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Li M, Fei J, Zhang X, Li J, Tong C, Long M. First-principles study of phase-dependent carrier transport mechanism for MASnI 3Sn-based halide perovskite. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:425301. [PMID: 38976979 DOI: 10.1088/1361-648x/ad604e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 07/08/2024] [Indexed: 07/10/2024]
Abstract
Organic-inorganic hybrid perovskites have attracted tremendous attentions owing to their excellent properties as next-generation photovoltaic devices. With soft covalent framework, organic-inorganic hybrid perovskites exhibit different phases at different temperatures. The band-edge features of perovskites are mainly contributed by inorganic framework, which means the structural differences between these phases would lead to complex carrier transport. We investigated the carrier transport of Sn-based organic-inorganic hybrid perovskite CH3NH3SnI3(MASnI3), considering acoustic deformation potential scattering, ionized impurity scattering, and polar optical phonon scattering. It is found that the electron mobility of each phase of MASnI3is strongly correlated with the Sn-I-Sn bond angle and there is in-plane/out-of-plane anisotropy. The projected crystal orbital Hamilton population analysis suggested that the tilt and rotation of the [SnI6]4-octahedron influence the Sn(p)-I(p) orbital electron coupling and the electron transport, leading to different band-edge features in multiple phases. The carrier mobility with respect to temperature was further calculated for each phase of MASnI3in respective temperature intervals, showing lower carrier mobility in high temperature. Comparing the contribution of different scattering mechanisms, it was found that the dominant scattering mechanism is polar optical phonon scattering, while multiple scattering mechanisms compete in individual cases.
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Affiliation(s)
- Mingming Li
- School of Microelectronics and Physics, Hunan University of Technology and Business, Changsha 410205, People's Republic of China
- Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Jiajia Fei
- Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Xiaojiao Zhang
- School of Microelectronics and Physics, Hunan University of Technology and Business, Changsha 410205, People's Republic of China
| | - Jialin Li
- Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Chuanjia Tong
- Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Mengqiu Long
- Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
- School of Physical Science and Technology, Xinjiang University, Urumqi 830046, Xinjiang, People's Republic of China
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2
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Lytle KM, Brass EL, Roman BJ, Sheldon MT. Thermal Activation of Anti-Stokes Photoluminescence in CsPbBr 3 Perovskite Nanocrystals: The Role of Surface Polaron States. ACS NANO 2024; 18:18457-18464. [PMID: 38965899 DOI: 10.1021/acsnano.4c03548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Optically driven cooling of a material, or optical refrigeration, is possible when optical up-conversion via anti-Stokes photoluminescence (ASPL) is achieved with near-unity quantum yield. The recent demonstration of optical cooling of CsPbBr3 perovskite nanocrystals (NCs) has provided a path forward in the development of semiconductor-based optical refrigeration strategies. However, the mechanism of ASPL in CsPbBr3 NCs is not yet settled, and the prospects for cooling technologies strongly depend on details of the mechanism. By analyzing the Arrhenius behavior of ASPL in CsPbBr3 NCs, we investigated the relationship between the average energy gained per photon during up conversion, ΔE, and the thermal activation energy, Ea. We find that Ea is systematically larger than ΔE, and that Ea increases for larger ΔE. We suggest that the additional energetic cost is due to a rearrangement of the crystal lattice as charge carriers pass from surface localized, structurally distinct sub-gap polaron states to the free exciton state during up-conversion. Our interpretation is further corroborated by quantifying the impact of ligand coverage on the NC surface. These findings help inform the development of CsPbBr3 NCs for applications in optical refrigeration.
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Affiliation(s)
- Kylie M Lytle
- Department of Chemistry, Texas A&M University, College Station, Texas 77840-7896, United States
| | - Emma L Brass
- Department of Chemistry, University of California Irvine, Irvine, California 92697, United States
| | - Benjamin J Roman
- Department of Chemistry, Texas A&M University, College Station, Texas 77840-7896, United States
| | - Matthew T Sheldon
- Department of Chemistry, Texas A&M University, College Station, Texas 77840-7896, United States
- Department of Chemistry, University of California Irvine, Irvine, California 92697, United States
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3
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Geiregat P, Erdem O, Samoli M, Chen K, Hodgkiss JM, Hens Z. The Impact of Partial Carrier Confinement on Stimulated Emission in Strongly Confined Perovskite Nanocrystals. ACS NANO 2024; 18:17794-17805. [PMID: 38913946 DOI: 10.1021/acsnano.4c03441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Semiconductor lead halide perovskites are excellent candidates for realizing low threshold light amplification due to their tunable and highly efficient luminescence, ease of processing, and strong light-matter interactions. However, most studies on optical gain have addressed bulk films, nanowires, or nanocrystals that exhibit little or no size quantization. Here, we show by means of a multitude of optical spectroscopy methods that small CsPbBr3 nanocrystals (NCs) exhibit a progressive red shift of the band-edge transition upon addition of electron-hole pairs, at least one carrier of which occupies a 2-fold degenerate, delocalized state in agreement with strong confinement. We demonstrate that this combination results in a threshold for biexciton gain, well below the limit of one electron-hole pair on average per NC. On the other hand, both the luminescent lifetime and the optical Stark effect of 4.7 nm CsPbBr3 NCs indicate that the oscillator strength of the band-edge transition is considerably smaller than expected from the band-edge absorption. We assign this discrepancy to a mixed confinement regime, with one delocalized and one localized charge carrier, and show that the concomitant reduction of the oscillator strength for stimulated emission accounts for the surprisingly small material gain observed in small NCs. The conclusion of mixed confinement aligns with studies reporting small and large polarons for holes and electrons in lead halide perovskite nanocrystals, respectively, and creates opportunities for understanding multiexciton photophysics in confined perovskite materials.
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Affiliation(s)
- Pieter Geiregat
- Physics and Chemistry of Nanostructures group, Department of Chemistry, Ghent University, Gent 9000, Belgium
- NOLIMITS, Core Facility for Non-Linear Microscopy and Spectroscopy, Ghent University, Gent, 9000, Belgium
| | - Onur Erdem
- Physics and Chemistry of Nanostructures group, Department of Chemistry, Ghent University, Gent 9000, Belgium
| | - Margarita Samoli
- Physics and Chemistry of Nanostructures group, Department of Chemistry, Ghent University, Gent 9000, Belgium
| | - Kai Chen
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
- The Dodd-Walls Centre for Photonic and Quantum Technologies, University of Otago, Dunedin 9016, New Zealand
- Robinson Research Institute, Faculty of Engineering, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Justin M Hodgkiss
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Zeger Hens
- Physics and Chemistry of Nanostructures group, Department of Chemistry, Ghent University, Gent 9000, Belgium
- NOLIMITS, Core Facility for Non-Linear Microscopy and Spectroscopy, Ghent University, Gent, 9000, Belgium
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4
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Kalita D, Nandi P, Sahu P, Schoekel A, van Embden J, Topwal D, Manju U. Dynamic Structural Evolution and Dual Emission Behavior in Hybrid Organic Lead Bromide Perovskites. J Phys Chem Lett 2024; 15:2557-2565. [PMID: 38416012 DOI: 10.1021/acs.jpclett.4c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
The optoelectronic properties of organic lead halide perovskites (OLHPs) strongly depend on their underlying crystal symmetry and dynamics. Here, we exploit temperature-dependent synchrotron powder X-ray diffraction and temperature-dependent photoluminescence to investigate how the subtle structural changes happening in the pure and mixed A-site cation MA1-xFAxPbBr3 (x = 0, 0.5, and 1) systems influences their optoelectronic properties. Diffraction investigations reveal a cubic structure at high temperatures and tetragonal and orthorhombic structures with octahedral distortion at low temperatures. Steady state photoluminescence and time correlated single photon counting study reveals that the dual emission behavior of these OLHPs is due to the direct-indirect band formation. In the orthorhombic phase of MAPbBr3, the indirect band is dominated by self-trapped exciton (STE) emission due to the higher-order lattice distortions of PbBr6 octahedra. Our findings provide a comprehensive explanation of the dual emission behavior of OLHPs while also providing a rationale for previous experimental observations.
