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Muzzillo CP, Ciobanu CV, Moore DT. High-entropy alloy screening for halide perovskites. MATERIALS HORIZONS 2024; 11:3662-3694. [PMID: 38767287 DOI: 10.1039/d4mh00464g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
As the concept of high-entropy alloying (HEA) extends beyond metals, new materials screening methods are needed. Halide perovskites (HP) are a prime case study because greater stability is needed for photovoltaics applications, and there are 322 experimentally observed HP end-members, which leads to more than 1057 potential alloys. We screen HEAHP by first calculating the configurational entropy of 106 equimolar alloys with experimentally observed end-members. To estimate enthalpy at low computational cost, we turn to the delta-lattice parameter approach, a well-known method for predicting III-V alloy miscibility. To generalize the approach for non-cubic crystals, we introduce the parameter of unit cell volume coefficient of variation (UCV), which does a good job of predicting the experimental HP miscibility data. We use plots of entropy stabilization versus UCV to screen promising alloys and identify 102 HEAHP of interest.
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Affiliation(s)
| | | | - David T Moore
- National Renewable Energy Laboratory, Golden, CO, USA.
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2
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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; 36: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.
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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
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3
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Zuri S, Shapiro A, Kronik L, Lifshitz E. Uncovering Multiple Intrinsic Chiral Phases in (PEA) 2PbI 4 Halide Perovskites. J Phys Chem Lett 2023:4901-4907. [PMID: 37200134 DOI: 10.1021/acs.jpclett.3c00685] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Two-dimensional (2D) halide perovskites offer a unique platform for investigating the ground state of materials possessing significant anharmonicity. In contrast to three-dimensional perovskites, their 2D counterparts offer substantially fewer degrees of freedom, resulting in multiple well-defined crystal structures. In this work, we thoroughly investigate the anharmonic ground state of the benchmark (PEA)2PbI4 compound, using complementary information from low-temperature X-ray diffraction (XRD) and photoluminescence spectroscopy, supported by density functional theory calculations. We extrapolate four crystallographic configurations from low-temperature XRD. These configurations imply that the ground state has an intrinsic disorder stemming from two coexisting chiral sublattices, each with a bioriented organic spacer molecule. We further show evidence that these chiral structures form unevenly populated ground states, portraying uneven anharmonicity, where the state population may be tuned by surface effects. Our results uncover a disordered ground state that may induce intrinsic grain boundaries, which cannot be ignored in practical applications.
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Affiliation(s)
- Shahar Zuri
- Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Information Center and the Grand Technion Energy Program, Technion, Haifa 3200003, Israel
| | - Arthur Shapiro
- Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Information Center and the Grand Technion Energy Program, Technion, Haifa 3200003, Israel
| | - Leeor Kronik
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovoth 76100, Israel
| | - Efrat Lifshitz
- Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Information Center and the Grand Technion Energy Program, Technion, Haifa 3200003, Israel
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4
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Yumoto G, Kanemitsu Y. Biexciton dynamics in halide perovskite nanocrystals. Phys Chem Chem Phys 2022; 24:22405-22425. [PMID: 36106456 DOI: 10.1039/d2cp02826c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lead halide perovskite nanocrystals are attracting considerable interest as next-generation optoelectronic materials. Optical responses of nanocrystals are determined by excitons and exciton complexes such as trions and biexcitons. Understanding of their dynamics is indispensable for the optimal design of optoelectronic devices and the development of new functional properties. Here, we summarize the recent advances on the exciton and biexciton photophysics in lead halide perovskite nanocrystals revealed by femtosecond time-resolved spectroscopy and single-dot spectroscopy. We discuss the impact of the biexciton dynamics on controlling and improving the optical gain.
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Affiliation(s)
- Go Yumoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
| | - Yoshihiko Kanemitsu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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5
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Abstract
Mechanistic studies on lead halide perovskites (LHPs) in recent years have suggested charge carrier screening as partially responsible for long carrier diffusion lengths and lifetimes that are key to superior optoelectronic properties. These findings have led to the ferroelectric large polaron proposal, which attributes efficient charge carrier screening to the extended ordering of dipoles from symmetry-breaking unit cells that undergo local structural distortion and break inversion symmetry. It remains an open question whether this proposal applies in general to semiconductors with LHP-like anharmonic and dynamically disordered phonons. Here, we study electron-phonon coupling in Bi2O2Se, a semiconductor which bears resemblance to LHPs in ionic bonding, spin-orbit coupling, band transport with long carrier diffusion lengths and lifetimes, and phonon disorder as revealed by temperature-dependent Raman spectroscopy. Using coherent phonon spectroscopy, we show the strong coupling of an anharmonic phonon mode at 1.50 THz to photo-excited charge carriers, while the Raman excitation of this mode is symmetry-forbidden in the ground-state. Density functional theory calculations show that this mode, originating from the A1g phonon of out-of-plane Bi/Se motion, gains oscillator strength from symmetry-lowering in polaron formation. Specifically, lattice distortion upon ultrafast charge localization results in extended ordering of symmetry-breaking unit cells and a planar polaron wavefunction, namely a two-dimensional polaron in a three-dimensional lattice. This study provides experimental and theoretical insights into charge interaction with anharmonic phonons in Bi2O2Se and suggests ferroelectric polaron formation may be a general principle for efficient charge carrier screening and for defect-tolerant semiconductors.
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Lai R, Yang Z, Zhi C, Cao X, Li Z, Di D, Yang Y. Transient Suppression of Carrier Mobility Due to Hot Optical Phonons in Lead Bromide Perovskites. J Phys Chem Lett 2022; 13:5488-5494. [PMID: 35687791 DOI: 10.1021/acs.jpclett.2c01453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In lead halide perovskites, owing to the strong Fröhlich coupling, carrier dynamics that governs the optoelectronic performance is greatly affected by the lattice vibrations. In this emerging class of materials, injected hot carriers quickly relax by emitting optical phonons, and if this process is sufficiently fast, hot optical phonons can be generated, which may in turn hamper the carrier transport. However, the transient interaction between hot phonons and carriers has not yet been investigated. Herein, we identified the transient absorption feature of hot phonons in lead bromide perovskites and then extracted the hot-phonon dynamics. The hot-phonon decay mechanism was uncovered by temperature-dependent measurements. The hot-phonon decay in lead bromide perovskites was an order of magnitude faster than that in GaAs, attributed to the large anharmonicity arising from the lattice softness and structural fluctuation. The carrier mobility was also transiently suppressed by hot phonons, and the mobility recovery was accompanied by the decay of hot phonons.
