1
|
Duan J, Li J, Divitini G, Cortecchia D, Yuan F, You J, Liu SF, Petrozza A, Wu Z, Xi J. 2D Hybrid Perovskites: From Static and Dynamic Structures to Potential Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403455. [PMID: 38723249 DOI: 10.1002/adma.202403455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/29/2024] [Indexed: 05/22/2024]
Abstract
2D perovskites have received great attention recently due to their structural tunability and environmental stability, making them highly promising candidates for various applications by breaking property bottlenecks that affect established materials. However, in 2D perovskites, the complicated interplay between organic spacers and inorganic slabs makes structural analysis challenging to interpret. A deeper understanding of the structure-property relationship in these systems is urgently needed to enable high-performance tunable optoelectronic devices. Herein, this study examines how structural changes, from constant lattice distortion and variable structural evolution, modeled with both static and dynamic structural descriptors, affect macroscopic properties and ultimately device performance. The effect of chemical composition, crystallographic inhomogeneity, and mechanical-stress-induced static structural changes and corresponding electronic band variations is reported. In addition, the structure dynamics are described from the viewpoint of anharmonic vibrations, which impact electron-phonon coupling and the carriers' dynamic processes. Correlated carrier-matter interactions, known as polarons and acting on fine electronic structures, are then discussed. Finally, reliable guidelines to facilitate design to exploit structural features and rationally achieve breakthroughs in 2D perovskite applications are proposed. This review provides a global structural landscape of 2D perovskites, expected to promote the prosperity of these materials in emerging device applications.
Collapse
Affiliation(s)
- Jianing Duan
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jingrui Li
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, School of Electronic Science and Engineering & International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Giorgio Divitini
- Electron Spectroscopy and Nanoscopy, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy
| | - Daniele Cortecchia
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna, 40129, Italy
- Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia, via Rubattino 81, Milano, 20134, Italy
| | - Fang Yuan
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jiaxue You
- Department of Materials Science and Engineering, Hong Kong Institute for Clean Energy, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Annamaria Petrozza
- Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia, via Rubattino 81, Milano, 20134, Italy
| | - Zhaoxin Wu
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jun Xi
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| |
Collapse
|
2
|
Sahu S, Debnath T, Sahu K. Reversible CsPbBr 3 ↔ CsPb 2Br 5 Transformation via Reverse Micellar Aqueous Solution. J Phys Chem Lett 2024; 15:3677-3682. [PMID: 38535976 DOI: 10.1021/acs.jpclett.4c00451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Lead halide perovskites suffer from water and moisture instability due to the highly ionic nature of the crystal structures, though a few groups took advantage of it for chemical transformation via water-assisted strategy. However, direct exposure of the perovskite to bulk water leads to uncontrolled chemical transformation. Here, we report a controlled chemical transformation of CsPbBr3 to CsPb2Br5 triggered by nanoconfined water by placing CsPbBr3 in the nonpolar phase within a reverse micelle. The chemical transformation reaction is probed by using steady-state and time-resolved optical spectroscopy. We observe absorption and photoluminescence in the UV region stemming clearly from the CsPb2Br5 phase upon interaction with the reverse micellar aqueous solution. Transmission electron microscopy and X-ray diffraction measurements further provided the structure and morphology. Our results direct the formation of CsPbBr3-CsPb2Br5 nanocomposite under dry conditions while the chemically transformed CsPb2Br5 phase exists only in moist conditions, which we explain via the CsBr-stripping mechanism.
Collapse
Affiliation(s)
- Subhashree Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Tushar Debnath
- Nano Physical Spectroscopy Group, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi NCR, Uttar Pradesh 201314, India
| | - Kalyanasis Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| |
Collapse
|
3
|
Lin F, Zhang S, Zou B, Zeng R. Excited State Regulated Emission in Hybrid Indium Halides via Crystal Structure Switch. Inorg Chem 2024; 63:4355-4363. [PMID: 38383064 DOI: 10.1021/acs.inorgchem.3c04630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Organic-inorganic metal halides have become one of the most promising materials in the next generation of optoelectronic applications due to their high charge carrier mobility and tunable band gaps. In this study, Sb:PA6InCl9 and Sb:PA4NaInCl8 single crystals were prepared through evaporation crystallization, respectively. Due to the different degrees of lattice distortions, the highly efficient yellow emission in Sb:PA6InCl9 at 610 nm and the green emission in Sb:PA4NaInCl8 at 545 nm were achieved by regulation of the excited state, respectively. By introducing additional sodium ions in the post-treatment, we found that the zero-dimensional Sb:PA6InCl9 could rapidly convert into a two-dimensional layered structure of Sb:PA4NaInCl8, thus resulting in a novel green/yellow emission switch. This work guides the structural and performance control of organic-inorganic hybrid In-based metal halides and offers broad prospects for luminescent switching in anticounterfeiting applications.
Collapse
Affiliation(s)
- Fangping Lin
- School of Physical Science and Technology, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Shuai Zhang
- School of Physical Science and Technology, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Bingsuo Zou
- School of Physical Science and Technology, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Ruosheng Zeng
- School of Physical Science and Technology, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| |
Collapse
|
4
|
Mann JG, He F, Akkerman QA, Debnath T, Feldmann J. A Bound Exciton Resonance Modulated by Bulk and Localized Coherent Phonons in Double Perovskites. J Phys Chem Lett 2024; 15:2169-2176. [PMID: 38373052 DOI: 10.1021/acs.jpclett.3c03443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Optically excited electronic excitations are coupled to the soft and polar halide perovskite lattice, generating coherent phonons after subpicosecond interband laser-excitation. In Ag-based halide double perovskites, Ag-vacancies can bind free excitons, resulting in a pronounced bound exciton resonance. Here, we report the detection of three modulation frequencies corresponding to coherent phonons in Ag-based double perovskite nanocrystals at distinct spectral positions at the bound exciton resonance. Two of them are found in oscillatory spectral shifts of the bound exciton resonance and are identified as Cs- and Br-related bulk phonons. Surprisingly, a third frequency is observed as an intensity modulation. We argue that this amplitude oscillation is a consequence of an optically generated vibronic wave packet localized at a Ag-vacancy. Consequently, the localized coherent phonon modulates the giant oscillator strength of the bound exciton. This optically induced and spatially localized lattice shaking could potentially be useful for initiating photochemical reactions with atomic precision.