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Affiliation(s)
- Dhiman Kalita
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pronoy Nandi
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Puspanjali Sahu
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
| | | | - Joel van Embden
- School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Dinesh Topwal
- Institute of Physics, Bhubaneswar 751005, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Unnikrishnan Manju
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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5
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Gong Y, Yue S, Liang Y, Du W, Bian T, Jiang C, Bao X, Zhang S, Long M, Zhou G, Yin J, Deng S, Zhang Q, Wu B, Liu X. Boosting exciton mobility approaching Mott-Ioffe-Regel limit in Ruddlesden-Popper perovskites by anchoring the organic cation. Nat Commun 2024; 15:1893. [PMID: 38424438 PMCID: PMC10904778 DOI: 10.1038/s41467-024-45740-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Exciton transport in two-dimensional Ruddlesden-Popper perovskite plays a pivotal role for their optoelectronic performance. However, a clear photophysical picture of exciton transport is still lacking due to strong confinement effects and intricate exciton-phonon interactions in an organic-inorganic hybrid lattice. Herein, we present a systematical study on exciton transport in (BA)2(MA)n-1PbnI3n+1 Ruddlesden-Popper perovskites using time-resolved photoluminescence microscopy. We reveal that the free exciton mobilities in exfoliated thin flakes can be improved from around 8 cm2 V-1 s-1 to 280 cm2V-1s-1 by anchoring the soft butyl ammonium cation with a polymethyl methacrylate network at the surface. The mobility of the latter is close to the theoretical limit of Mott-Ioffe-Regel criterion. Combining optical measurements and theoretical studies, it is unveiled that the polymethyl methacrylate network significantly improve the lattice rigidity resulting in the decrease of deformation potential scattering and lattice fluctuation at the surface few layers. Our work elucidates the origin of high exciton mobility in Ruddlesden-Popper perovskites and opens up avenues to regulate exciton transport in two-dimensional materials.
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Affiliation(s)
- Yiyang Gong
- 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
- University of Chinese Academy of Sciences, Beijing, 100049, 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
| | - Yin Liang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P.R. China
| | - Wenna Du
- 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
| | - Tieyuan Bian
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, 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
| | - Xiaotian Bao
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P.R. China
| | - Shuai 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
| | - Mingzhu Long
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P.R. China
| | - Guofu Zhou
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P.R. China
| | - Jun Yin
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P.R. China
| | - Shibin Deng
- Ultrafast Electron Microscopy Laboratory, School of Physics, Nankai University, Tianjin, 300071, P.R. China
- The MOE Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin, 300071, P.R. China
| | - Qing Zhang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P.R. China.
| | - Bo Wu
- 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.
| | - 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.
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6
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Niu G, Jiang J, Wang X, Che L, Sui L, Wu G, Yuan K, Yang X. Time-Resolved Dynamics of Metal Halide Perovskite under High Pressure: Recent Progress and Challenges. J Phys Chem Lett 2024; 15:1623-1635. [PMID: 38306470 DOI: 10.1021/acs.jpclett.3c03548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
Metal halide perovskites have garnered significant attention in the scientific community for their promising applications in optoelectronic devices. The application of pressure engineering, a viable technique, has played a crucial role in substantially improving the optoelectronic characteristics of perovskites. Despite notable progress in understanding ground-state structural changes under high pressure, a comprehensive exploration of excited-state dynamics influencing luminescence remains incomplete. This Perspective delves into recent advances in time-resolved dynamics studies of photoexcited metal halide perovskites under high pressure. With a focus on the intricate interplay between structural alterations and electronic properties, we investigate electron-phonon interactions, carrier transport mechanisms, and the influential roles of self-trapped excitons (STEs) and coherent phonons in luminescence. However, significant challenges persist, notably the need for more advanced measurement techniques and a deeper understanding of the phenomena induced by high pressure in perovskites.
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Affiliation(s)
- Guangming Niu
- Marine Engineering College, Dalian Maritime University, Dalian 116026, P. R. China
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
| | - Jutao Jiang
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Xiaowei Wang
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Li Che
- Department of Physics School of Science, Dalian Maritime University, Dalian 116026, P. R. China
| | - Laizhi Sui
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
| | - Guorong Wu
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
| | - Kaijun Yuan
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
- Hefei National Laboratory, Hefei 230088, China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road, Dalian 116023, P. R. China
- Hefei National Laboratory, Hefei 230088, China
- Department of Chemistry College of Science, Southern University of Science and Technology, Shenzhen 518055, P. R. China
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7
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Dyksik M, Beret D, Baranowski M, Duim H, Moyano S, Posmyk K, Mlayah A, Adjokatse S, Maude DK, Loi MA, Puech P, Plochocka P. Polaron Vibronic Progression Shapes the Optical Response of 2D Perovskites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305182. [PMID: 38072637 PMCID: PMC10870061 DOI: 10.1002/advs.202305182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/23/2023] [Indexed: 02/17/2024]
Abstract
The optical response of 2D layered perovskites is composed of multiple equally-spaced spectral features, often interpreted as phonon replicas, separated by an energy Δ ≃ 12 - 40 meV, depending upon the compound. Here the authors show that the characteristic energy spacing, seen in both absorption and emission, is correlated with a substantial scattering response above ≃ 200 cm-1 (≃ 25 meV) observed in resonant Raman. This peculiar high-frequency signal, which dominates both Stokes and anti-Stokes regions of the scattering spectra, possesses the characteristic spectral fingerprints of polarons. Notably, its spectral position is shifted away from the Rayleigh line, with a tail on the high energy side. The internal structure of the polaron consists of a series of equidistant signals separated by 25-32 cm-1 (3-4 meV), depending upon the compound, forming a polaron vibronic progression. The observed progression is characterized by a large Huang-Rhys factor (S > 6) for all of the 2D layered perovskites investigated here, indicative of a strong charge carrier - lattice coupling. The polaron binding energy spans a range ≃ 20-35 meV, which is corroborated by the temperature-dependent Raman scattering data. The investigation provides a complete understanding of the optical response of 2D layered perovskites via the direct observation of polaron vibronic progression. The understanding of polaronic effects in perovskites is essential, as it directly influences the suitability of these materials for future opto-electronic applications.