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Affiliation(s)
- Runchen Lai
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310027, China
| | - Zhangqiang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Chongyang Zhi
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene, Xi'an 710072, China
| | - Xuhui Cao
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310027, China
| | - Zhen Li
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene, Xi'an 710072, China
| | - Dawei Di
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310027, China
| | - Ye Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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7
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Sun Y, Yao Q, Xing W, Jiang H, Li Y, Chen M, Zhang X, Xiong W, Zhu W, Zheng Y. Organic Cation Diffusion-Induced Heterogeneous Viscoelasticity in Organic-Inorganic Hybrid Perovskite Polycrystalline Films. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22582-22592. [PMID: 35533358 DOI: 10.1021/acsami.2c01632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Organic-inorganic hybrid perovskite (OIHP) polycrystalline films are the key light-absorbing layers of laminated-structure OIHP-based devices that have attracted increasing attention in photoelectronics and flexible electronics. Internal stresses induced by the mismatched responses of laminated layers to long-term and cyclic multiphysical fields generate time-dependent mechanical deformation in OIHP polycrystalline films, which makes the mechanical constitution relation of great significance. However, few studies focus on either the mechanical properties and behaviors of OIHP polycrystalline films or the underlying mechanism coupled with the grain structure and ion diffusion. Here, we uncovered the heterogeneous viscoelasticity of MAPbBr3 films strongly correlated with the grain structure. Combining experiments and modeling, we revealed that the organic cation diffusion from grain interiors to grain boundaries leads to heterogeneity in the chemical distribution and viscoelastic modulus. Our work provides the nanomechanical understanding of the OIHP polycrystalline films that are crucial for safety design and performance optimization in OIHP-based electronics.
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Affiliation(s)
- Yijing Sun
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Qianqian Yao
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Weiwei Xing
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - He Jiang
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Yingbo Li
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Miao Chen
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiaoyue Zhang
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Weiming Xiong
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Wenpeng Zhu
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
| | - Yue Zheng
- Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
- Centre for Physical Mechanics and Biophysics, School of Physics, Sun Yat-sen University, Guangzhou 510275, China
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8
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Cohen A, Brenner TM, Klarbring J, Sharma R, Fabini DH, Korobko R, Nayak PK, Hellman O, Yaffe O. Diverging Expressions of Anharmonicity in Halide Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107932. [PMID: 35076969 DOI: 10.1002/adma.202107932] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Lead-based halide perovskite crystals are shown to have strongly anharmonic structural dynamics. This behavior is important because it may be the origin of their exceptional photovoltaic properties. The double perovskite, Cs2 AgBiBr6 , has been recently studied as a lead-free alternative for optoelectronic applications. However, it does not exhibit the excellent photovoltaic activity of the lead-based halide perovskites. Therefore, to explore the correlation between the anharmonic structural dynamics and optoelectronic properties in lead-based halide perovskites, the structural dynamics of Cs2 AgBiBr6 are investigated and are compared to its lead-based analog, CsPbBr3 . Using temperature-dependent Raman measurements, it is found that both materials are indeed strongly anharmonic. Nonetheless, the expression of their anharmonic behavior is markedly different. Cs2 AgBiBr6 has well-defined normal modes throughout the measured temperature range, while CsPbBr3 exhibits a complete breakdown of the normal-mode picture above 200 K. It is suggested that the breakdown of the normal-mode picture implies that the average crystal structure may not be a proper starting point to understand the electronic properties of the crystal. In addition to our main findings, an unreported phase of Cs2 AgBiBr6 is also discovered below ≈37 K.
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Affiliation(s)
- Adi Cohen
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Thomas M Brenner
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Johan Klarbring
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, SE-581 83, Sweden
| | - Rituraj Sharma
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Douglas H Fabini
- Max Planck Institute for Solid State Research, 70569, Stuttgart, Germany
| | - Roman Korobko
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Pabitra K Nayak
- Tata Institute of Fundamental Research, Hyderabad, 500046, India
| | - Olle Hellman
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, SE-581 83, Sweden
| | - Omer Yaffe
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
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9
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Park Y, Obliger A, Limmer DT. Nonlocal Screening Dictates the Radiative Lifetimes of Excitations in Lead Halide Perovskites. NANO LETTERS 2022; 22:2398-2404. [PMID: 35234469 DOI: 10.1021/acs.nanolett.2c00077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We use path integral molecular dynamics simulations and theory to elucidate the interactions between charge carriers, as mediated by a lead halide perovskite lattice. We find that the charge-lattice coupling of MAPbI3 results in a repulsive interaction between electrons and holes at intermediate distances. The effective interaction is understood using a Gaussian field theory, whereby the underlying soft, polar lattice contributes a nonlocal screening between quasiparticles. Path integral calculations of this nonlocal screening model are used to rationalize the small exciton binding energy and low radiative recombination rate observed experimentally and are compared to traditional Wannier-Mott and Fröhlich models, which fail to do so. These results clarify the origin of the high power conversion efficiencies in lead halide perovskites. Emergent repulsive electron-hole interactions provide a design principle for optimizing soft, polar semiconductors.
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Affiliation(s)
- Yoonjae Park
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Amael Obliger
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - David T Limmer
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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10
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Wang Y, Liu C, Ren Y, Zuo X, Canton SE, Zheng K, Lu K, Lü X, Yang W, Zhang X. Visualizing Light-Induced Microstrain and Phase Transition in Lead-Free Perovskites Using Time-Resolved X-Ray Diffraction. J Am Chem Soc 2022; 144:5335-5341. [PMID: 35302742 DOI: 10.1021/jacs.1c11747] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metal halide perovskites have emerged as promising materials for optoelectronic applications in the last decade. A large amount of effort has been made to investigate the interplay between the crystalline lattice and photoexcited charge carriers as it is vital to their optoelectronic performance. Among them, ultrafast laser spectroscopy has been intensively utilized to explore the charge carrier dynamics of perovskites, from which the local structural information can only be extracted indirectly. Here, we have applied a time-resolved X-ray diffraction technique to investigate the structural dynamics of prototypical two-dimensional lead-free halide perovskite Cs3Bi2Br9 nanoparticles across temporal scales from 80 ps to microseconds. We observed a quick recoverable (a few ns) photoinduced microstrain up to 0.15% and a long existing lattice expansion (∼a few hundred nanoseconds) at mild laser fluence. Once the laser flux exceeds 1.4 mJ/cm2, the microstrain saturates and the crystalline phase partially transfers into a disordered phase. This photoinduced transient structural change can recover within the nanosecond time scale. These results indicate that photoexcitation of charge carriers couples with lattice distortion, which fundamentally affects the dielectric environment and charge carrier transport.