Collapse
Affiliation(s)
- Julian G Mann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| | - Fei He
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| | - Tushar Debnath
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Nano Physical Spectroscopy Group, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi NCR, Uttar Pradesh 201314, India
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| |
Collapse
|
5
|
Zhang Y, Zhao B, Liu L, Zhou J, Ma X, Wang N. Efficient Tin Perovskite Solar Cells via Suppressing Autoxidation in Inert Atmosphere. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306115. [PMID: 37775951 DOI: 10.1002/smll.202306115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/22/2023] [Indexed: 10/01/2023]
Abstract
The unsatisfactory power conversion efficiency (PCE) and long-term stability of tin perovskite solar cells (TPSCs) restrict its further development as alternatives to lead perovskite solar cells (LPSCs). Considerable research has focused on the negative impacts of O2 and H2 O, while discussions about degradation mechanism in an inert atmosphere remains insufficient. Herein, the light-induced autoxidation of tin perovskite in nitrogen atmosphere is revealed for the first time and the elastic lattice distortion is demonstrated as the crucial role of rapid degradation. The continuous injection of photons induces energy transfer from excited A-site cations to vibrating Sn-I framework, leading to the elastic deformation of perovskite lattice. Consequently, the over distorted Sn-I framework releases free iodine and further oxidizes Sn2+ in the form of molecular iodine. Through an appropriately designed light-dark cyclic test, a remarkable PCE of 14.41% is achieved based on (Cs0.025 (MA0.25 FA0.75 )0.975 ) 0.98 EDA0.01 SnI3 solar cells, which is the record of hybrid triple TPSCs so far. The findings unveil autoxidation as the crux of TPSCs' degradation in an inert atmosphere and suggest the possibility of reinforcing the tin perovskite lattice towards highly efficient and stable TPSCs.
Collapse
Affiliation(s)
- Yu Zhang
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Bin Zhao
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Lang Liu
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Jianheng Zhou
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Xue Ma
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Ning Wang
- College of Physics, Jilin University, Changchun, 130012, P. R. China
| |
Collapse
|
6
|
Kim J, Xu Y, Bain D, Li M, Cotlet M, Yu Q, Musser AJ. Small to Large Polaron Behavior Induced by Controlled Interactions in Perovskite Quantum Dot Solids. ACS NANO 2023; 17:23079-23093. [PMID: 37934023 DOI: 10.1021/acsnano.3c08748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The polaron is an essential photoexcitation that governs the unique optoelectronic properties of organic-inorganic hybrid halide perovskites, and it has been subject to extensive spectroscopic and theoretical investigation over the past decade. A crucial but underexplored question is how the nature of the photogenerated polarons is impacted by the microscopic perovskite structure and what functional properties this affects. To tackle this question, we chemically tuned the interactions between perovskite quantum dots (QDs) to rationally manipulate the polaron properties. Through a suite of time-resolved spectroscopies, we find that inter-QD interactions open an excited-state channel to form large polaron species, which exhibit enhanced spatial diffusion, slower hot polaron cooling, and a longer intrinsic lifetime. At the same time, polaronic excitons are formed in competition via localized band-edge states, exhibiting strong photoluminescence but are limited by shorter intrinsic lifetimes. This control of polaron type and function through tunable inter-QD interactions not only provides design principles for QD-based materials but also experimentally disentangles polaronic species in hybrid perovskite materials.
Collapse
Affiliation(s)
- Juno Kim
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Yuanze Xu
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - David Bain
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Mingxing Li
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Mircea Cotlet
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Qiuming Yu
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Andrew J Musser
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| |
Collapse
|
7
|
Yazdani N, Bodnarchuk MI, Bertolotti F, Masciocchi N, Fureraj I, Guzelturk B, Cotts BL, Zajac M, Rainò G, Jansen M, Boehme SC, Yarema M, Lin MF, Kozina M, Reid A, Shen X, Weathersby S, Wang X, Vauthey E, Guagliardi A, Kovalenko MV, Wood V, Lindenberg AM. Coupling to octahedral tilts in halide perovskite nanocrystals induces phonon-mediated attractive interactions between excitons. NATURE PHYSICS 2023; 20:47-53. [PMID: 38261834 PMCID: PMC10791581 DOI: 10.1038/s41567-023-02253-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/15/2023] [Indexed: 01/25/2024]
Abstract
Understanding the origin of electron-phonon coupling in lead halide perovskites is key to interpreting and leveraging their optical and electronic properties. Here we show that photoexcitation drives a reduction of the lead-halide-lead bond angles, a result of deformation potential coupling to low-energy optical phonons. We accomplish this by performing femtosecond-resolved, optical-pump-electron-diffraction-probe measurements to quantify the lattice reorganization occurring as a result of photoexcitation in nanocrystals of FAPbBr3. Our results indicate a stronger coupling in FAPbBr3 than CsPbBr3. We attribute the enhanced coupling in FAPbBr3 to its disordered crystal structure, which persists down to cryogenic temperatures. We find the reorganizations induced by each exciton in a multi-excitonic state constructively interfere, giving rise to a coupling strength that scales quadratically with the exciton number. This superlinear scaling induces phonon-mediated attractive interactions between excitations in lead halide perovskites.
Collapse
Affiliation(s)
- Nuri Yazdani
- Department of Materials Science and Engineering, Stanford University, Stanford, CA USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA USA
- Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Maryna I. Bodnarchuk
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Federica Bertolotti
- Dipartimento di Scienza e Alta Tecnologia & To.Sca.Lab, Università dell’Insubria, Como, Italy
| | - Norberto Masciocchi
- Dipartimento di Scienza e Alta Tecnologia & To.Sca.Lab, Università dell’Insubria, Como, Italy
| | - Ina Fureraj
- Department of Physical Chemistry, University of Geneva, Geneva, Switzerland
| | - Burak Guzelturk
- X-ray Science Division, Argonne National Laboratory, Lemont, IL USA
| | - Benjamin L. Cotts
- Department of Materials Science and Engineering, Stanford University, Stanford, CA USA
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT USA
| | - Marc Zajac
- X-ray Science Division, Argonne National Laboratory, Lemont, IL USA
| | - Gabriele Rainò
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Maximilian Jansen
- Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Simon C. Boehme
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Maksym Yarema
- Chemistry and Materials Design Group, Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Ming-Fu Lin
- SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Michael Kozina
- SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Alexander Reid
- SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | | | - Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, Geneva, Switzerland
| | - Antonietta Guagliardi
- Istituto di Cristallografia & To.Sca.Lab, Consiglio Nazionale delle Ricerche, Como, Italy
| | - Maksym V. Kovalenko
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Vanessa Wood
- Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Aaron M. Lindenberg
- Department of Materials Science and Engineering, Stanford University, Stanford, CA USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA USA
- Department of Photon Science, Stanford University and SLAC National Accelerator Laboratory, Menlo Park, CA USA
| |
Collapse
|
8
|
Wu B, Wang A, Fu J, Zhang Y, Yang C, Gong Y, Jiang C, Long M, Zhou G, Yue S, Ma W, Liu X. Uncovering the mechanisms of efficient upconversion in two-dimensional perovskites with anti-Stokes shift up to 220 meV. SCIENCE ADVANCES 2023; 9:eadi9347. [PMID: 37774031 PMCID: PMC10541006 DOI: 10.1126/sciadv.adi9347] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 08/30/2023] [Indexed: 10/01/2023]
Abstract
Phonon-assisted photon upconversion holds great potential for numerous applications, e.g., optical refrigeration. However, traditional semiconductors face energy gain limitations due to thermal energy, typically achieving only ~25 milli-electron volts at room temperature. Here, we demonstrate that quasi-two-dimensional perovskites, with a soft hybrid organic-inorganic lattice, can efficiently upconvert photons with an anti-Stokes shift exceeding 200 milli-electron volts. By using microscopic transient absorption measurements and density functional theory calculations, we explicate that the giant energy gain stems from strong lattice fluctuation leading to a picosecond timescale transient band energy renormalization with a large energy variation of around ±180 milli-electron volts at room temperature. The motion of organic molecules drives the deformation of inorganic framework, providing energy and local states necessary for efficient upconversion within a time constant of around 1 ps. These results establish a deep understanding of perovskite-based photon upconversion and offer previously unknown insights into the development of various upconversion applications.