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Affiliation(s)
- Mateusz Dyksik
- Department of Experimental PhysicsFaculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclaw50370Poland
| | - Dorian Beret
- CEMES‐UPR8011CNRSUniversity of Toulouse29 rue Jeanne MarvigToulouse31500France
| | - Michal Baranowski
- Department of Experimental PhysicsFaculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclaw50370Poland
| | - Herman Duim
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Sébastien Moyano
- CEMES‐UPR8011CNRSUniversity of Toulouse29 rue Jeanne MarvigToulouse31500France
| | - Katarzyna Posmyk
- Department of Experimental PhysicsFaculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclaw50370Poland
- Laboratoire National des Champs Magnétiques IntensesEMFL, CNRS UPR 3228University Toulouse, University Toulouse 3, INSA‐T, University Grenoble AlpesGrenoble and ToulouseFrance
| | - Adnen Mlayah
- LAASUniversity of ToulouseCNRS, UPS, 7 Avenue du Colonel RocheToulouse31031France
| | - Sampson Adjokatse
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Duncan K. Maude
- Laboratoire National des Champs Magnétiques IntensesEMFL, CNRS UPR 3228University Toulouse, University Toulouse 3, INSA‐T, University Grenoble AlpesGrenoble and ToulouseFrance
| | - Maria Antonietta Loi
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Pascal Puech
- CEMES‐UPR8011CNRSUniversity of Toulouse29 rue Jeanne MarvigToulouse31500France
| | - Paulina Plochocka
- Department of Experimental PhysicsFaculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclaw50370Poland
- Laboratoire National des Champs Magnétiques IntensesEMFL, CNRS UPR 3228University Toulouse, University Toulouse 3, INSA‐T, University Grenoble AlpesGrenoble and ToulouseFrance
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8
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Subagyo R, Maulida PYD, Kowal D, Hartati S, Muslimawati RM, Zetra Y, Diguna LJ, Akhlus S, Mahyuddin MH, Zhang L, Tang CS, Diao C, Wee ATS, Birowosuto MD, Arramel, Rusydi A, Kusumawati Y. Spectroscopic Evidence of Localized Small Polarons in Low-Dimensional Ionic Liquid Lead-Free Hybrid Perovskites. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54677-54691. [PMID: 37966967 DOI: 10.1021/acsami.3c12889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Rational design is an important approach to consider in the development of low-dimensional hybrid organic-inorganic perovskites (HOIPs). In this study, 1-butyl-1-methyl pyrrolidinium (BMP), 1-(3-aminopropyl)imidazole (API), and 1-butyl-3-methyl imidazolium (BMI) serve as prototypical ionic liquid components in bismuth-based HOIPs. Element-sensitive X-ray absorption spectroscopy measurements of BMPBiBr4 and APIBiBr5 reveal distinct resonant excitation profiles across the N K-edges, where contrasting peak shifts are observed. These 1D-HOIPs exhibit a large Stokes shift due to the small polaron contribution, as probed by photoluminescence spectroscopy at room temperature. Interestingly, the incorporation of a small fraction of tin (Sn) into the APIBiBr5 (Sn/Bi mole ratio of 1:3) structure demonstrates a strong spectral weight transfer accompanied by a fast decay lifetime (2.6 ns). These phenomena are the direct result of Sn-substitution in APIBiBr5, decreasing the small polaron effect. By changing the active ionic liquid, the electronic interactions and optical responses can be moderately tuned by alteration of their intermolecular interaction between the semiconducting inorganic layers and organic moieties.
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Affiliation(s)
- Riki Subagyo
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, Sukolilo, Surabaya 60111, Indonesia
| | | | - Dominik Kowal
- Łukasiewicz Research Network─PORT Polish Center for Technology Development, Stabłowicka 147, Wrocław 54-066, Poland
| | - Sri Hartati
- Nano Center Indonesia, Jl PUSPIPTEK, South Tangerang, Banten 15314, Indonesia
| | - Rossyaila M Muslimawati
- Doctoral Program of Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
- Quantum and Nano Technology Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Yulfi Zetra
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, Sukolilo, Surabaya 60111, Indonesia
| | - Lina J Diguna
- Department of Renewable Energy Engineering, Universitas Prasetiya Mulya, Kavling Edutown I.1, Jl. BSD Raya Utama, BSD City, Tangerang 15339, Indonesia
| | - Syafsir Akhlus
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, Sukolilo, Surabaya 60111, Indonesia
| | - Muhammad H Mahyuddin
- Quantum and Nano Technology Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Lei Zhang
- Department of Physics, National University of Singapore, Singapore 117551, Singapore
| | - Chi S Tang
- Singapore Synchrotron Light Source (SSLS), National University of Singapore, Singapore 117603, Singapore
| | - Caozheng Diao
- Singapore Synchrotron Light Source (SSLS), National University of Singapore, Singapore 117603, Singapore
| | - Andrew T S Wee
- Department of Physics, National University of Singapore, Singapore 117551, Singapore
| | - Muhammad D Birowosuto
- Łukasiewicz Research Network─PORT Polish Center for Technology Development, Stabłowicka 147, Wrocław 54-066, Poland
| | - Arramel
- Nano Center Indonesia, Jl PUSPIPTEK, South Tangerang, Banten 15314, Indonesia
| | - Andrivo Rusydi
- Department of Physics, National University of Singapore, Singapore 117551, Singapore
- Singapore Synchrotron Light Source (SSLS), National University of Singapore, Singapore 117603, Singapore
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456, Singapore
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore
| | - Yuly Kusumawati
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, Sukolilo, Surabaya 60111, Indonesia
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9
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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.
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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
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10
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Ravali V, Ghosh T. Charge carrier dynamics and transient spectral evolutions in lead halide perovskites. Chem Commun (Camb) 2023; 59:13939-13950. [PMID: 37934456 DOI: 10.1039/d3cc04297a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Lead halide perovskites (LHPs) have emerged as promising materials for solar cell applications due to their unique photophysical properties. Most of the crucial properties related to solar cell performance such as carrier mobility, diffusion length, recombination rates, etc. have been estimated using ultrafast spectroscopic methods. While various methods have been developed to prepare and fabricate high-quality perovskite films for photovoltaic applications, understanding the charge carrier dynamics is also crucial at each stage of the charge generation, cooling, and recombination processes. Using femtosecond (fs) transient absorption (TA) spectroscopy, various stages of charge carrier dynamics in perovskite materials could be monitored. In this article, we focus on some of the recent experimental developments related to charge carrier dynamics in perovskites and discuss the current understanding of (1) exciton dissociation, (2) charge carrier thermalization, (3) hot carrier cooling, and (4) electron-phonon coupling along with some of the crucial spectral emergence in the pump-probe experiments of LHP materials.
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Affiliation(s)
- Vanga Ravali
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, Amaravati, Andhra Pradesh, 522237, India.
| | - Tufan Ghosh
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, Amaravati, Andhra Pradesh, 522237, India.
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11
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Ren Z, Shi Z, Feng H, Xu Z, Hao W. Recent Progresses of Polarons: Fundamentals and Roles in Photocatalysis and Photoelectrocatalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2305139. [PMID: 37949811 DOI: 10.1002/advs.202305139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/21/2023] [Indexed: 11/12/2023]
Abstract
Photocatalysis and photoelectrocatalysis are promising ways in the utilization of solar energy. To address the low efficiency of photocatalysts and photoelectrodes, in-depth understanding of their catalytic mechanism is in urgent need. Recently, polaron is considered as an influential factor in catalysis, which brings researchers a new approach to modify photocatalysts and photoelectrodes. In this review, brief introduction of polaron is given first, followed by which models and recent experimentally observations of polarons are reviewed. Studies about roles of polarons in photocatalysis and photoelectrocatalysis are listed in order to provide some inspiration in exploring the mechanism and improving the efficiency of photocatalysis and photoelectrocatalysis.
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Affiliation(s)
- Zhizhen Ren
- School of Physics, Beihang University, Beijing, 100191, China
| | - Zhijian Shi
- School of Physics, Beihang University, Beijing, 100191, China
| | - Haifeng Feng
- School of Physics, Beihang University, Beijing, 100191, China
| | - Zhongfei Xu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Weichang Hao
- School of Physics, Beihang University, Beijing, 100191, China
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12
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Simbula A, Wu L, Pitzalis F, Pau R, Lai S, Liu F, Matta S, Marongiu D, Quochi F, Saba M, Mura A, Bongiovanni G. Exciton dissociation in 2D layered metal-halide perovskites. Nat Commun 2023; 14:4125. [PMID: 37433858 DOI: 10.1038/s41467-023-39831-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 06/29/2023] [Indexed: 07/13/2023] Open
Abstract
Layered 2D perovskites are making inroads as materials for photovoltaics and light emitting diodes, but their photophysics is still lively debated. Although their large exciton binding energies should hinder charge separation, significant evidence has been uncovered for an abundance of free carriers among optical excitations. Several explanations have been proposed, like exciton dissociation at grain boundaries or polaron formation, without clarifying yet if excitons form and then dissociate, or if the formation is prevented by competing relaxation processes. Here we address exciton stability in layered Ruddlesden-Popper PEA2PbI4 (PEA stands for phenethylammonium) both in form of thin film and single crystal, by resonant injection of cold excitons, whose dissociation is then probed with femtosecond differential transmission. We show the intrinsic nature of exciton dissociation in 2D layered perovskites, demonstrating that both 2D and 3D perovskites are free carrier semiconductors and their photophysics is described by a unique and universal framework.