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Affiliation(s)
- Yingqi Wang
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Cunming Liu
- X-ray Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Yang Ren
- Department of Physics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong, China
| | - Xiaobing Zuo
- X-ray Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | | | - Kaibo Zheng
- Department of Chemical Physics and Nanolund, Lund University, Box 124, 22100 Lund, Sweden
| | - Kuangda Lu
- Biomedical Engineering Department, Peking University, Beijing 100871, China
| | - Xujie Lü
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Wenge Yang
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Xiaoyi Zhang
- X-ray Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
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11
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Rojas-Gatjens E, Silva-Acuña C, Kandada ARS. Peculiar anharmonicity of Ruddlesden Popper metal halides: temperature-dependent phonon dephasing. MATERIALS HORIZONS 2022; 9:492-499. [PMID: 34904992 DOI: 10.1039/d1mh01010g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The anharmonicity of the Ruddlesden Popper metal-halide lattice, and its consequences for their electronic and optical properties, are paramount in their basic semiconductor physics. It is thus critical to identify specific anharmonic optical phonons that govern their photophysics. Here, we address the nature of phonon-phonon scattering probabilities of the resonantly excited optical phonons that dress the electronic transitions in these materials. Based on the temperature dependence of the coherent phonon lifetimes, we isolate the dominant anharmonic phonon and quantify its phonon-phonon interaction strength. Intriguingly, we also observe that the anharmonicity is distinct for different phonons, with a few select modes exhibiting temperature-independent coherence lifetimes, indicating their predominantly harmonic nature. However, the population and dephasing dynamics of excitons are dominated by the anharmonic phonon.
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Affiliation(s)
- Esteban Rojas-Gatjens
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, USA.
| | - Carlos Silva-Acuña
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, USA.
- School of Physics, Georgia Institute of Technology, 837 State Street, Atlanta, Georgia 30332, USA
- School of Materials Science and Engineering, Georgia Institute of Technology, North Avenue, Atlanta, GA 30332, USA
| | - Ajay Ram Srimath Kandada
- Department of Physics and Center for Functional Materials, Wake Forest University, 1834 Wake Forest Road, Winston-Salem, NC 27109, USA.
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12
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Ummadisingu A, Meloni S, Mattoni A, Tress W, Grätzel M. Crystal‐Size‐Induced Band Gap Tuning in Perovskite Films. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amita Ummadisingu
- Laboratory of Photonics and Interfaces (LPI) Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
| | - Simone Meloni
- Dipartimento di Ingegneria Meccanica e Aerospaziale Università di Roma “Sapienza” via Eudossiana 19 00184 Roma Italy
- Dipartimento di Scienze Chimiche Farmaceutiche e Agrarie (DOCPAS) Università degli Studi di Ferrara (Unife) Via Luigi Borsari 46 44121 Ferrara Italy
| | - Alessandro Mattoni
- Istituto Officina dei Materiali IOM—CNR Consiglio Nazionale delle Ricerche, Cagliari Cittadella Universitaria 09042 Monserrato (Ca) Italy
| | - Wolfgang Tress
- Laboratory of Photomolecular Science (LSPM) Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces (LPI) Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
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13
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Ummadisingu A, Meloni S, Mattoni A, Tress W, Grätzel M. Crystal-Size-Induced Band Gap Tuning in Perovskite Films. Angew Chem Int Ed Engl 2021; 60:21368-21376. [PMID: 34288311 PMCID: PMC8518849 DOI: 10.1002/anie.202106394] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/06/2021] [Indexed: 11/16/2022]
Abstract
A comprehensive picture explaining the effect of the crystal size in metal halide perovskite films on their opto‐electronic characteristics is currently lacking. We report that perovskite nanocrystallites exhibit a wider band gap due to concurrent quantum confinement and size dependent structural effects, with the latter being remarkably distinct and attributed to the perturbation from the surface of the nanocrystallites affecting the structure of their core. This phenomenon might assist in the photo‐induced charge separation within the perovskite in devices employing mesoporous layers as they restrict the size of nanocrystallites present in them. We demonstrate that the crystal size effect is widely applicable as it is ubiquitous in different compositions and deposition methods employed in the fabrication of state‐of‐the‐art perovskite solar cells. This effect is a convenient and effective way to tune the band gap of perovskites.
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Affiliation(s)
- Amita Ummadisingu
- Laboratory of Photonics and Interfaces (LPI), Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Station 6, 1015, Lausanne, Switzerland
| | - Simone Meloni
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma "Sapienza", via Eudossiana 19, 00184, Roma, Italy.,Dipartimento di Scienze Chimiche, Farmaceutiche e Agrarie (DOCPAS), Università degli Studi di Ferrara (Unife), Via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Alessandro Mattoni
- Istituto Officina dei Materiali IOM-CNR, Consiglio Nazionale delle Ricerche, Cagliari, Cittadella Universitaria, 09042, Monserrato (Ca), Italy
| | - Wolfgang Tress
- Laboratory of Photomolecular Science (LSPM), Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Station 6, 1015, Lausanne, Switzerland
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces (LPI), Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Station 6, 1015, Lausanne, Switzerland
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14
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Lanigan-Atkins T, He X, Krogstad MJ, Pajerowski DM, Abernathy DL, Xu GNMN, Xu Z, Chung DY, Kanatzidis MG, Rosenkranz S, Osborn R, Delaire O. Two-dimensional overdamped fluctuations of the soft perovskite lattice in CsPbBr 3. NATURE MATERIALS 2021; 20:977-983. [PMID: 33723420 DOI: 10.1038/s41563-021-00947-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/27/2021] [Indexed: 05/20/2023]
Abstract
Lead halide perovskites exhibit structural instabilities and large atomic fluctuations thought to impact their optical and thermal properties, yet detailed structural and temporal correlations of their atomic motions remain poorly understood. Here, these correlations are resolved in CsPbBr3 crystals using momentum-resolved neutron and X-ray scattering measurements as a function of temperature, complemented with first-principles simulations. We uncover a striking network of diffuse scattering rods, arising from the liquid-like damping of low-energy Br-dominated phonons, reproduced in our simulations of the anharmonic phonon self-energy. These overdamped modes cover a continuum of wave vectors along the edges of the cubic Brillouin zone, corresponding to two-dimensional sheets of correlated rotations in real space, and could represent precursors to proposed two-dimensional polarons. Further, these motions directly impact the electronic gap edge states, linking soft anharmonic lattice dynamics and optoelectronic properties. These results provide insights into the highly unusual atomic dynamics of halide perovskites, relevant to further optimization of their optical and thermal properties.