Collapse
Affiliation(s)
- Bo Wu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, P.R. China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Aocheng Wang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Jing Fu
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, P.R. China
| | - Yutong Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Cheng Yang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, P.R. China
| | - Yiyang Gong
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, P.R. China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Chuanxiu Jiang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Mingzhu Long
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, P.R. China
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, P.R. China
| | - Shuai Yue
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Wei Ma
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, P.R. China
| | - Xinfeng Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| |
Collapse
|
9
|
Wang H, Wang Q, Ning M, Li S, Xue R, Chen P, Li Z. Synthesis of centimeter-size two-dimensional hybrid perovskite single crystals with tunable, pure, and stable luminescence. RSC Adv 2023; 13:22886-22894. [PMID: 37520096 PMCID: PMC10377113 DOI: 10.1039/d3ra02816j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
The environment-friendly synthesis and property modulation of two-dimensional organic-inorganic halide perovskite (2D OHP) single crystals with large sizes and high quality are important for the fabrication of optoelectric devices. In this work, plate-like and centimeter-size (BA)2Pb(BrxI1-x)4 (BA = n-butylammonium, x: 0-1) single crystals with high crystallinity were synthesized via the cooling crystallization method in a mixed HX (X: I, Br) acid aqueous solution. The synthesized samples were single-phase with homogenously distributed Br and I ions. The lattice structure and bandgap of (BA)2Pb(BrxI1-x)4 were both finely tuned through halide alloying. Pure photoluminescence with unitary wavelength was obtained in the mixed-halide samples compared to those of monohalides (BA)2PbI4 and (BA)2PbBr4. This is attributed to the structural homogeneity of the alloyed crystals. Moreover, the prepared (BA)2Pb(BrxI1-x)4 samples showed higher photo and thermal stability for a long duration even with ion migration. This study will be an important reference for the fabrication and property modulation of 2D OHP-based light-emitting and other optoelectric devices.
Collapse
Affiliation(s)
- Haiyan Wang
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
- Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Qiaohe Wang
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Mengxin Ning
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Sen Li
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Renzhong Xue
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Peng Chen
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Zijiong Li
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| |
Collapse
|
10
|
Fu J, Ramesh S, Melvin Lim JW, Sum TC. Carriers, Quasi-particles, and Collective Excitations in Halide Perovskites. Chem Rev 2023. [PMID: 37276018 DOI: 10.1021/acs.chemrev.2c00843] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Halide perovskites (HPs) are potential game-changing materials for a broad spectrum of optoelectronic applications ranging from photovoltaics, light-emitting devices, lasers to radiation detectors, ferroelectrics, thermoelectrics, etc. Underpinning this spectacular expansion is their fascinating photophysics involving a complex interplay of carrier, lattice, and quasi-particle interactions spanning several temporal orders that give rise to their remarkable optical and electronic properties. Herein, we critically examine and distill their dynamical behavior, collective interactions, and underlying mechanisms in conjunction with the experimental approaches. This review aims to provide a unified photophysical picture fundamental to understanding the outstanding light-harvesting and light-emitting properties of HPs. The hotbed of carrier and quasi-particle interactions uncovered in HPs underscores the critical role of ultrafast spectroscopy and fundamental photophysics studies in advancing perovskite optoelectronics.
Collapse
Affiliation(s)
- Jianhui Fu
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Sankaran Ramesh
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Jia Wei Melvin Lim
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| |
Collapse
|
11
|
Yang L, Zhou H, Duan Y, Wu M, He K, Li Y, Xu D, Zou H, Yang S, Fang Z, Liu S, Liu Z. 25.24%-Efficiency FACsPbI 3 Perovskite Solar Cells Enabled by Intermolecular Esterification Reaction of DL-Carnitine Hydrochloride. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211545. [PMID: 36731421 DOI: 10.1002/adma.202211545] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Judicious tailoring of the interface between the SnO2 electron-transport layer and the perovskite buried surface plays a pivotal role in obtaining highly efficient and stable perovskite solar cells (PSCs). Herein, a DL-carnitine hydrochloride (DL) is incorporated into the perovskite/SnO2 interface to suppress the defect-states density. A DL-dimer is obtained at the interface by an intermolecular esterification reaction. For the SnO2 film, the Cl- in the DL-dimer can passivate oxygen vacancies (VO ) through electrostatic coupling, while the N in the DL-dimer can coordinate with the Sn4+ to passivate Sn-related defects. For the perovskite film, the DL-dimer can passivate FA+ defects via hydrogen bonding and Pb-related defects more efficiently than the DL monomer. Upon DL-dimer modification, the interfacial defects are effectively passivated and the quality of the resultant perovskite film is improved. As a result, the DL-treated device achieves a gratifying open-circuit voltage (VOC ) of 1.20 V and a champion power conversion efficiency (PCE) of 25.24%, which is a record value among all the reported FACsPbI3 PSCs to date. In addition, the unencapsulated devices exhibit a charming stability, sustaining 99.20% and 90.00% of their initial PCEs after aging in air for 1200 h and continuously operating at the maximum power point tracking for 500 h, respectively.
Collapse
Affiliation(s)
- Lu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Hui Zhou
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yuwei Duan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Meizi Wu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Kun He
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yong Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Dongfang Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Hong Zou
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shaoming Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Zhimin Fang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shengzhong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
- Dalian National Laboratory for Clean Energy iChEM, Dalian Institute of Chemical Physics Chinese Academy of Sciences, Dalian, 116023, China
| | - Zhike Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| |
Collapse
|
12
|
Zhang X, Kang J, Wei SH. Defect modeling and control in structurally and compositionally complex materials. NATURE COMPUTATIONAL SCIENCE 2023; 3:210-220. [PMID: 38177885 DOI: 10.1038/s43588-023-00403-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 01/16/2023] [Indexed: 01/06/2024]
Abstract
Conventional computational approaches for modeling defects face difficulties when applied to complex materials, mainly due to the vast configurational space of defects. In this Perspective, we discuss the challenges in calculating defect properties in complex materials, review recent advances in computational techniques and showcase new mechanistic insights developed from these methods. We further discuss the remaining challenges in improving the accuracy and efficiency of defect modeling in complex materials, and provide an outlook on potential research directions.