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Affiliation(s)
- Angelica Simbula
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy.
| | - Luyan Wu
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Federico Pitzalis
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Riccardo Pau
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 09747, AG, Groningen, The Netherlands
| | - Stefano Lai
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Fang Liu
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Selene Matta
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Daniela Marongiu
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Francesco Quochi
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Michele Saba
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy.
| | - Andrea Mura
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
| | - Giovanni Bongiovanni
- Dipartimento di Fisica, Università degli Studi di Cagliari, Monserrato, CA, I-09042, Italy
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13
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Frenzel M, Cherasse M, Urban JM, Wang F, Xiang B, Nest L, Huber L, Perfetti L, Wolf M, Kampfrath T, Zhu XY, Maehrlein SF. Nonlinear terahertz control of the lead halide perovskite lattice. SCIENCE ADVANCES 2023; 9:eadg3856. [PMID: 37224256 DOI: 10.1126/sciadv.adg3856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/18/2023] [Indexed: 05/26/2023]
Abstract
Lead halide perovskites (LHPs) have emerged as an excellent class of semiconductors for next-generation solar cells and optoelectronic devices. Tailoring physical properties by fine-tuning the lattice structures has been explored in these materials by chemical composition or morphology. Nevertheless, its dynamic counterpart, phonon-driven ultrafast material control, as contemporarily harnessed for oxide perovskites, has not yet been established. Here, we use intense THz electric fields to obtain direct lattice control via nonlinear excitation of coherent octahedral twist modes in hybrid CH3NH3PbBr3 and all-inorganic CsPbBr3 perovskites. These Raman-active phonons at 0.9 to 1.3 THz are found to govern the ultrafast THz-induced Kerr effect in the low-temperature orthorhombic phase and thus dominate the phonon-modulated polarizability with potential implications for dynamic charge carrier screening beyond the Fröhlich polaron. Our work opens the door to selective control of LHP's vibrational degrees of freedom governing phase transitions and dynamic disorder.
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Affiliation(s)
- Maximilian Frenzel
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
| | - Marie Cherasse
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
- LSI, CEA/DRF/IRAMIS, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Joanna M Urban
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
| | - Feifan Wang
- Department of Chemistry, Columbia University, New York City, NY, USA
| | - Bo Xiang
- Department of Chemistry, Columbia University, New York City, NY, USA
| | - Leona Nest
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
| | - Lucas Huber
- Department of Chemistry, Columbia University, New York City, NY, USA
| | - Luca Perfetti
- LSI, CEA/DRF/IRAMIS, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Martin Wolf
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
| | - Tobias Kampfrath
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
- Freie Universität Berlin, Berlin, Germany
| | - X-Y Zhu
- Department of Chemistry, Columbia University, New York City, NY, USA
| | - Sebastian F Maehrlein
- Fritz Haber Institute of the Max Planck Society, Department of Physical Chemistry, Berlin, Germany
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14
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Gunnarsson WB, Roh K, Zhao L, Murphy JP, Grede AJ, Giebink NC, Rand BP. Toward Nonepitaxial Laser Diodes. Chem Rev 2023. [PMID: 37219995 DOI: 10.1021/acs.chemrev.2c00721] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Thin-film organic, colloidal quantum dot, and metal halide perovskite semiconductors are all being pursued in the quest for a wavelength-tunable diode laser technology that does not require epitaxial growth on a traditional semiconductor substrate. Despite promising demonstrations of efficient light-emitting diodes and low-threshold optically pumped lasing in each case, there are still fundamental and practical barriers that must be overcome to reliably achieve injection lasing. This review outlines the historical development and recent advances of each material system on the path to a diode laser. Common challenges in resonator design, electrical injection, and heat dissipation are highlighted, as well as the different optical gain physics that make each system unique. The evidence to date suggests that continued progress for organic and colloidal quantum dot laser diodes will likely hinge on the development of new materials or indirect pumping schemes, while improvements in device architecture and film processing are most critical for perovskite lasers. In all cases, systematic progress will require methods that can quantify how close new devices get with respect to their electrical lasing thresholds. We conclude by discussing the current status of nonepitaxial laser diodes in the historical context of their epitaxial counterparts, which suggests that there is reason to be optimistic for the future.
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Affiliation(s)
- William B Gunnarsson
- Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Kwangdong Roh
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Lianfeng Zhao
- Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - John P Murphy
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Alex J Grede
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Noel C Giebink
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Barry P Rand
- Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States
- Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States
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15
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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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16
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Leonard AA, Diroll BT, Flanders NC, Panuganti S, Brumberg A, Kirschner MS, Cuthriell SA, Harvey SM, Watkins NE, Yu J, Wasielewski MR, Kanatzidis MG, Dichtel WR, Zhang X, Chen LX, Schaller RD. Light-Induced Transient Lattice Dynamics and Metastable Phase Transition in CH 3NH 3PbI 3 Nanocrystals. ACS NANO 2023; 17:5306-5315. [PMID: 36916650 DOI: 10.1021/acsnano.2c06950] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Methylammonium lead iodide (MAPbI3) perovskite nanocrystals (NCs) offer desirable optoelectronic properties with prospective utility in photovoltaics, lasers, and light-emitting diodes (LEDs). Structural rearrangements of MAPbI3 in response to photoexcitation, such as lattice distortions and phase transitions, are of particular interest, as these engender long carrier lifetime and bolster carrier diffusion. Here, we use variable temperature X-ray diffraction (XRD) and synchrotron-based transient X-ray diffraction (TRXRD) to investigate lattice response following ultrafast optical excitation. MAPbI3 NCs are found to slowly undergo a phase transition from the tetragonal to a pseudocubic phase over the course of 1 ns under 0.02-4.18 mJ/cm2 fluence photoexcitation, with apparent nonthermal lattice distortions attributed to polaron formation. Lattice recovery exceeds time scales expected for both carrier recombination and thermal dissipation, indicating meta-stability likely due to the proximal phase transition, with symmetry-breaking along equatorial and axial directions. These findings are relevant for fundamental understanding and applications of structure-function properties.
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Affiliation(s)
- Ariel A Leonard
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Benjamin T Diroll
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Nathan C Flanders
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Shobhana Panuganti
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Alexandra Brumberg
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Matthew S Kirschner
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Shelby A Cuthriell
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Samantha M Harvey
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Nicolas E Watkins
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jin Yu
- X-ray Sciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - William R Dichtel
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xiaoyi Zhang
- X-ray Sciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Lin X Chen
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Richard D Schaller
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
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17
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Dirin DN, Vivani A, Zacharias M, Sekh TV, Cherniukh I, Yakunin S, Bertolotti F, Aebli M, Schaller RD, Wieczorek A, Siol S, Cancellieri C, Jeurgens LPH, Masciocchi N, Guagliardi A, Pedesseau L, Even J, Kovalenko MV, Bodnarchuk MI. Intrinsic Formamidinium Tin Iodide Nanocrystals by Suppressing the Sn(IV) Impurities. NANO LETTERS 2023; 23:1914-1923. [PMID: 36852730 PMCID: PMC9999454 DOI: 10.1021/acs.nanolett.2c04927] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/16/2023] [Indexed: 06/18/2023]
Abstract
The long search for nontoxic alternatives to lead halide perovskites (LHPs) has shown that some compelling properties of LHPs, such as low effective masses of carriers, can only be attained in their closest Sn(II) and Ge(II) analogues, despite their tendency toward oxidation. Judicious choice of chemistry allowed formamidinium tin iodide (FASnI3) to reach a power conversion efficiency of 14.81% in photovoltaic devices. This progress motivated us to develop a synthesis of colloidal FASnI3 NCs with a concentration of Sn(IV) reduced to an insignificant level and to probe their intrinsic structural and optical properties. Intrinsic FASnI3 NCs exhibit unusually low absorption coefficients of 4 × 103 cm-1 at the first excitonic transition, a 190 meV increase of the band gap as compared to the bulk material, and a lack of excitonic resonances. These features are attributed to a highly disordered lattice, distinct from the bulk FASnI3 as supported by structural characterizations and first-principles calculations.