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Affiliation(s)
- T Lanigan-Atkins
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
| | - X He
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
| | - M J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - D M Pajerowski
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - D L Abernathy
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Guangyong N M N Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Zhijun Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - D-Y Chung
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - M G Kanatzidis
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
| | - O Delaire
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA.
- Department of Physics and Department of Chemistry, Duke University, Durham, NC, USA.
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15
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Wei Y, Ma T, Chen J, Zhao M, Zeng H. Metal Halide Perovskites for Optical Parametric Modulation. J Phys Chem Lett 2021; 12:3090-3098. [PMID: 33752334 DOI: 10.1021/acs.jpclett.0c03754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Metal halide perovskites (MHPs) have attracted considerable academic and industrial attention because of their remarkable optoelectronic properties. The development of optical parametric modulation is urgently needed because it plays an important role in display applications and optical communication. Perovskites can become the bridge between materials and optics. Through changing the composition and nanostructure of perovskites, we can modulate optical parameters, including optical intensity, frequency, polarization, and phase. This Perspective provides a brief introduction to this field and summarizes the methods of modulating optical parameters. It is instructive for building a relationship between perovskite nanostructures and optics, which is meaningful for display technologies and optical communication.
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Affiliation(s)
- Yi Wei
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Teng Ma
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jun Chen
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Mingyou Zhao
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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16
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Lobato A, Recio-Poo M, Otero-de-la-Roza A, Salvadó MA, Recio JM. Controlling the off-center positions of anions through thermodynamics and kinetics in flexible perovskite-like materials. Phys Chem Chem Phys 2021; 23:4491-4499. [PMID: 33439159 DOI: 10.1039/d0cp05711h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Due to the network flexibility of their BX3 sub-lattice, a manifold of polymorphs with potential multiferroic applications can be found in perovskite-like ABX3 materials under different pressure and temperature conditions. The potential energy surface of these compounds usually presents equivalent off-center positions of anions connected by low energetic barriers. This feature facilitates a competition between the thermodynamic and kinetic control of the transitions from low to high symmetry structures, and explains the relationship between the rich polymorphism and network flexibility. In the rhombohedral phase of iron trifluoride, our first-principles electronic structure and phonon calculations reveal the factors that determine which of the two scenarios dominates the transition. At the experimentally reported rhombohedral-cubic transition temperature, the calculated fluorine displacements are fast enough to overcome forward and backward a barrier of less than 30 kJ mol-1, leading to an average structure with cubic symmetry. In addition, lattice strain effects observed in epitaxial growth and nanocrystallite experiments involving BX3 compounds are successfully mimicked by computing the phase stability of FeF3 under negative pressures. We predict a transition pressure at -1.8 GPa with a relative volume change around 5%, consistent with a first-order transition from the rhombohedral to the cubic structure. Overall, our study illustrates how, by strain tuning, either a thermodynamic or a kinetic pathway can be selected for this transformation.
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Affiliation(s)
- A Lobato
- MALTA Team and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33006 Oviedo, Spain.
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17
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Rizwan M, Azam W, Gillani SSA, Zeba I, Shakil M, Ali SS, Ahmad R. A computational study to explore the effects of copper doping concentration on phase stability, electronic band structure and optical properties of CsSrF3 fluro-perovskite. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1892226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Muhammad Rizwan
- School of Physical Sciences, University of the Punjab, Lahore, Pakistan
| | - Waqar Azam
- Department of Physics, University of Gujrat, Gujrat, Pakistan
| | - S. S. A. Gillani
- Department of Physics, Government College University Lahore, Lahore, Pakistan
| | - I. Zeba
- Department of Physics, Lahore College for Woman University Lahore, Lahore, Pakistan
| | - M. Shakil
- Department of Physics, University of Gujrat, Gujrat, Pakistan
| | - S. S. Ali
- School of Physical Sciences, University of the Punjab, Lahore, Pakistan
| | - Riaz Ahmad
- Department of Physics, Government College University Lahore, Lahore, Pakistan
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18
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Sekiguchi F, Hirori H, Yumoto G, Shimazaki A, Nakamura T, Wakamiya A, Kanemitsu Y. Enhancing the Hot-Phonon Bottleneck Effect in a Metal Halide Perovskite by Terahertz Phonon Excitation. PHYSICAL REVIEW LETTERS 2021; 126:077401. [PMID: 33666485 DOI: 10.1103/physrevlett.126.077401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
We investigate the impact of phonon excitations on the photoexcited carrier dynamics in a lead-halide perovskite CH_{3}NH_{3}PbI_{3}, which hosts unique low-energy phonons that can be directly excited by terahertz pulses. Our time-resolved photoluminescence measurements reveal that strong terahertz excitation prolongs the cooling time of hot carriers, providing direct evidence for the hot-phonon bottleneck effect. In contrast to the previous studies where phonons are treated as a passive heat bath, our results demonstrate that phonon excitation can significantly perturb the carrier relaxation dynamics in halide perovskites through the coupling between transverse- and longitudinal-optical phonons.