Collapse
Affiliation(s)
- Xie Zhang
- Beijing Computational Science Research Center, Beijing, China
| | - Jun Kang
- Beijing Computational Science Research Center, Beijing, China
| | - Su-Huai Wei
- Beijing Computational Science Research Center, Beijing, China.
| |
Collapse
|
13
|
Phonon-driven intra-exciton Rabi oscillations in CsPbBr 3 halide perovskites. Nat Commun 2023; 14:1047. [PMID: 36828818 PMCID: PMC9958027 DOI: 10.1038/s41467-023-36654-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 02/10/2023] [Indexed: 02/26/2023] Open
Abstract
Coupling electromagnetic radiation with matter, e.g., by resonant light fields in external optical cavities, is highly promising for tailoring the optoelectronic properties of functional materials on the nanoscale. Here, we demonstrate that even internal fields induced by coherent lattice motions can be used to control the transient excitonic optical response in CsPbBr3 halide perovskite crystals. Upon resonant photoexcitation, two-dimensional electronic spectroscopy reveals an excitonic peak structure oscillating persistently with a 100-fs period for up to ~2 ps which does not match the frequency of any phonon modes of the crystals. Only at later times, beyond 2 ps, two low-frequency phonons of the lead-bromide lattice dominate the dynamics. We rationalize these findings by an unusual exciton-phonon coupling inducing off-resonant 100-fs Rabi oscillations between 1s and 2p excitons driven by the low-frequency phonons. As such, prevailing models for the electron-phonon coupling in halide perovskites are insufficient to explain these results. We propose the coupling of characteristic low-frequency phonon fields to intra-excitonic transitions in halide perovskites as the key to control the anharmonic response of these materials in order to establish new routes for enhancing their optoelectronic properties.
Collapse
|
14
|
Seiler H, Zahn D, Taylor VCA, Bodnarchuk MI, Windsor YW, Kovalenko MV, Ernstorfer R. Direct Observation of Ultrafast Lattice Distortions during Exciton-Polaron Formation in Lead Halide Perovskite Nanocrystals. ACS NANO 2023; 17:1979-1988. [PMID: 36651873 PMCID: PMC9933605 DOI: 10.1021/acsnano.2c06727] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 01/10/2023] [Indexed: 05/31/2023]
Abstract
The microscopic origin of slow hot-carrier cooling in lead halide perovskites remains debated and has direct implications for applications. Slow hot-carrier cooling of several picoseconds has been attributed to either polaron formation or a hot-phonon bottleneck effect at high excited carrier densities (>1018 cm-3). These effects cannot be unambiguously disentangled with optical experiments alone. However, they can be distinguished by direct observations of ultrafast lattice dynamics, as these effects are expected to create qualitatively distinct fingerprints. To this end, we employ femtosecond electron diffraction and directly measure the sub-picosecond lattice dynamics of weakly confined CsPbBr3 nanocrystals following above-gap photoexcitation. While we do not observe signatures of a hot-phonon bottleneck lasting several picoseconds, the data reveal a light-induced structural distortion appearing on a time scale varying between 380 and 1200 fs depending on the excitation fluence. We attribute these dynamics to the effect of exciton-polarons on the lattice and the slower dynamics at high fluences to slower sub-picosecond hot-carrier cooling, which slows down the establishment of the exciton-polaron population. Further analysis and simulations show that the distortion is consistent with motions of the [PbBr3]- octahedral ionic cage, and closest agreement with the data is obtained for Pb-Br bond lengthening. Our work demonstrates how direct studies of lattice dynamics on the sub-picosecond time scale can discriminate between competing scenarios proposed in the literature to explain the origin of slow hot-carrier cooling in lead halide perovskites.
Collapse
Affiliation(s)
- Hélène Seiler
- Fritz
Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
- Physics
Department, Free University of Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Daniela Zahn
- Fritz
Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Victoria C. A. Taylor
- Fritz
Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Maryna I. Bodnarchuk
- Laboratory
for Thin Films and Photovoltaics, Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Yoav William Windsor
- Fritz
Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
- Institut
für Optik und Atomare Physik, Technische
Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Maksym V. Kovalenko
- Laboratory
for Thin Films and Photovoltaics, Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Ralph Ernstorfer
- Fritz
Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
- Institut
für Optik und Atomare Physik, Technische
Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| |
Collapse
|
15
|
Liu Y, Liu CH, Debnath T, Wang Y, Pohl D, Besteiro LV, Meira DM, Huang S, Yang F, Rellinghaus B, Chaker M, Perepichka DF, Ma D. Silver nanoparticle enhanced metal-organic matrix with interface-engineering for efficient photocatalytic hydrogen evolution. Nat Commun 2023; 14:541. [PMID: 36725862 PMCID: PMC9892045 DOI: 10.1038/s41467-023-35981-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 01/10/2023] [Indexed: 02/03/2023] Open
Abstract
Integrating plasmonic nanoparticles into the photoactive metal-organic matrix is highly desirable due to the plasmonic near field enhancement, complementary light absorption, and accelerated separation of photogenerated charge carriers at the junction interface. The construction of a well-defined, intimate interface is vital for efficient charge carrier separation, however, it remains a challenge in synthesis. Here we synthesize a junction bearing intimate interface, composed of plasmonic Ag nanoparticles and matrix with silver node via a facile one-step approach. The plasmonic effect of Ag nanoparticles on the matrix is visualized through electron energy loss mapping. Moreover, charge carrier transfer from the plasmonic nanoparticles to the matrix is verified through ultrafast transient absorption spectroscopy and in-situ photoelectron spectroscopy. The system delivers highly efficient visible-light photocatalytic H2 generation, surpassing most reported metal-organic framework-based photocatalytic systems. This work sheds light on effective electronic and energy bridging between plasmonic nanoparticles and organic semiconductors.
Collapse
Affiliation(s)
- Yannan Liu
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifque (INRS) 1650 Boul. Lionel-Boulet, Varennes, QC J3X 1P7 Canada ,grid.4488.00000 0001 2111 7257Present Address: Center for Advancing Electronics Dresden (Cfaed), Technische Universität Dresden, 01062 Dresden, Germany
| | - Cheng-Hao Liu
- grid.14709.3b0000 0004 1936 8649Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 0B8 Canada
| | - Tushar Debnath
- grid.5252.00000 0004 1936 973XChair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics, Ludwig-Maximilians-University, Königinstr. 10, 80539 München, Germany
| | - Yong Wang
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifque (INRS) 1650 Boul. Lionel-Boulet, Varennes, QC J3X 1P7 Canada
| | - Darius Pohl
- Present Address: Dresden Center for Nanoanalysis (DCN), 01062 Dresden, Germany ,grid.4488.00000 0001 2111 7257Present Address: Center for Advancing Electronics Dresden (Cfaed), Technische Universität Dresden, 01062 Dresden, Germany
| | - Lucas V. Besteiro
- grid.6312.60000 0001 2097 6738CINBIO, Universidade de Vigo, 36310 Vigo, Spain
| | - Debora Motta Meira
- grid.187073.a0000 0001 1939 4845CLS@APS sector 20, Advanced Photon Source, Argonne National Laboratory, 60439 Lemont, IL USA ,grid.423571.60000 0004 0443 7584Canadian Light Source Inc., Saskatoon, SK S7N 2V3 Canada
| | - Shengyun Huang
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifque (INRS) 1650 Boul. Lionel-Boulet, Varennes, QC J3X 1P7 Canada
| | - Fan Yang
- grid.168010.e0000000419368956Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305 USA
| | - Bernd Rellinghaus
- Present Address: Dresden Center for Nanoanalysis (DCN), 01062 Dresden, Germany ,grid.4488.00000 0001 2111 7257Present Address: Center for Advancing Electronics Dresden (Cfaed), Technische Universität Dresden, 01062 Dresden, Germany
| | - Mohamed Chaker
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifque (INRS) 1650 Boul. Lionel-Boulet, Varennes, QC J3X 1P7 Canada
| | - Dmytro F. Perepichka
- grid.14709.3b0000 0004 1936 8649Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 0B8 Canada
| | - Dongling Ma
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifque (INRS) 1650 Boul. Lionel-Boulet, Varennes, QC J3X 1P7 Canada
| |
Collapse
|
16
|
Das A, Debnath T. Water-Triggered Chemical Transformation of Perovskite Nanocrystals. Chemistry 2023; 29:e202202475. [PMID: 36259609 DOI: 10.1002/chem.202202475] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Indexed: 12/03/2022]
Abstract
Recently emerged lead-halide perovskite nanocrystals (PNCs) are promising optoelectronic material due to their easy solution processability, wide range of color tunability, as well as very high photoluminescence quantum yield. Despite their significant success in lab-scale optoelectronic applications, the long-term stability becomes the main issue, hindering them towards commercialization. The highly ionic nature of such lead-halide structure makes them extremely unstable in water and air. But a very few groups have taken the advantage of such nature of the crystal structure for water-triggered chemical transformation towards shape, composition, and morphology controlled stable and bright PNCs, which are otherwise difficult to obtain by typical direct approach. Furthermore, using polymer as an encapsulating layer for the PNCs, water-soluble stable PNCs have been prepared. In this review, the recent progress on the water-hexane interface chemistry towards chemical transformation to produce several PNCs is described. Such method not only ensure to yield several shape-controlled perovskites nanocrystals, but also formation of perovskites in aqueous phase that show promising application towards bio-imaging.