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Affiliation(s)
- Dmitry N. Dirin
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Anna Vivani
- Dipartimento
di Scienza e Alta Tecnologia & To.Sca.Lab, Università dell’Insubria, 22100 Como, Italy
| | - Marios Zacharias
- Univ
Rennes, INSA Rennes, CNRS, Institut FOTON, Rennes F-35000, France
| | - Taras V. Sekh
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Ihor Cherniukh
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Sergii Yakunin
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Federica Bertolotti
- Dipartimento
di Scienza e Alta Tecnologia & To.Sca.Lab, Università dell’Insubria, 22100 Como, Italy
| | - Marcel Aebli
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Richard D. Schaller
- Center
for Nanoscale Materials, Argonne National
Laboratory, Lemont, Illinois 60439, United
States
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alexander Wieczorek
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Sebastian Siol
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Claudia Cancellieri
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Lars P. H. Jeurgens
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Norberto Masciocchi
- Dipartimento
di Scienza e Alta Tecnologia & To.Sca.Lab, Università dell’Insubria, 22100 Como, Italy
| | - Antonietta Guagliardi
- Istituto
di Cristallografia & To.Sca.Lab, Consiglio
Nazionale delle Ricerche, 22100 Como, Italy
| | - Laurent Pedesseau
- Univ
Rennes, INSA Rennes, CNRS, Institut FOTON, Rennes F-35000, France
| | - Jacky Even
- Univ
Rennes, INSA Rennes, CNRS, Institut FOTON, Rennes F-35000, France
| | - Maksym V. Kovalenko
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Maryna I. Bodnarchuk
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
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18
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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.
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19
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Liu YY, Cui Y, Cai CY, Deng JP, Li ZQ, Wang ZW. Polaron states of the full-configuration defects in metal halide perovskites. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:125702. [PMID: 36657176 DOI: 10.1088/1361-648x/acb4ce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
The systematical analysis for varieties of defects with different depths and lattice relaxation strengths in metal halide perovskites (MHPs) is a challenging task. Here, we study the energy shifts of the full-configuration defects due to the polaron effect based on the all-coupling variational method in MHPs, where these polaron states are formed stemming from different defect species coupling with the longitudinal optical phonon modes via Fro¨hlich mechanism. We find that the polaron effect results in defect levels varying from tens to several hundreds of meV, which are very close to the correction of defect levels due to the defect-polaron effect, especially for these defects migration proved in the recent experiments in MHPs. These results provide the significant enlightenment not only for analyzing the radiation and non-radiation processes of carriers mediated by defects, but also for optimizing defect effect in the photovoltaic and photoelectric devices based on MHPs materials.
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Affiliation(s)
- Yi-Yan Liu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Department of Physics, School of Science, Tianjin University, Tianjin 300354, People's Republic of China
| | - Yu Cui
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Department of Physics, School of Science, Tianjin University, Tianjin 300354, People's Republic of China
| | - Chun-Yu Cai
- Institute of Condensed Matter Physics, Inner Mongolia Minzu University, Tongliao 028043, People's Republic of China
| | - Jia-Pei Deng
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Department of Physics, School of Science, Tianjin University, Tianjin 300354, People's Republic of China
| | - Zhi-Qing Li
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Department of Physics, School of Science, Tianjin University, Tianjin 300354, People's Republic of China
| | - Zi-Wu Wang
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Department of Physics, School of Science, Tianjin University, Tianjin 300354, People's Republic of China
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20
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Tailor NK, Saini SK, Yadav P, Kumar M, Satapathi S. Elucidating Polaron Dynamics in Cs 2AgBiBr 6 Double Perovskite. J Phys Chem Lett 2023; 14:730-736. [PMID: 36649028 DOI: 10.1021/acs.jpclett.2c03541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Lead-free Cs2AgBiBr6 double perovskites have recently emerged as a possible alternative to lead-based halide perovskites for photovoltaic and optoelectronic applications. Significant research efforts have been devoted toward device engineering to enhance the performance of Cs2AgBiBr6 double-perovskite-based photovoltaic and optoelectronic devices; however, less attention has been paid to address their intrinsic photophysical properties. In this work, we have shown that the small polaron formation under photoexcitation and polaron localization limits the carrier dynamics in Cs2AgBiBr6 double halide perovskites. Furthermore, temperature-dependent ac conductivity measurement reveals that single polaron hopping is the dominant conduction mechanism. Ultrafast transient absorption spectroscopy reveals that a deformed lattice under photoexcitation leads to the formation of small polarons which act as self-trapped states (STSs) and lead to the ultrafast trapping of charge carriers. Our findings provide an in-depth understanding of intrinsic limitations of Cs2AgBiBr6 perovskites, which can be applicable for other bismuth-based semiconductors.
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Affiliation(s)
- Naveen Kumar Tailor
- Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand247667, India
| | - Saurabh K Saini
- National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi110012, India
| | - Pankaj Yadav
- Department of Solar Energy, School of Technology, Pandit Deendayal Energy University, Gandhinagar382 007, Gujarat, India
| | - Mahesh Kumar
- National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi110012, India
| | - Soumitra Satapathi
- Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand247667, India
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21
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Shi R, Guo M, Long R. Improved Defect Tolerance and Charge Carrier Lifetime in Tin-Lead Mixed Perovskites: Ab Initio Quantum Dynamics. J Phys Chem Lett 2023; 14:499-507. [PMID: 36625793 DOI: 10.1021/acs.jpclett.2c03649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Simulations by nonadiabatic (NA) molecular dynamics demonstrate that mixing tin with lead in CH3NH3PbI3 can passivate the midgap state created by an interstitial iodine (Ii) via the imposed compressive strain and upshifted valence band maximum, reduce NA coupling by decreasing electron-hole wave functions overlap, and shortens pure-dephasing time by introducing high-frequency phonon modes. Thus, the charge carrier lifetime extends to 3.6 ns due to the significantly reduced nonradiative electron-hole recombination, which is an order of magnitude longer than the Ii-containing CH3NH3PbI3, over 2.5 times longer than the pristine CH3NH3PbI3 (1.4 ns), and even 1.7 times longer than the tin-lead mixed perovskite without the Ii defects (2.1 ns). Tin-lead alloying simultaneously increases the Ii defect formation energy to 0.402 eV from 0.179 eV in CH3NH3PbI3, which effectively enhances defect tolerance by reducing the defect concentration. The study reveals the factors controlling the enhanced performance of tin-lead mixed perovskite solar cells.
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Affiliation(s)
- Ran Shi
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China
| | - Meng Guo
- Shandong Computer Science Center (National Supercomputer Centre in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250013, P. R. China
- Jinan Institute of Supercomputing Technology, Jinan, Shandong 250103, P. R. China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China
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22
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Suh BL, Kang G, Yoon SM, Cho S, Moon MW, Sung YM, Kim MS, Hur K. Dimensional Control of Highly Anisotropic and Transparent Conductive Coordination Polymers for Solution-Processable Large-Scale 2D Sheets. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206980. [PMID: 36271591 DOI: 10.1002/adma.202206980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/25/2022] [Indexed: 06/16/2023]
Abstract
Controlling the dimensional aspect of conductive coordination polymers is currently a key scientific interest. Herein, solution-based dimension control strategies are proposed for copper chloride thiourea (CuCl-TU) coordination polymers that enable centimeter-scale, 2D nanosheet formation for use as transparent electrodes. Despite the wide bandgap of CuCl-TU polymers (4.33 eV), through polaron-mediated electron transfer, the electrical conductivity of the 2D sheet at room temperature is able to reach 4.45 S cm-1 without intentional doping. This leads to a highly anisotropic electronic conductivity of up to the order of ≈103 differences, depending on the material orientation. Furthermore, by substituting alternative thiourea candidates, it is demonstrated that it is possible to predesign CuCl-TU structures with the desired functionality, stability, and porosity through dimensional control. These findings provide a blueprint to design next-generation transparent conducting materials that can operate at room temperature, thereby expanding their applicability to different fields.