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Affiliation(s)
- Fumiya Sekiguchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hideki Hirori
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Go Yumoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Ai Shimazaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tomoya Nakamura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Atsushi Wakamiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yoshihiko Kanemitsu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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19
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Wang F, Fu Y, Ziffer ME, Dai Y, Maehrlein SF, Zhu XY. Solvated Electrons in Solids-Ferroelectric Large Polarons in Lead Halide Perovskites. J Am Chem Soc 2021; 143:5-16. [PMID: 33320656 DOI: 10.1021/jacs.0c10943] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solvation plays a pivotal role in chemistry and biology. A solid-state analogy of solvation is polaron formation, but the magnitude of Coulomb screening is typically an order of magnitude weaker than that of solvation in aqueous solutions. Here, we describe a new class of polarons, the ferroelectric large polaron, proposed initially by Miyata and Zhu in 2018 (Miyata, K.; Zhu, X.-Y. Ferroelectric Large Polarons. Nat. Mater. 2018, 17 (5), 379-381). This type of polaron allows efficient Coulomb screening of an electron or hole by extended ordering of dipoles from symmetry-broken unit cells. The local ordering is reflected in the ferroelectric-like THz dielectric responses of lead halide perovskites (LHPs) and may be partially responsible for their exceptional optoelectronic performances. Despite the likely absence of long-range ferroelectricity in LHPs, a charge carrier may be localized to and/or induce the formation of nanoscale domain boundaries of locally ordered dipoles. Based on the known planar nature of energetically favorable domain boundaries in ferroelectric materials, we propose that a ferroelectric polaron localizes to planar boundaries of transient polar nanodomains. This proposal is supported by dynamic simulations showing sheet-like transient electron or hole wave functions in LHPs. Thus, the Belgian-waffle-shaped ferroelectric polaron in the three-dimensional LHP crystal structure is a large polaron in two dimensions and a small polaron in the perpendicular direction. The ferroelectric large polaron may form in other crystalline solids characterized by dynamic symmetry breaking and polar fluctuations. We suggest that the ability to form ferroelectric large polarons can be a general principle for the efficient screening of charge carriers from scattering with other charge carriers, with charged defects and with longitudinal optical phonons, thus contributing to enhanced optoelectronic properties.
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Affiliation(s)
- Feifan Wang
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Yongping Fu
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Mark E Ziffer
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Yanan Dai
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Sebastian F Maehrlein
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - X-Y Zhu
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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20
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Yang J. Composition-dependent chemical and structural stabilities of mixed tin-lead inorganic halide perovskites. Phys Chem Chem Phys 2020; 22:19787-19794. [PMID: 32844822 DOI: 10.1039/d0cp03170d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Alloying tin into lead-based halide perovskites is one of the strategies to reduce the chemical toxicities associated with lead-containing compounds, while retaining comparable physical properties. However, tin-based compounds possess their own shortcomings, with the most critical ones being their increased thermodynamic tendencies towards oxidative degradation, as well as vibrational anharmonicities due to the presence of shallow Sn-5s2 lone-pair electrons. Hereby, we performed density-functional-theory calculations to systematically examine the composition-dependent chemical and structural stabilities for Cs(PbxSn1-x)X3 (X = Cl, Br and I) alloys. We found that oxidative degradation to rhombohedral Cs2SnX6, SnO2 and cubic CsSnX3 tends to be the most favored pathway with no observable composition-dependent 'bowing behaviour', the latter is primarily governed by the bowing-effects in the demixing energies which are generated when the perovskite alloy phase-segregates into the two cubic end-members, which are two orders of magnitude smaller. Potential surface energy scans for the off-center B-site ion displacements further reveal the nonlinearity in the change of vibrational anharmonicity with respect to a linear change of Sn concentrations. Such nonlinearity is strongly modulated by the nature of the halide ions, in order to minimize the exchange repulsion between the charge densities of Sn-5s2 lone pairs and the octahedrally coordinating halogen anions.
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Affiliation(s)
- Jack Yang
- Materials and Manufacturing Futures Institute, School of Material Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia. and Australian Nuclear Science and Technology Organization, New Illawarra Rd, Lucas Heights, New South Wales, 2234, Australia
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21
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Klarbring J, Hellman O, Abrikosov IA, Simak SI. Anharmonicity and Ultralow Thermal Conductivity in Lead-Free Halide Double Perovskites. PHYSICAL REVIEW LETTERS 2020; 125:045701. [PMID: 32794779 DOI: 10.1103/physrevlett.125.045701] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
The lead-free halide double perovskite class of materials offers a promising venue for resolving issues related to toxicity of Pb and long-term stability of the lead-containing halide perovskites. We present a first-principles study of the lattice vibrations in Cs_{2}AgBiBr_{6}, the prototypical compound in this class and show that the lattice dynamics of Cs_{2}AgBiBr_{6} is highly anharmonic, largely in regards to tilting of AgBr_{6} and BiBr_{6} octahedra. Using an energy- and temperature-dependent phonon spectral function, we then show how the experimentally observed cubic-to-tetragonal phase transformation is caused by the collapse of a soft phonon branch. We finally reveal that the softness and anharmonicity of Cs_{2}AgBiBr_{6} yield an ultralow thermal conductivity, unexpected of high-symmetry cubic structures.
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Affiliation(s)
- Johan Klarbring
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (FIM), Linköping University, SE-581 83 Linköping, Sweden
| | - Olle Hellman
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (FIM), Linköping University, SE-581 83 Linköping, Sweden
| | - Igor A Abrikosov
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (FIM), Linköping University, SE-581 83 Linköping, Sweden
- Materials Modeling and Development Laboratory, National University of Science and Technology (NUST) "MISIS", 119049 Moscow, Russia
| | - Sergei I Simak
- Theoretical Physics Division, Department of Physics, Chemistry and Biology (FIM), Linköping University, SE-581 83 Linköping, Sweden
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22
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Manley ME, Hong K, Yin P, Chi S, Cai Y, Hua C, Daemen LL, Hermann RP, Wang H, May AF, Asta M, Ahmadi M. Giant isotope effect on phonon dispersion and thermal conductivity in methylammonium lead iodide. SCIENCE ADVANCES 2020; 6:eaaz1842. [PMID: 32789169 PMCID: PMC7399528 DOI: 10.1126/sciadv.aaz1842] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 06/19/2020] [Indexed: 05/29/2023]
Abstract
Lead halide perovskites are strong candidates for high-performance low-cost photovoltaics, light emission, and detection applications. A hot-phonon bottleneck effect significantly extends the cooling time of hot charge carriers, which thermalize through carrier-optic phonon scattering, followed by optic phonon decay to acoustic phonons and finally thermal conduction. To understand these processes, we adjust the lattice dynamics independently of electronics by changing isotopes. We show that doubling the mass of hydrogen in methylammonium lead iodide by replacing protons with deuterons causes a large 20 to 50% softening of the longitudinal acoustic phonons near zone boundaries, reduces thermal conductivity by ~50%, and slows carrier relaxation kinetics. Phonon softening is attributed to anticrossing with the slowed libration modes of the deuterated molecules and the reduced thermal conductivity to lowered phonon velocities. Our results reveal how tuning the organic molecule dynamics enables control of phonons important to thermal conductivity and the hot-phonon bottleneck.