Collapse
Affiliation(s)
- Avik Das
- Centre for Nanotechnology, Indian Institute of Technology Guwahati (IIT G), Guwahati, Assam, 781039, India
| | - Tushar Debnath
- Centre for Nanotechnology, Indian Institute of Technology Guwahati (IIT G), Guwahati, Assam, 781039, India
| |
Collapse
|
17
|
Scalon L, Freitas FS, Marques FDC, Nogueira AF. Tiny spots to light the future: advances in synthesis, properties, and application of perovskite nanocrystals in solar cells. NANOSCALE 2023; 15:907-941. [PMID: 36629010 DOI: 10.1039/d2nr05043a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Perovskites are in the hotspot of material science and technology. Outstanding properties have been discovered, fundamental mechanisms of defect formation and degradation elucidated, and applications in a wide variety of optoelectronic devices demonstrated. Advances through adjusting the bulk-perovskite composition, as well as the integration of layered and nanostructured perovskites in the devices, allowed improvement in performance and stability. Recently, efforts have been devoted to investigating the effects of quantum confinement in perovskite nanocrystals (PNCs) aiming to fabricate optoelectronic devices based solely on these nanoparticles. In general, the applications are focused on light-emitting diodes, especially because of the high color purity and high fluorescence quantum yield obtained in PNCs. Likewise, they present important characteristics featured for photovoltaic applications, highlighting the possibility of stabilizing photoactive phases that are unstable in their bulk analog, the fine control of the bandgap through size change, low defect density, and compatibility with large-scale deposition techniques. Despite the progress made in the last years towards the improvement in the performance and stability of PNCs-based solar cells, their efficiency is still much lower than that obtained with bulk perovskite, and discussions about upscaling of this technology are scarce. In light of this, we address in this review recent routes towards efficiency improvement and the up-scaling of PNC solar cells, emphasizing synthesis management and strategies for solar cell fabrication.
Collapse
Affiliation(s)
- Lucas Scalon
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil.
| | - Flavio Santos Freitas
- Centro Federal de Educação Tecnológica de Minas Gerais, Minas Gerais 30421-169, Brazil
| | | | - Ana Flávia Nogueira
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil.
| |
Collapse
|
18
|
Manna M, Pal S, Goswami T, Bhandari S, Debnath T. Halide-Driven Halogen-Hydrogen Bonding versus Chelation in Perovskite Nanocrystals: A Concept of Charge Transfer Bridging. J Phys Chem Lett 2023; 14:354-362. [PMID: 36606726 DOI: 10.1021/acs.jpclett.2c03738] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The choice of surface functionalized ligands to encapsulate semiconductor nanocrystals (NCs) is important for tailoring their optoelectronic properties. We use a small bidentate 8-hydroxyquinoline (HQ) molecule to surface functionalize CsPbX3 perovskite NCs (X = Cl, Br, I), along with traditional long-chain monodentate ligands. Our experimental results using optical and ultrafast spectroscopy depict a halogen-hydrogen bonding formation in the HQ functionalized CsPbCl3 and CsPbBr3 NCs, which act as a charge transfer (CT) bridging for the interfacial hole transfer from the NCs to the HQ molecule as fast as 540 fs. In contrast, weak chelation is observed for HQ-coupled CsPbI3 NCs without an active CT process. We explain two distinct surface coupling mechanisms via the polarizability of halides and larger PbI64- octahedral cage size. Control of two contrasting halide-dependent surface coupling phenomena of a small molecule that further regulate the CT process may have significant implications in their development in optoelectronics.
Collapse
Affiliation(s)
- Mihir Manna
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
| | - Srimanta Pal
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
| | - Tanmay Goswami
- Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
| | - Satyapriya Bhandari
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal734013, India
| | - Tushar Debnath
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
| |
Collapse
|
19
|
Barfüßer A, Rieger S, Dey A, Tosun A, Akkerman QA, Debnath T, Feldmann J. Confined Excitons in Spherical-Like Halide Perovskite Quantum Dots. NANO LETTERS 2022; 22:8810-8817. [PMID: 36251337 DOI: 10.1021/acs.nanolett.2c02223] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Quantum dots (QDs) offer unique physical properties and novel application possibilities like single-photon emitters for quantum technologies. While strongly confined III-V and II-VI QDs have been studied extensively, their complex valence band structure often limits clear observations of individual transitions. In recently emerged lead-halide perovskites, band degeneracies are absent around the bandgap reducing the complexity of optical spectra. We show that for spherical-like CsPbBr3 QDs with diameters >6 nm, excitons confine with respect to their center-of-mass motion leading to well-pronounced resonances in their absorption spectra. Optical pumping of the lowest-confined exciton with femtosecond laser pulses not only bleaches all excitons but also reveals a series of distinct induced absorption resonances which we attribute to exciton-to-biexciton transitions and are red-shifted by the biexciton binding energy (∼40 meV). The temporal dynamics of the bleached excitons further support our exciton confinement model. Our study provides the first insight into confined excitons in CsPbBr3 QDs and gives a detailed understanding of their linear and nonlinear optical spectra.