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Affiliation(s)
- Bong Lim Suh
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Goun Kang
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- Department of Material Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Sun Mi Yoon
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Sanghyun Cho
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Myoung-Woon Moon
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Yun-Mo Sung
- Department of Material Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Min-Seok Kim
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Kahyun Hur
- Extreme Materials Research Center, Advanced Materials Research Division, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
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23
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Han Y, Cheng X, Cui BB. Factors influencing self-trapped exciton emission of low-dimensional metal halides. MATERIALS ADVANCES 2023; 4:355-373. [DOI: 10.1039/d2ma00676f] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
In this review, we mainly summarized the structure distortion, molecular engineering, electron–phonon coupling effect, external temperature and pressure, and metal ion doping that influence the self-trapped exciton emission of low-dimensional metal halides (LDMHs).
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Affiliation(s)
- Ying Han
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology (BIT), Beijing 100081, P. R. China
- School of Chemistry and Chemical Engineering, BIT, Beijing 100081, P. R. China
| | - Xiaohua Cheng
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology (BIT), Beijing 100081, P. R. China
- School of Chemistry and Chemical Engineering, BIT, Beijing 100081, P. R. China
| | - Bin-Bin Cui
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology (BIT), Beijing 100081, P. R. China
- School of Chemistry and Chemical Engineering, BIT, Beijing 100081, P. R. China
- School of Materials Science and Engineering, BIT, Beijing 100081, P. R. China
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24
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A universal all-solid synthesis for high throughput production of halide perovskite. Nat Commun 2022; 13:7399. [PMID: 36456593 PMCID: PMC9715688 DOI: 10.1038/s41467-022-35122-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 11/18/2022] [Indexed: 12/04/2022] Open
Abstract
Halide perovskites show ubiquitous presences in growing fields at both fundamental and applied levels. Discovery, investigation, and application of innovative perovskites are heavily dependent on the synthetic methodology in terms of time-/yield-/effort-/energy- efficiency. Conventional wet chemistry method provides the easiness for growing thin film samples, but represents as an inefficient way for bulk crystal synthesis. To overcome these, here we report a universal solid state-based route for synthesizing high-quality perovskites, by means of simultaneously applying both electric and mechanical stress fields during the synthesis, i.e., the electrical and mechanical field-assisted sintering technique. We employ various perovskite compositions and arbitrary geometric designs for demonstration in this report, and establish such synthetic route with uniqueness of ultrahigh yield, fast processing and solvent-free nature, along with bulk products of exceptional quality approaching to single crystals. We exemplify the applications of the as-synthesized perovskites in photodetection and thermoelectric as well as other potentials to open extra chapters for future technical development.
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25
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Afshari H, Durant BK, Kirmani AR, Chacon SA, Mahoney J, Whiteside VR, Scheidt RA, Beard MC, Luther JM, Sellers IR. Temperature-Dependent Carrier Extraction and the Effects of Excitons on Emission and Photovoltaic Performance in Cs 0.05FA 0.79MA 0.16Pb(I 0.83Br 0.17) 3 Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44358-44366. [PMID: 36150132 DOI: 10.1021/acsami.2c11657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The photovoltaic parameters of triple cation perovskite [Cs0.05FA0.79MA0.16Pb(I0.83Br0.17)3] solar cells are investigated focusing on the electro-optical properties and differences in performance at low and high temperatures. The signature of a parasitic barrier to carrier extraction is observed at low temperatures, which results in a loss of performance at T < 200 K. Intensity-dependent measurements indicate extraction across this parasitic interface is limited by a combination of the exciton binding energy and thermionic emission. However, the photovoltaic performance of the device is recovered at low intensity─where the photocarrier generation rate threshold is lower than the thermionic extraction rate. Loss of solar cell performance is also observed to be strongly correlated to an increase in photoluminescence intensity, indicating inhibited carrier extraction results in strong radiative recombination and that these systems do not appear to be limited by significant thermally activated non-radiative processes. Evidence of limited carrier extraction due to excitonic effects is also observed with a strong anti-correlation in photoluminescence and carrier extraction observed at lower temperatures.
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Affiliation(s)
- Hadi Afshari
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
| | - Brandon K Durant
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
| | - Ahmad R Kirmani
- National Renewable Energy Laboratory (NREL), Golden 80401, Colorado, United States
| | - Sergio A Chacon
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
| | - John Mahoney
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
| | - Vincent R Whiteside
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
| | - Rebecca A Scheidt
- National Renewable Energy Laboratory (NREL), Golden 80401, Colorado, United States
| | - Matthew C Beard
- National Renewable Energy Laboratory (NREL), Golden 80401, Colorado, United States
| | - Joseph M Luther
- National Renewable Energy Laboratory (NREL), Golden 80401, Colorado, United States
| | - Ian R Sellers
- Department of Physics & Astronomy, University of Oklahoma, Norman 73019, Oklahoma, United States
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26
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Ambrosio F, De Angelis F, Goñi AR. The Ferroelectric-Ferroelastic Debate about Metal Halide Perovskites. J Phys Chem Lett 2022; 13:7731-7740. [PMID: 35969174 PMCID: PMC9421894 DOI: 10.1021/acs.jpclett.2c01945] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/11/2022] [Indexed: 05/19/2023]
Abstract
Metal halide perovskites (MHPs) are solution-processed materials with exceptional photoconversion efficiencies that have brought a paradigm shift in photovoltaics. The nature of the peculiar optoelectronic properties underlying such astounding performance is still controversial. The existence of ferroelectricity in MHPs and its alleged impact on photovoltaic activity have fueled an intense debate, in which unanimous consensus is still far from being reached. Here we critically review recent experimental and theoretical results with a two-fold objective: we argue that the occurrence of ferroelectric domains is incompatible with the A-site cation dynamics in MHPs and propose an alternative interpretation of the experiments based on the concept of ferroelasticity. We further underline that ferroic behavior in MHPs would not be relevant at room temperature or higher for the physics of photogenerated charge carriers, since it would be overshadowed by competing effects like polaron formation and ion migration.
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Affiliation(s)
- Francesco Ambrosio
- Computational
Laboratory for Hybrid/Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta”
(CNR-SCITEC), Via Elce
di Sotto 8, 06123 Perugia, Italy
- Department
of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno Italy
- Center
for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133 Milano, Italy
| | - Filippo De Angelis
- Computational
Laboratory for Hybrid/Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta”
(CNR-SCITEC), Via Elce
di Sotto 8, 06123 Perugia, Italy
- Center
for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133 Milano, Italy
- Department
of Chemistry, Biology and Biotechnology, University of Perugia and UdR INSTM of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
- Department
of Natural Sciences & Mathematics, College of Sciences & Human
Studies, Prince Mohammad Bin Fahd University, Al Khobar 31952, Saudi Arabia
| | - Alejandro R. Goñi
- Institut
de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
- ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
- E-mail:
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27
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Ten Brink M, Gräber S, Hopjan M, Jansen D, Stolpp J, Heidrich-Meisner F, Blöchl PE. Real-time non-adiabatic dynamics in the one-dimensional Holstein model: Trajectory-based vs exact methods. J Chem Phys 2022; 156:234109. [PMID: 35732530 DOI: 10.1063/5.0092063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We benchmark a set of quantum-chemistry methods, including multitrajectory Ehrenfest, fewest-switches surface-hopping, and multiconfigurational-Ehrenfest dynamics, against exact quantum-many-body techniques by studying real-time dynamics in the Holstein model. This is a paradigmatic model in condensed matter theory incorporating a local coupling of electrons to Einstein phonons. For the two-site and three-site Holstein model, we discuss the exact and quantum-chemistry methods in terms of the Born-Huang formalism, covering different initial states, which either start on a single Born-Oppenheimer surface, or with the electron localized to a single site. For extended systems with up to 51 sites, we address both the physics of single Holstein polarons and the dynamics of charge-density waves at finite electron densities. For these extended systems, we compare the quantum-chemistry methods to exact dynamics obtained from time-dependent density matrix renormalization group calculations with local basis optimization (DMRG-LBO). We observe that the multitrajectory Ehrenfest method, in general, only captures the ultrashort time dynamics accurately. In contrast, the surface-hopping method with suitable corrections provides a much better description of the long-time behavior but struggles with the short-time description of coherences between different Born-Oppenheimer states. We show that the multiconfigurational Ehrenfest method yields a significant improvement over the multitrajectory Ehrenfest method and can be converged to the exact results in small systems with moderate computational efforts. We further observe that for extended systems, this convergence is slower with respect to the number of configurations. Our benchmark study demonstrates that DMRG-LBO is a useful tool for assessing the quality of the quantum-chemistry methods.