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Affiliation(s)
- M. E. Manley
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - K. Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - P. Yin
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - S. Chi
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Y. Cai
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
| | - C. Hua
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - L. L. Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - R. P. Hermann
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - H. Wang
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - A. F. May
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - M. Asta
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - M. Ahmadi
- Joint Institute for Advanced Materials, Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA
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23
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Seitz M, Magdaleno AJ, Alcázar-Cano N, Meléndez M, Lubbers TJ, Walraven SW, Pakdel S, Prada E, Delgado-Buscalioni R, Prins F. Exciton diffusion in two-dimensional metal-halide perovskites. Nat Commun 2020; 11:2035. [PMID: 32341361 PMCID: PMC7184754 DOI: 10.1038/s41467-020-15882-w] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/02/2020] [Indexed: 11/19/2022] Open
Abstract
Two-dimensional layered perovskites are attracting increasing attention as more robust analogues to the conventional three-dimensional metal-halide perovskites for both light harvesting and light emitting applications. However, the impact of the reduced dimensionality on the optoelectronic properties remains unclear, particularly regarding the spatial dynamics of the excitonic excited state within the two-dimensional plane. Here, we present direct measurements of exciton transport in single-crystalline layered perovskites. Using transient photoluminescence microscopy, we show that excitons undergo an initial fast diffusion through the crystalline plane, followed by a slower subdiffusive regime as excitons get trapped. Interestingly, the early intrinsic diffusivity depends sensitively on the choice of organic spacer. A clear correlation between lattice stiffness and diffusivity is found, suggesting exciton–phonon interactions to be dominant in the spatial dynamics of the excitons in perovskites, consistent with the formation of exciton–polarons. Our findings provide a clear design strategy to optimize exciton transport in these systems. The so-called two-dimensional (2D) layered perovskites possess distinct optoelectronic properties from their 3D counterparts due to their reduced dimensionality. Here Seitz et al. investigate the exciton transport dynamics in 2D perovskites and highlight the impact of the stiffness of the lattice.
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Affiliation(s)
- Michael Seitz
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Alvaro J Magdaleno
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Nerea Alcázar-Cano
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Theoretical Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Marc Meléndez
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Theoretical Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Tim J Lubbers
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Sanne W Walraven
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Sahar Pakdel
- Department of Physics and Astronomy, Aarhus University, 8000, Aarhus C, Denmark
| | - Elsa Prada
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Rafael Delgado-Buscalioni
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain.,Department of Theoretical Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain
| | - Ferry Prins
- Condensed Matter Physics Center (IFIMAC), Autonomous University of Madrid, 28049, Madrid, Spain. .,Department of Condensed Matter Physics, Autonomous University of Madrid, 28049, Madrid, Spain.
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24
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Affiliation(s)
- David B Mitzi
- Department of Mechanical Engineering and Materials Science and Department of Chemistry , Duke University
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25
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Fu Y, Jiang X, Li X, Traore B, Spanopoulos I, Katan C, Even J, Kanatzidis MG, Harel E. Cation Engineering in Two-Dimensional Ruddlesden–Popper Lead Iodide Perovskites with Mixed Large A-Site Cations in the Cages. J Am Chem Soc 2020; 142:4008-4021. [DOI: 10.1021/jacs.9b13587] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yongping Fu
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Xinyi Jiang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Xiaotong Li
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Boubacar Traore
- Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
- Univ Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082, 35000 Rennes, France
| | - Ioannis Spanopoulos
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Claudine Katan
- Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
| | - Jacky Even
- Univ Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082, 35000 Rennes, France
| | - Mercouri G. Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Elad Harel
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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26
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Chen Y, Lei Y, Li Y, Yu Y, Cai J, Chiu MH, Rao R, Gu Y, Wang C, Choi W, Hu H, Wang C, Li Y, Song J, Zhang J, Qi B, Lin M, Zhang Z, Islam AE, Maruyama B, Dayeh S, Li LJ, Yang K, Lo YH, Xu S. Strain engineering and epitaxial stabilization of halide perovskites. Nature 2020; 577:209-215. [DOI: 10.1038/s41586-019-1868-x] [Citation(s) in RCA: 255] [Impact Index Per Article: 63.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 11/19/2019] [Indexed: 12/23/2022]
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27
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Fu Y, Hautzinger MP, Luo Z, Wang F, Pan D, Aristov MM, Guzei IA, Pan A, Zhu X, Jin S. Incorporating Large A Cations into Lead Iodide Perovskite Cages: Relaxed Goldschmidt Tolerance Factor and Impact on Exciton-Phonon Interaction. ACS CENTRAL SCIENCE 2019; 5:1377-1386. [PMID: 31482120 PMCID: PMC6716133 DOI: 10.1021/acscentsci.9b00367] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Indexed: 05/18/2023]
Abstract
The stability and formation of a perovskite structure is dictated by the Goldschmidt tolerance factor as a general geometric guideline. The tolerance factor has limited the choice of cations (A) in 3D lead iodide perovskites (APbI3), an intriguing class of semiconductors for high-performance photovoltaics and optoelectronics. Here, we show the tolerance factor requirement is relaxed in 2D Ruddlesden-Popper (RP) perovskites, enabling the incorporation of a variety of larger cations beyond the methylammonium (MA), formamidinium, and cesium ions in the lead iodide perovskite cages for the first time. This is unequivocally confirmed with the single-crystal X-ray structure of newly synthesized guanidinium (GA)-based (n-C6H13NH3)2(GA)Pb2I7, which exhibits significantly enlarged and distorted perovskite cage containing sterically constrained GA cation. Structural comparison with (n-C6H13NH3)2(MA)Pb2I7 reveals that the structural stabilization originates from the mitigation of strain accumulation and self-adjustable strain-balancing in 2D RP structures. Furthermore, spectroscopic studies show a large A cation significantly influences carrier dynamics and exciton-phonon interactions through modulating the inorganic sublattice. These results enrich the diverse families of perovskite materials, provide new insights into the mechanistic role of A-site cations on their physical properties, and have implications to solar device studies using engineered perovskite thin films incorporating such large organic cations.