Collapse
Affiliation(s)
- Anja Barfüßer
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Sebastian Rieger
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Amrita Dey
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Ahmet Tosun
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Tushar Debnath
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| |
Collapse
|
20
|
Li X, Wang A, Chen H, Tao W, Chen Z, Zhang C, Li Y, Zhang Y, Shang H, Weng YX, Zhao J, Zhu H. Ultrafast Spontaneous Localization of a Jahn-Teller Exciton Polaron in Two-Dimensional Semiconducting CrI 3 by Symmetry Breaking. NANO LETTERS 2022; 22:8755-8762. [PMID: 36305523 DOI: 10.1021/acs.nanolett.2c03689] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The excited state species and properties in low-dimensional semiconductors can be completely redefined by electron-lattice coupling or a polaronic effect. Here, by combining ultrafast broadband pump-probe spectroscopy and first-principles GW and Bethe-Salpeter equation calculations, we show semiconducting CrI3 as a prototypical 2D polaronic system with characteristic Jahn-Teller exciton polaron induced by symmetry breaking. A photogenerated electron and hole in CrI3 localize spontaneously in ∼0.9 ps and pair geminately to a Jahn-Teller exciton polaron with elongated Cr-I octahedra, large binding energy, and an unprecedentedly small exciton-exciton annihilation rate constant (∼10-20 cm3 s-1). Coherent phonon dynamics indicates the localization is mainly triggered by the coherent nuclear vibration of the I-Cr-I out-of-plane stretch mode at 128.5 ± 0.1 cm-1. The excited state Jahn-Teller exciton polaron in CrI3 broadens the realm of 2D polaron systems and reveals the decisive role of coupled electron-lattice motion on excited state properties and exciton physics in 2D semiconductors.
Collapse
Affiliation(s)
- Xufeng Li
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Aolei Wang
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and ICQD/Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Hailong Chen
- Beijing National Laboratory for Condensed Matter Physics, The Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing100190, China
| | - Weijian Tao
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Zeng Chen
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Chi Zhang
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Yujie Li
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Yiran Zhang
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Honghui Shang
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and ICQD/Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Yu-Xiang Weng
- Beijing National Laboratory for Condensed Matter Physics, The Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing100190, China
| | - Jin Zhao
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and ICQD/Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Haiming Zhu
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, Zhejiang311200, China
| |
Collapse
|
21
|
Han Y, Liang W, Lin X, Li Y, Sun F, Zhang F, Sercel PC, Wu K. Lattice distortion inducing exciton splitting and coherent quantum beating in CsPbI 3 perovskite quantum dots. NATURE MATERIALS 2022; 21:1282-1289. [PMID: 36075966 DOI: 10.1038/s41563-022-01349-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Anisotropic exchange splitting in semiconductor quantum dots results in bright-exciton fine-structure splitting important for quantum information processing. Direct measurement of fine-structure splitting usually requires single/few quantum dots at liquid-helium temperature because of its sensitivity to quantum dot size and shape, whereas measuring and controlling fine-structure splitting at an ensemble level seem to be impossible unless all the dots are made to be nearly identical. Here we report strong bright-exciton fine-structure splitting up to 1.6 meV in solution-processed CsPbI3 perovskite quantum dots, manifested as quantum beats in ensemble-level transient absorption at liquid-nitrogen to room temperature. The splitting is robust to quantum dot size and shape heterogeneity, and increases with decreasing temperature, pointing towards a mechanism associated with orthorhombic distortion of the perovskite lattice. Effective-mass-approximation calculations reveal an intrinsic 'fine-structure gap' that agrees well with the observed fine-structure splitting. This gap stems from an avoided crossing of bright excitons confined in orthorhombically distorted quantum dots that are bounded by the pseudocubic {100} family of planes.
Collapse
Affiliation(s)
- Yaoyao Han
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wenfei Liang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xuyang Lin
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yulu Li
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Fengke Sun
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Fan Zhang
- University of Chinese Academy of Sciences, Beijing, China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Peter C Sercel
- Center for Hybrid Organic Inorganic Semiconductors for Energy, Golden, CO, USA.
| | - Kaifeng Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
| |
Collapse
|
22
|
Tao W, Zhu L, Li K, Chen C, Chen Y, Li Y, Li X, Tang J, Shang H, Zhu H. Coupled Electronic and Anharmonic Structural Dynamics for Carrier Self-Trapping in Photovoltaic Antimony Chalcogenides. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202154. [PMID: 35754307 PMCID: PMC9443444 DOI: 10.1002/advs.202202154] [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: 04/13/2022] [Revised: 05/20/2022] [Indexed: 06/15/2023]
Abstract
V-VI antimony chalcogenide semiconductors have shown exciting potentials for thin film photovoltaic applications. However, their solar cell efficiencies are strongly hampered by anomalously large voltage loss (>0.6 V), whose origin remains controversial so far. Herein, by combining ultrafast pump-probe spectroscopy and density functional theory (DFT) calculation, the coupled electronic and structural dynamics leading to excited state self-trapping in antimony chalcogenides with atomic level characterizations is reported. The electronic dynamics in Sb2 Se3 indicates a ≈20 ps barrierless intrinsic self-trapping, with electron localization and accompanied lattice distortion given by DFT calculations. Furthermore, impulsive vibrational coherences unveil key SbSe vibrational modes and their real-time interplay that drive initial excited state relaxation and energy dissipation toward stabilized small polaron through electron-phonon and subsequent phonon-phonon coupling. This study's findings provide conclusive evidence of carrier self-trapping arising from intrinsic lattice anharmonicity and polaronic effect in antimony chalcogenides and a new understanding on the coupled electronic and structural dynamics for redefining excited state properties in soft semiconductor materials.
Collapse
Affiliation(s)
- Weijian Tao
- State Key Laboratory of Modern Optical InstrumentationKey Laboratory of Excited‐State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhouZhejiang310027China
| | - Leilei Zhu
- State Key Laboratory of Computer ArchitectureInstitute of Computing TechnologyChinese Academy of SciencesBeijing100190China
| | - Kanghua Li
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic InformationHuazhong University of Science and TechnologyHubei430074China
| | - Chao Chen
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic InformationHuazhong University of Science and TechnologyHubei430074China
| | - Yuzhong Chen
- State Key Laboratory of Modern Optical InstrumentationKey Laboratory of Excited‐State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhouZhejiang310027China
| | - Yujie Li
- State Key Laboratory of Modern Optical InstrumentationKey Laboratory of Excited‐State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhouZhejiang310027China
| | - Xufeng Li
- State Key Laboratory of Modern Optical InstrumentationKey Laboratory of Excited‐State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhouZhejiang310027China
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic InformationHuazhong University of Science and TechnologyHubei430074China
| | - Honghui Shang
- State Key Laboratory of Computer ArchitectureInstitute of Computing TechnologyChinese Academy of SciencesBeijing100190China
| | - Haiming Zhu
- State Key Laboratory of Modern Optical InstrumentationKey Laboratory of Excited‐State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhouZhejiang310027China
- Zhejiang University‐Hangzhou Global Scientific and Technological Innovation CenterHangzhou310014China
| |
Collapse
|
23
|
Zhang W, Kong J, Li Y, Kuang Z, Wang H, Zhou M. Coherent vibrational dynamics of Au 144(SR) 60 nanoclusters. Chem Sci 2022; 13:8124-8130. [PMID: 35919416 PMCID: PMC9278113 DOI: 10.1039/d2sc02246j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/16/2022] [Indexed: 11/26/2022] Open
Abstract
The coherent vibrational dynamics of gold nanoclusters (NCs) provides important information on the coupling between vibrations and electrons as well as their mechanical properties, which is critical for understanding the evolution from a metallic state to a molecular state with diminishing size. Coherent vibrations have been widely explored in small-sized atomically precise gold NCs, while it remains a challenge to observe them in large-sized gold NCs. In this work, we report the coherent vibrational dynamics of atomically precise Au144(SR)60 NCs via temperature-dependent femtosecond transient absorption (TA) spectroscopy. The population dynamics of Au144(SR)60 consists of three relaxation processes: internal conversion, core-shell charge transfer and relaxation to the ground state. After removing the population dynamics from the TA kinetics, fast Fourier transform analysis on the residual oscillation reveals distinct vibrational modes at 1.5 THz (50 cm-1) and 2 THz (67 cm-1), which arise from the wavepacket motions along the ground-state and excited-state potential energy surfaces (PES), respectively. These results are helpful for understanding the physical properties of gold nanostructures with a threshold size that lies in between those of molecular-like NCs and metallic-state nanoparticles.