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Affiliation(s)
- M Ten Brink
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - S Gräber
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - M Hopjan
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - D Jansen
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - J Stolpp
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - F Heidrich-Meisner
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - P E Blöchl
- Institut für Theoretische Physik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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28
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Perez CM, Ghosh D, Prezhdo O, Nie W, Tretiak S, Neukirch A. Point Defects in Two-Dimensional Ruddlesden-Popper Perovskites Explored with Ab Initio Calculations. J Phys Chem Lett 2022; 13:5213-5219. [PMID: 35670577 DOI: 10.1021/acs.jpclett.2c00575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional Ruddlesden-Popper (RP) halide perovskites stand out as excellent layered materials with favorable optoelectronic properties for efficient light-emitting, spintronic, and other spin-related applications. However, properties often determined by defects are not well understood in these perovskite systems. This work investigates the ground state electronic structure of commonly formed defects in a typical RP perovskite structure by density functional theory. Our study reveals that these 2D perovskites generally retain their defect tolerance with limited perturbation of the electronic structure in the case of neutral-type point defects. In contrast, donor/acceptor defects induce deep midgap states, potentially causing harm to the material's electronic performance. To retain positive intrinsic properties, the halide vacancies and interstitial defects should be avoided. The observed strong electron localization results in trap states and consequently leads to reduced device performance. This understanding can guide experimental efforts that aim for improved 2D halide perovskite-based device performance.
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Affiliation(s)
- Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Dibyajyoti Ghosh
- Department of Material Science and Engineering and Department of Chemistry, Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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29
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Sajedi M, Krivenkov M, Marchenko D, Sánchez-Barriga J, Chandran AK, Varykhalov A, Rienks EDL, Aguilera I, Blügel S, Rader O. Is There a Polaron Signature in Angle-Resolved Photoemission of CsPbBr_{3}? PHYSICAL REVIEW LETTERS 2022; 128:176405. [PMID: 35570464 DOI: 10.1103/physrevlett.128.176405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 11/19/2021] [Accepted: 03/17/2022] [Indexed: 06/15/2023]
Abstract
The formation of large polarons has been proposed as reason for the high defect tolerance, low mobility, low charge carrier trapping, and low nonradiative recombination rates of lead halide perovskites. Recently, direct evidence for large-polaron formation has been reported from a 50% effective mass enhancement in angle-resolved photoemission of CsPbBr_{3} over theory for the orthorhombic structure. We present in-depth band dispersion measurements of CsPbBr_{3} and GW calculations, which lead to similar effective masses at the valence band maximum of 0.203±0.016 m_{0} in experiment and 0.226 m_{0} in orthorhombic theory. We argue that the effective mass can be explained solely on the basis of electron-electron correlation and large-polaron formation cannot be concluded from photoemission data.
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Affiliation(s)
- Maryam Sajedi
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24/25, 14476 Potsdam, Germany
| | - Maxim Krivenkov
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Dmitry Marchenko
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Jaime Sánchez-Barriga
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Anoop K Chandran
- Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
- Department of Physics, RWTH Aachen University, 52056 Aachen, Germany
| | - Andrei Varykhalov
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Emile D L Rienks
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Irene Aguilera
- Institute of Energy and Climate Research, IEK-5 Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Stefan Blügel
- Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
| | - Oliver Rader
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
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30
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Reticcioli M, Diebold U, Franchini C. Modeling polarons in density functional theory: lessons learned from TiO 2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:204006. [PMID: 35213845 DOI: 10.1088/1361-648x/ac58d7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Density functional theory (DFT) is nowadays one of the most broadly used and successful techniques to study the properties of polarons and their effects in materials. Here, we systematically analyze the aspects of the theoretical calculations that are crucial to obtain reliable predictions in agreement with the experimental observations. We focus on rutile TiO2, a prototypical polaronic compound, and compare the formation of polarons on the (110) surface and subsurface atomic layers. As expected, the parameterUused to correct the electronic correlation in the DFT +Uformalism affects the resulting charge localization, local structural distortions and electronic properties of polarons. Moreover, the polaron localization can be driven to different sites by strain: due to different local environments, surface and subsurface polarons show different responses to the applied strain, with impact on the relative energy stability. An accurate description of the properties of polarons is key to understand their impact on complex phenomena and applications: as an example, we show the effects of lattice strain on the interaction between polarons and CO adsorbates.
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Affiliation(s)
- Michele Reticcioli
- University of Vienna, Faculty of Physics, Center for Computational Materials Science, Vienna, Austria
| | - Ulrike Diebold
- Institute of Applied Physics, Technische Universität Wien, Vienna, Austria
| | - Cesare Franchini
- University of Vienna, Faculty of Physics, Center for Computational Materials Science, Vienna, Austria
- Dipartimento di Fisica e Astronomia, Università di Bologna, 40127 Bologna, Italy
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31
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Maiti A, Pal AJ. Carrier recombination in CH 3NH 3PbI 3: why is it a slow process? REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2022; 85:024501. [PMID: 35038679 DOI: 10.1088/1361-6633/ac4be9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
In methylammonium lead iodide (MAPbI3), a slow recombination process of photogenerated carriers has often been considered to be the most intriguing property of the material resulting in high-efficiency perovskite solar cells. In spite of intense research over a decade or so, a complete understanding of carrier recombination dynamics in MAPbI3has remained inconclusive. In this regard, several microscopic processes have been proposed so far in order to explain the slow recombination pathways (both radiative and non-radiative), such as the existence of shallow defects, a weak electron-phonon coupling, presence of ferroelectric domains, screening of band-edge charges through the formation of polarons, occurrence of the Rashba splitting in the band(s), and photon-recycling in the material. Based on the up-to-date findings, we have critically assessed each of these proposals/models to shed light on the origin of a slow recombination process in MAPbI3. In this review, we have presented the interplay between the mechanisms and our views/perspectives in determining the likely processes, which may dictate the recombination dynamics in the material. We have also deliberated on their interdependences in decoupling contributions of different recombination processes.
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Affiliation(s)
- Abhishek Maiti
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Amlan J Pal
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
- UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452001, India
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32
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Wang H, Ling F, Luo C, Li D, Xiao Y, Chang Z, Xu Z, Zeng Y, Wang W, Yao J. Active terahertz modulator based on optically controlled organometal halide perovskite MAPbI 2Br. APPLIED OPTICS 2022; 61:1171-1176. [PMID: 35201169 DOI: 10.1364/ao.444667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
In this paper, an active terahertz modulator based on optically controlled organometal halide perovskite MAPbI2Br is proposed. The terahertz wave time-domain transmission of the MAPbI2Br/Al2O3 sample was measured by a terahertz time-domain spectrometer. Experimental results indicate that the MAPbI2Br/Al2O3 sample showed an obvious optical-power-dependent modulation effect on transmission of the terahertz wave; the maximum modulation depth of the modulator can reach 59.99% at 0.3 THz when the external pump optical power is up to 1500 mW.