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Affiliation(s)
- Yongping Fu
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Matthew P. Hautzinger
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ziyu Luo
- Key
Laboratory for Micro-Nano Physics and Technology of Hunan Province,
College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China
| | - Feifan Wang
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Dongxu Pan
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Michael M. Aristov
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ilia A. Guzei
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Anlian Pan
- Key
Laboratory for Micro-Nano Physics and Technology of Hunan Province,
College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China
| | - Xiaoyang Zhu
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Song Jin
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- E-mail: (S.J.)
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28
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Liu M, Chen Y, Tan CS, Quintero-Bermudez R, Proppe AH, Munir R, Tan H, Voznyy O, Scheffel B, Walters G, Kam APT, Sun B, Choi MJ, Hoogland S, Amassian A, Kelley SO, García de Arquer FP, Sargent EH. Lattice anchoring stabilizes solution-processed semiconductors. Nature 2019; 570:96-101. [DOI: 10.1038/s41586-019-1239-7] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 03/28/2019] [Indexed: 12/23/2022]
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29
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Guo Y, Yaffe O, Hull TD, Owen JS, Reichman DR, Brus LE. Dynamic emission Stokes shift and liquid-like dielectric solvation of band edge carriers in lead-halide perovskites. Nat Commun 2019; 10:1175. [PMID: 30862815 PMCID: PMC6414684 DOI: 10.1038/s41467-019-09057-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 02/12/2019] [Indexed: 11/18/2022] Open
Abstract
Lead-halide perovskites have emerged as promising materials for photovoltaic and optoelectronic applications. Their significantly anharmonic lattice motion, in contrast to conventional harmonic semiconductors, presents a conceptual challenge in understanding the genesis of their exceptional optoelectronic properties. Here we report a strongly temperature dependent luminescence Stokes shift in the electronic spectra of both hybrid and inorganic lead-bromide perovskite single crystals. This behavior stands in stark contrast to that exhibited by more conventional crystalline semiconductors. We correlate the electronic spectra with the anti-Stokes and Stokes Raman vibrational spectra. Dielectric solvation theories, originally developed for excited molecules dissolved in polar liquids, reproduce our experimental observations. Our approach, which invokes a classical Debye-like relaxation process, captures the dielectric response originating from the incipient anharmonicity of the LO phonon at about 20 meV (160 cm-1) in the lead-bromide framework. We reconcile this liquid-like model incorporating thermally-activated dielectric solvation with more standard solid-state theories of the emission Stokes shift in crystalline semiconductors.
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Affiliation(s)
- Yinsheng Guo
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Omer Yaffe
- Department of Materials and Interfaces, Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Trevor D Hull
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Jonathan S Owen
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - David R Reichman
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Louis E Brus
- Department of Chemistry, Columbia University, New York, NY, 10027, USA.
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30
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Abstract
Lead halide perovskites are emerging as an excellent material platform for optoelectronic processes. There have been extensive discussions on lasing, polariton formation, and nonlinear processes in this material system, but the underlying mechanism remains unknown. Here we probe lasing from CsPbBr3 perovskite nanowires with picosecond (ps) time resolution and show that lasing originates from stimulated emission of an electron-hole plasma. We observe an anomalous blue-shifting of the lasing gain profile with time up to 25 ps, and assign this as a signature for lasing involving plasmon emission. The time domain view provides an ultra-sensitive probe of many-body physics which was obscured in previous time-integrated measurements of lasing from lead halide perovskite nanowires. Lead-halide perovskite are an interesting material platform for light-emitting devices but the underlying lasing mechanism is still disputed. Here, Schlaus et al. use time-resolved spectroscopy of CsPbBr3 nanowires to show that lasing results from stimulated emission of an electron-hole plasma.
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31
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Katan C, Mercier N, Even J. Quantum and Dielectric Confinement Effects in Lower-Dimensional Hybrid Perovskite Semiconductors. Chem Rev 2019; 119:3140-3192. [PMID: 30638375 DOI: 10.1021/acs.chemrev.8b00417] [Citation(s) in RCA: 283] [Impact Index Per Article: 56.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hybrid halide perovskites are now superstar materials leading the field of low-cost thin film photovoltaics technologies. Following the surge for more efficient and stable 3D bulk alloys, multilayered halide perovskites and colloidal perovskite nanostructures appeared in 2016 as viable alternative solutions to this challenge, largely exceeding the original proof of concept made in 2009 and 2014, respectively. This triggered renewed interest in lower-dimensional hybrid halide perovskites and at the same time increasingly more numerous and differentiated applications. The present paper is a review of the past and present literature on both colloidal nanostructures and multilayered compounds, emphasizing that availability of accurate structural information is of dramatic importance to reach a fair understanding of quantum and dielectric confinement effects. Layered halide perovskites occupy a special place in the history of halide perovskites, with a large number of seminal papers in the 1980s and 1990s. In recent years, the rationalization of structure-properties relationship has greatly benefited from new theoretical approaches dedicated to their electronic structures and optoelectronic properties, as well as a growing number of contributions based on modern experimental techniques. This is a necessary step to provide in-depth tools to decipher their extensive chemical engineering possibilities which surpass the ones of their 3D bulk counterparts. Comparisons to classical semiconductor nanostructures and 2D van der Waals heterostructures are also stressed. Since 2015, colloidal nanostructures have undergone a quick development for applications based on light emission. Although intensively studied in the last two years by various spectroscopy techniques, the description of quantum and dielectric confinement effects on their optoelectronic properties is still in its infancy.
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Affiliation(s)
- Claudine Katan
- Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , F-35000 Rennes , France
| | - Nicolas Mercier
- MOLTECH ANJOU, UMR-CNRS 6200, Université d'Angers , 2 Bd Lavoisier , 49045 Angers , France
| | - Jacky Even
- Univ Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082 , F-35000 Rennes , France
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32
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Neukirch AJ, Abate II, Zhou L, Nie W, Tsai H, Pedesseau L, Even J, Crochet JJ, Mohite AD, Katan C, Tretiak S. Geometry Distortion and Small Polaron Binding Energy Changes with Ionic Substitution in Halide Perovskites. J Phys Chem Lett 2018; 9:7130-7136. [PMID: 30523689 DOI: 10.1021/acs.jpclett.8b03343] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Halide perovskites have demonstrated remarkable performance in optoelectronic applications. Despite extraordinary progress, questions remain about device stability. We report an in-depth computational study of small polaron formation, electronic structure, charge density, and reorganization energies of several experimentally relevant halide perovskites using isolated clusters. Local lattice symmetry, electronic structure, and electron-phonon coupling are interrelated in polaron formation in these materials. To illustrate this, first-principles calculations are performed on (MA/Cs/FA)Pb(I/Br)3 and MASnI3. Across the materials studied, electron small polaron formation is manifested by Jahn-Teller-like distortions in the central octahedron, with apical PbI bonds expanding significantly more than the equatorial bonds. In contrast, hole polarons cause the central octahedron to uniformly contract. This difference in manifestation of electron and hole polaron formation can be a tool to determine what is taking place in individual systems to systematically control performance. Other trends as the anion and cations are changed are established for optimization in specific optoelectronic applications.