Collapse
Affiliation(s)
- Wei Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China Hefei Anhui 230026 China
| | - Jie Kong
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China Hefei Anhui 230026 China
| | - Yingwei Li
- Department of Chemistry and Chemical Biology, Harvard University 12 Oxford Street Cambridge Massachusetts 02138 USA
| | - Zhuoran Kuang
- School of Science, Beijing University of Posts and Telecommunications (BUPT) Beijing 100876 P. R. China
| | - He Wang
- Department of Physics, University of Miami Coral Gables Florida 33146 USA
| | - Meng Zhou
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China Hefei Anhui 230026 China
- Department of Physics, University of Miami Coral Gables Florida 33146 USA
| |
Collapse
|
24
|
Li Z, Yan Y, Song MS, Xin JY, Wang HY, Wang H, Wang Y. Exciton-Phonon Coupling of Chiral One-Dimensional Lead-Free Hybrid Metal Halides at Room Temperature. J Phys Chem Lett 2022; 13:4073-4081. [PMID: 35499477 DOI: 10.1021/acs.jpclett.2c00698] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The interaction between organic cations and inorganic metal halide octahedral units strongly affects the properties of organic-inorganic hybrid metal halides. The "soft" property of the lattice provides the possibility of its strong exciton-phonon interaction. Here we report one-dimensional (1D) lead-free chiral organic-inorganic hybrid metal halide single crystals of (R/S)-methylbenzylamine bismuth iodide (R/S-MBA)2Bi2I8, which exhibits a high level of octahedral bond distortion. The introduction of chiral amines leads to a strong chiroptical response in the range of 200-600 nm. The strong exciton-phonon coupling can be observed through the coherent oscillation spectrum of transient absorption dynamics at room temperature. The coherent phonon oscillation frequencies are ∼97 and ∼130 cm-1, corresponding to the symmetrical stretching or bending of the Bi-I octahedron. Our work provides new insights for the study of exciton-phonon coupling in 1D chiral hybrid metal halides.
Collapse
Affiliation(s)
- Zhen Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yan Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Mu-Sen Song
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Jia-Yu Xin
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Hai-Yu Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Hai Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yu Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| |
Collapse
|
25
|
Wu L, Wang Y, Kurashvili M, Dey A, Cao M, Döblinger M, Zhang Q, Feldmann J, Huang H, Debnath T. Interfacial Manganese‐Doping in CsPbBr
3
Nanoplatelets by Employing a Molecular Shuttle. Angew Chem Int Ed Engl 2022; 61:e202115852. [PMID: 34995399 PMCID: PMC9305410 DOI: 10.1002/anie.202115852] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Indexed: 11/29/2022]
Abstract
Mn‐doping in cesium lead halide perovskite nanoplatelets (NPls) is of particular importance where strong quantum confinement plays a significant role towards the exciton–dopant coupling. In this work, we report an immiscible bi‐phasic strategy for post‐synthetic Mn‐doping of CsPbX3 (X=Br, Cl) NPls. A systematic study shows that electron‐donating oleylamine acts as a shuttle ligand to transport MnX2 through the water–hexane interface and deliver it to the NPls. The halide anion also plays an essential role in maintaining an appropriate radius of Mn2+ and thus fulfilling the octahedral factor required for the formation of perovskite crystals. By varying the thickness of parent NPls, we can tune the dopant incorporation and, consequently, the exciton‐to‐dopant energy transfer process in doped NPls. Time‐resolved optical measurements offer a detailed insight into the exciton‐to‐dopant energy transfer process. This new approach for post‐synthetic cation doping paves a way towards exploring the cation exchange process in several other halide perovskites at the polar–nonpolar interface.
Collapse
Affiliation(s)
- Linzhong Wu
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
- Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Yiou Wang
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
| | - Mariam Kurashvili
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
| | - Amrita Dey
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
| | - Muhan Cao
- Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Markus Döblinger
- Department of Chemistry Ludwig-Maximilians-Universität München Butenandtstrasse 5–13 (E) 81377 München Germany
| | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
| | - He Huang
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
- School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215006 P. R. China
| | - Tushar Debnath
- Chair for Photonics and Optoelectronics Nano-Institute Munich Department of Physics Ludwig-Maximilians-Universität München Königinstr. 10 80539 München Germany
| |
Collapse
|
26
|
Tao W, Zhang Y, Zhu H. Dynamic Exciton Polaron in Two-Dimensional Lead Halide Perovskites and Implications for Optoelectronic Applications. Acc Chem Res 2022; 55:345-353. [PMID: 35043614 DOI: 10.1021/acs.accounts.1c00626] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ConspectusThe past few years have witnessed an exciting revival of the research interest in two-dimensional (2D) lead halide perovskites. The renaissance is strongly motivated by the great success of their three-dimensional (3D) counterparts in optoelectronic applications. Different from 3D lead halide perovskites where free carriers are generated upon photoexcitation, 2D lead halide perovskites experience weaker dielectric screening and stronger quantum confinement effects. Therefore, strongly bound excitons with binding energy of up to a few hundreds of meV are considered to be the main excited-state species responsible for optoelectronic processes in 2D perovskites. In addition to strong excitonic effects, polaronic effects are also inherent in the soft and anharmonic lattice of lead halide perovskites, and polaronic structural relaxation is found to strongly renormalize carrier excited-state behaviors. For example, ferroelectric large polaron formation and liquid-like solvation of band edge carriers are proposed to account for the exceptional properties of 3D lead halide perovskites. As for 2D lead halide perovskites, polaronic characteristics have also been observed in exciton spectral characters, but how the interplay between excitonic effect and polaronic effect redefines the nature of exciton polarons and their excited-state behaviors still remains largely unexplored.In this Account, we discuss our recent experimental findings about the excited-state properties of exciton polarons in 2D lead halide perovskites. We begin our discussion by introducing a conventional view of strongly bound excitons in 2D lead halide perovskites with large exciton binding energy, which is typically estimated from steady-state absorption spectra. However, owing to the soft and anharmonic lattice, excitons in 2D lead halide perovskites exhibit significant polaronic characters and exist as exciton polarons. It is still unclear how polaronic effects would affect the exciton properties in 2D lead halide perovskites, especially in their excited-state dynamics. By probing exchange interaction, we found that both intra- and inter-exciton Coulomb interaction strengths are substantially weakened by the polaronic screening effect, which is manifested as (1) a counterintuitively longer exciton spin lifetime by almost an order of magnitude or a smaller intraexcitonic interaction strength with temperature increasing from 80 to 340 K and (2) an order of magnitude smaller interexcitonic interaction strength compared to another prototypical 2D semiconductor named transition-metal dichalcogenides (TMDCs) with a comparable steady-state exciton binding energy. We further discuss the interplay between the long- and short-range exciton-phonon interaction and conclude that the exciton-phonon interaction strength is in an intermediate regime and the exciton polaron is momentarily trapped in 2D perovskites, that is, a dynamic exciton polaron.Finally, we highlight prospective opportunities with ligand and cation engineering to regulate the exciton-phonon interaction and exciton polaron properties in 2D perovskites, which have strong implications toward future rational design for 2D perovskite-based efficient photovoltaics or light-emitting devices with high color purity.
