversion promises importance for many optoelectronic applications, as it can result in higher efficiencies and more effective photon management. Upconversion via triplet-triplet annihilation (TTA) occurs at low incident powers and at high efficiencies, requirements for integration into existing optoelectronic devices. Semiconductor nanocrystals are a diverse class of triplet sensitizers with advantages over traditional molecular sensitizers such as energetic tunability and minimal energy loss during the triplet sensitization process. In this Perspective, we review current progress in semiconductor nanocrystal triplet sensitization, specifically focusing on the nanocrystal, the ligand shell which surrounds the nanocrystal, and progress in solid-state sensitization. Finally, we discuss potential areas of improvement which could result in more efficient upconversion systems sensitized by semiconductor nanocrystals. Specifically, we focus on the development of solid-state TTA upconversion systems, elucidation of the energy transfer mechanisms from nanocrystal to transmitter ligand which underpin the upconversion process and propose novel configurations of nanocrystal-sensitized systems.
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13
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Liu Z, Li Z, Li B, Zhou L, Zhang H, Han J. Hybrid Macrocyclic Polymers: Self-Assembly Containing Cucurbit[m]uril-pillar[n]arene. Polymers (Basel) 2022; 14:1777. [PMID: 35566949 PMCID: PMC9106019 DOI: 10.3390/polym14091777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 02/01/2023] Open
Abstract
Supramolecular self-assembly by hybrid macrocycles containing both cucurbit[m]uril (CB[m]) and pillar[n]arene was discussed and summarized in this review. Due to different solubility, diverse-sized cavities, and various driving forces in recognizing guests, the role of CB[m] and pillar[n]arene in such hybrid macrocyclic systems could switch between competitor in capturing specialized guests, and cooperator for building advanced hybridized macrocycles, by controlling their characteristics in host-guest inclusions. Furthermore, both CB[m] and pillar[n]arene were employed for fabricating advanced supramolecular self-assemblies such as mechanically interlocked molecules and supramolecular polymers. In those self-assemblies, CB[m] and pillar[n]arene played significant roles in, e.g., microreactor for catalyzing particular reactions to bridge different small pieces together, molecular "joint" to connect different monomers into larger assemblies, and "stabilizer" in accommodating the guest molecules to adopt a favorite structure geometry ready for assembling.
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Affiliation(s)
- Zhaona Liu
- Medical School, Xi’an Peihua University, Xi’an 710125, China;
| | - Zhizheng Li
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (Z.L.); (B.L.); (L.Z.)
| | - Bing Li
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (Z.L.); (B.L.); (L.Z.)
| | - Le Zhou
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (Z.L.); (B.L.); (L.Z.)
| | - Huacheng Zhang
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (Z.L.); (B.L.); (L.Z.)
| | - Jie Han
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
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