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Affiliation(s)
- Amanda J Neukirch
- Theoretical Physics and Chemistry of Materials , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Iwnetim I Abate
- Department of Materials Science and Engineering , Stanford University , Stanford , California 94305 , United States
- Stanford Institute for Materials and Energy Sciences , SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States
| | - Liujiang Zhou
- Theoretical Physics and Chemistry of Materials , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Wanyi Nie
- Materials Physics and Application , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Hsinhan Tsai
- Materials Physics and Application , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Laurent Pedesseau
- Univ Rennes , INSA Rennes , CNRS, Institut FOTON - UMR 6082, F- 35000 Rennes , France
| | - Jacky Even
- Univ Rennes , INSA Rennes , CNRS, Institut FOTON - UMR 6082, F- 35000 Rennes , France
| | - Jared J Crochet
- Physical Chemistry and Applied Spectroscopy Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Aditya D Mohite
- Department of Chemical and Biomolecular Engineering , Rice University , Houston , Texas 77006 , United States
| | - Claudine Katan
- Univ Rennes, ENSCR , INSA Rennes , CNRS, ISCR - UMR 6226, F- 35000 Rennes , France
| | - Sergei Tretiak
- Theoretical Physics and Chemistry of Materials , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
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33
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Munson KT, Kennehan ER, Doucette GS, Asbury JB. Dynamic Disorder Dominates Delocalization, Transport, and Recombination in Halide Perovskites. Chem 2018. [DOI: 10.1016/j.chempr.2018.09.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Gold-Parker A, Gehring PM, Skelton JM, Smith IC, Parshall D, Frost JM, Karunadasa HI, Walsh A, Toney MF. Acoustic phonon lifetimes limit thermal transport in methylammonium lead iodide. Proc Natl Acad Sci U S A 2018; 115:11905-11910. [PMID: 30401737 PMCID: PMC6255186 DOI: 10.1073/pnas.1812227115] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Hybrid organic-inorganic perovskites (HOIPs) have become an important class of semiconductors for solar cells and other optoelectronic applications. Electron-phonon coupling plays a critical role in all optoelectronic devices, and although the lattice dynamics and phonon frequencies of HOIPs have been well studied, little attention has been given to phonon lifetimes. We report high-precision momentum-resolved measurements of acoustic phonon lifetimes in the hybrid perovskite methylammonium lead iodide (MAPI), using inelastic neutron spectroscopy to provide high-energy resolution and fully deuterated single crystals to reduce incoherent scattering from hydrogen. Our measurements reveal extremely short lifetimes on the order of picoseconds, corresponding to nanometer mean free paths and demonstrating that acoustic phonons are unable to dissipate heat efficiently. Lattice-dynamics calculations using ab initio third-order perturbation theory indicate that the short lifetimes stem from strong three-phonon interactions and a high density of low-energy optical phonon modes related to the degrees of freedom of the organic cation. Such short lifetimes have significant implications for electron-phonon coupling in MAPI and other HOIPs, with direct impacts on optoelectronic devices both in the cooling of hot carriers and in the transport and recombination of band edge carriers. These findings illustrate a fundamental difference between HOIPs and conventional photovoltaic semiconductors and demonstrate the importance of understanding lattice dynamics in the effort to develop metal halide perovskite optoelectronic devices.
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Affiliation(s)
- Aryeh Gold-Parker
- Department of Chemistry, Stanford University, Stanford, CA 94305
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025
| | - Peter M Gehring
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - Jonathan M Skelton
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Ian C Smith
- Department of Chemistry, Stanford University, Stanford, CA 94305
| | - Dan Parshall
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - Jarvist M Frost
- Department of Physics, King's College London, London WC2R 2LS, United Kingdom
| | | | - Aron Walsh
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Korea
| | - Michael F Toney
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
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35
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Wei W, Li W, Butler KT, Feng G, Howard CJ, Carpenter MA, Lu P, Walsh A, Cheetham AK. An Unusual Phase Transition Driven by Vibrational Entropy Changes in a Hybrid Organic-Inorganic Perovskite. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wenjuan Wei
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Wei Li
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Keith T. Butler
- ISIS Facility; Rutherford Appleton Laboratory; Harwell Oxford; Didcot Oxfordshire OX11 0QX UK
| | - Guoqiang Feng
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | | | | | - Peixiang Lu
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
- Laboratory of Optical Information Technology; Wuhan Institute of Technology; Wuhan 430205 China
| | - Aron Walsh
- Department of Materials; Imperial College London; Royal School of Mines; London SW7 2AZ UK
| | - Anthony K. Cheetham
- Department of Materials Science and Metallurgy; University of Cambridge; Cambridge CB3 0FS UK
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36
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Wei W, Li W, Butler KT, Feng G, Howard CJ, Carpenter MA, Lu P, Walsh A, Cheetham AK. An Unusual Phase Transition Driven by Vibrational Entropy Changes in a Hybrid Organic-Inorganic Perovskite. Angew Chem Int Ed Engl 2018; 57:8932-8936. [DOI: 10.1002/anie.201803176] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Wenjuan Wei
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Wei Li
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Keith T. Butler
- ISIS Facility; Rutherford Appleton Laboratory; Harwell Oxford; Didcot Oxfordshire OX11 0QX UK
| | - Guoqiang Feng
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | | | | | - Peixiang Lu
- School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
- Laboratory of Optical Information Technology; Wuhan Institute of Technology; Wuhan 430205 China
| | - Aron Walsh
- Department of Materials; Imperial College London; Royal School of Mines; London SW7 2AZ UK
| | - Anthony K. Cheetham
- Department of Materials Science and Metallurgy; University of Cambridge; Cambridge CB3 0FS UK
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