Collapse
Affiliation(s)
- Weijian Tao
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Yao Zhang
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Haiming Zhu
- State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 310014, P. R. China
| |
Collapse
|
27
|
Debnath T, Wu L, Wang Y, Kurashvili M, Dey A, Cao M, Döblinger M, Zhang Q, Feldmann J, Huang H. Interfacial Manganese‐doping in CsPbBr3 Nanoplatelets by Employing a Molecular Shuttle. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tushar Debnath
- Ludwig-Maximilians-Universitat Munchen Physics Chair for Photonics and OptoelectronicsNano-Institute MünchenLudwig-Maximilians-Universität MünchenKöniginstr. 10 80539 Munich GERMANY
| | - Linzhong Wu
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute München 80539 Munich GERMANY
| | - Yiou Wang
- Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute München 80539 Munich GERMANY
| | - Mariam Kurashvili
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute München 8-539 Munich GERMANY
| | - Amrita Dey
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute München 80539 Munich GERMANY
| | - Muhan Cao
- Soochow University Institute of Functional Nano & Soft Materials (FUNSOM) 199 Ren’ai Road 215123 Suzhou CHINA
| | - Markus Döblinger
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Chemistry Butenandtstrasse 5–13 (E) 81377 Munich GERMANY
| | - Qiao Zhang
- Soochow University Institute of Functional Nano & Soft Materials (FUNSOM) 199 Ren’ai Road 215123 Suzhou CHINA
| | - Jochen Feldmann
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute Munich 80539 Munich GERMANY
| | - He Huang
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen Department of Physics Königinstr. 10Nano-Institute Munich 80539 Munich GERMANY
| |
Collapse
|
28
|
Iaru CM, Brodu A, van Hoof NJJ, Ter Huurne SET, Buhot J, Montanarella F, Buhbut S, Christianen PCM, Vanmaekelbergh D, de Mello Donega C, Rivas JG, Koenraad PM, Silov AY. Fröhlich interaction dominated by a single phonon mode in CsPbBr 3. Nat Commun 2021; 12:5844. [PMID: 34615880 PMCID: PMC8494801 DOI: 10.1038/s41467-021-26192-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 09/17/2021] [Indexed: 12/02/2022] Open
Abstract
The excellent optoelectronic performance of lead halide perovskites has generated great interest in their fundamental properties. The polar nature of the perovskite lattice means that electron-lattice coupling is governed by the Fröhlich interaction. Still, considerable ambiguity exists regarding the phonon modes that participate in this crucial mechanism. Here, we use multiphonon Raman scattering and THz time-domain spectroscopy to investigate Fröhlich coupling in CsPbBr3. We identify a longitudinal optical phonon mode that dominates the interaction, and surmise that this mode effectively defines exciton-phonon scattering in CsPbBr3, and possibly similar materials. It is additionally revealed that the observed strength of the Fröhlich interaction is significantly higher than the expected intrinsic value for CsPbBr3, and is likely enhanced by carrier localization in the colloidal perovskite nanocrystals. Our experiments also unearthed a dipole-related dielectric relaxation mechanism which may impact transport properties. Electron-phonon interaction is essential for understanding electronic and optical properties of lead halide perovskites. Here, using multiphonon Raman scattering and THz time-domain spectroscopy, the authors characterize the full phonon spectrum of CsPbBr3 and identify a single phonon mode that dominates electron-phonon scattering.
Collapse
Affiliation(s)
- Claudiu M Iaru
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
| | - Annalisa Brodu
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3508 TA, Utrecht, The Netherlands
| | - Niels J J van Hoof
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Stan E T Ter Huurne
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Jonathan Buhot
- HH Wills Laboratory, University of Bristol, Bristol, BS8 1TL, UK.,High Field Magnet Laboratory (HFML - EMFL), Radboud University, 6525 ED, Nijmegen, The Netherlands
| | - Federico Montanarella
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3508 TA, Utrecht, The Netherlands
| | - Sophia Buhbut
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3508 TA, Utrecht, The Netherlands
| | - Peter C M Christianen
- High Field Magnet Laboratory (HFML - EMFL), Radboud University, 6525 ED, Nijmegen, The Netherlands
| | - Daniël Vanmaekelbergh
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3508 TA, Utrecht, The Netherlands
| | - Celso de Mello Donega
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3508 TA, Utrecht, The Netherlands
| | - Jaime Gòmez Rivas
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Paul M Koenraad
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Andrei Yu Silov
- Department of Applied Physics and Institute for Photonic Integration, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
| |
Collapse
|
29
|
Rieger S, Fürmann T, Stolarczyk JK, Feldmann J. Optically Induced Coherent Phonons in Bismuth Oxyiodide (BiOI) Nanoplatelets. NANO LETTERS 2021; 21:7887-7893. [PMID: 34191527 DOI: 10.1021/acs.nanolett.1c00530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Bismuth oxyiodide (BiOI) is a promising material for photocatalysis combining intriguing optical and structural properties. We show that excitation by a femtosecond laser pulse creates coherent phonons inducing a time-variant oscillating modulation of the optical density. We find that the two underlying frequencies originate from lattice vibrations along the [001] crystallographic axis, the stacking direction of oppositely charged layers in BiOI. This is consistent with a subpicosecond charge separation driven by a built-in dipolar field. This partially screens the field, launching coherent phonons. Further, we determine the two major dephasing mechanisms that lead to the loss of vibronic coherence: (i) the anharmonic decay of an optical phonon into two acoustic phonons and (ii) phonon-carrier scattering. Our results provide a direct demonstration of the presence of an electric field in BiOI along the [001] axis and show its role in efficient charge separation that is crucial for photocatalytic applications of BiOI.
Collapse
Affiliation(s)
- Sebastian Rieger
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539 Munich, Germany
| | - Tim Fürmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539 Munich, Germany
| | - Jacek K Stolarczyk
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539 Munich, Germany
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539 Munich, Germany
| |
Collapse
|