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Jain P, Mazumder M, Pradeep KR, Viswanatha R, Pati SK, Narayana C. Polaronic Signatures in Doped and Undoped Cesium Lead Halide Perovskite Nanocrystals through a Photoinduced Raman Mode. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5567-5577. [PMID: 35041391 DOI: 10.1021/acsami.1c20321] [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
Lead halide perovskites (LHPs) are promising candidates for photovoltaic applications as they exhibit large carrier diffusion lengths and long carrier lifetimes among many other interesting properties. One of the widely accepted mechanisms for these properties is polaron formation, which is mainly driven by octahedral distortions of the inorganic framework. Since structure modifications of the framework largely affect associated distortions, we investigated Mn-doped and undoped CsPbX3 (where X = Cl, Br, Cl/Br) using a local probe via micro-Raman spectroscopy and density functional theory (DFT) calculations for polaron formation. Our results highlight a new vibrational lattice mode at 132 cm-1 due to polaronic distortion upon photoinduction. From the DFT studies, we have shown that the polaronic states are dominated by the B-site cation in the perovskite structure, but it is the strong covalent overlap of the halide which determines its stability. This elucidation to map polaronic signatures with excellent spatial resolution using traditional Raman spectroscopy can be used as a simple tool to understand the structural changes and their impacted electronic properties and thus design superior devices using its in situ applications.
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Affiliation(s)
- Priyanka Jain
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
| | - Madhulika Mazumder
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
| | - K R Pradeep
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- International Centre for Material Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
| | - Ranjani Viswanatha
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- International Centre for Material Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
| | - Swapan K Pati
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
| | - Chandrabhas Narayana
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, India
- Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala 695014, India
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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.
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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
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35
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Kinik FP, Ortega-Guerrero A, Ebrahim FM, Ireland CP, Kadioglu O, Mace A, Asgari M, Smit B. Toward Optimal Photocatalytic Hydrogen Generation from Water Using Pyrene-Based Metal-Organic Frameworks. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57118-57131. [PMID: 34817166 PMCID: PMC8662633 DOI: 10.1021/acsami.1c16464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/12/2021] [Indexed: 05/15/2023]
Abstract
Metal-organic frameworks (MOFs) are promising materials for the photocatalytic H2 evolution reaction (HER) from water. To find the optimal MOF for a photocatalytic HER, one has to consider many different factors. For example, studies have emphasized the importance of light absorption capability, optical band gap, and band alignment. However, most of these studies have been carried out on very different materials. In this work, we present a combined experimental and computation study of the photocatalytic HER performance of a set of isostructural pyrene-based MOFs (M-TBAPy, where M = Sc, Al, Ti, and In). We systematically studied the effects of changing the metal in the node on the different factors that contribute to the HER rate (e.g., optical properties, the band structure, and water adsorption). In addition, for Sc-TBAPy, we also studied the effect of changes in the crystal morphology on the photocatalytic HER rate. We used this understanding to improve the photocatalytic HER efficiency of Sc-TBAPy, to exceed the one reported for Ti-TBAPy, in the presence of a co-catalyst.
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Affiliation(s)
- F. Pelin Kinik
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Andres Ortega-Guerrero
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Fatmah Mish Ebrahim
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Christopher P. Ireland
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Ozge Kadioglu
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Amber Mace
- Department
of Chemistry—Ångström Laboratory, Uppsala University, Uppsala SE-751 21, Sweden
| | - Mehrdad Asgari
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
| | - Berend Smit
- Laboratory
of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie
Chimiques (ISIC), Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, Sion CH-1951, Valais, Switzerland
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36
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Nuber M, Sandner D, Neumann T, Kienberger R, Deschler F, Iglev H. Bimolecular Generation of Excitonic Luminescence from Dark Photoexcitations in Ruddlesden-Popper Hybrid Metal-Halide Perovskites. J Phys Chem Lett 2021; 12:10450-10456. [PMID: 34672580 DOI: 10.1021/acs.jpclett.1c03099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The nature of photoexcitations in Ruddlesden-Popper (RP) hybrid metal halide perovskites is still under debate. While the high exciton binding energy in the hundreds of millielectronvolts indicates excitons as the primary photoexcitations, recent reports found evidence for dark, Coulombically screened populations, which form via strong coupling of excitons and the atomic lattice. Here, we use time-resolved mid-infrared spectroscopy to gain insights into the nature and recombination of such dark excited states in (BA)2(MA)n-1PbnI3n+1 (n = 1,2,3) via their intraband electronic absorption. In stark contrast to results in the bulk perovskites, all samples exhibit a broad, unstructured mid-IR photoinduced absorbance with no infrared activated modes, independent of excitonic confinement. Further, the recombination dynamics are dominated by a bimolecular process. In combination with steady-state photoluminescence experiments, we conclude that screened, dark photoexcitations act as a population reservoir in the RP hybrid perovskites, from which nongeminate formation of bright excitons precedes generation of photoluminescence.
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Affiliation(s)
- Matthias Nuber
- Lehrstuhl für Laser- und Röntgenphysik, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Daniel Sandner
- Lehrstuhl für Laser- und Röntgenphysik, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Timo Neumann
- Cavendish Laboratory, University of Cambridge, Cambridge CB30HE, U.K
- Walter Schottky Institut, Physik-Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Reinhard Kienberger
- Lehrstuhl für Laser- und Röntgenphysik, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Felix Deschler
- Walter Schottky Institut, Physik-Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Hristo Iglev
- Lehrstuhl für Laser- und Röntgenphysik, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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37
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Wang J, Duan X, Yin WJ. Photoinduced Dynamic Defects Responsible for the Giant, Reversible, and Bidirectional Light-Soaking Effect in Perovskite Solar Cells. J Phys Chem Lett 2021; 12:9328-9335. [PMID: 34546066 DOI: 10.1021/acs.jpclett.1c02929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Perovskite solar cells (PSCs) exhibit large, reversible, and bidirectional light-soaking effects (LSEs); however, these anomalous LSEs are poorly understood, limiting the stability engineering and commercialization. We present a unified defect theory for the LSEs in lead halide perovskites by reconciling their defect photochemistry, ionic migration, and carrier dynamics. We considered typical detrimental defects (IPb, Ii, VI) and observed that two atomic configurations were favored, where the carrier lifetime of one configuration was nearly 1 order of magnitude longer than that in the other. First-principles calculations showed that light illumination promotes ion-diffusion-assisted transitions from energetically stable configurations to metastable configurations, which are converted back to stable configurations in the dark. Fermi-level-dependent formation energies of stable/metastable configurations were used to rationalize contradictory experimental results of anomalous LSEs in PSCs observed in various studies, thus providing insights for minimizing the LSE to achieve high-performance stable PSCs.
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Affiliation(s)
- Jing Wang
- College of Energy, Soochow Institute for Energy and Materials InnovationS (SIEMIS), Soochow University, Suzhou 215006, People's Republic of China
| | - Xiangmei Duan
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, People's Republic of China
| | - Wan-Jian Yin
- College of Energy, Soochow Institute for Energy and Materials InnovationS (SIEMIS), Soochow University, Suzhou 215006, People's Republic of China
- Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou 215006, People's Republic of China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, People's Republic of China
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38
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Peters JA, Liu Z, Bulgin O, He Y, Klepov VV, De Siena MC, Kanatzidis MG, Wessels BW. Excitons in CsPbBr 3 Halide Perovskite. J Phys Chem Lett 2021; 12:9301-9307. [PMID: 34543034 DOI: 10.1021/acs.jpclett.1c02397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Excitons in Bridgman grown halide perovskite CsPbBr3 single crystals were examined using photoluminescence (PL) spectroscopy to determine the nature of the electronic states. The photoluminescence intensity was strongly temperature-dependent and depended upon the specific exciton band. At low temperatures intrinsic disorder and its related shallow below bandgap tail states determine the emission properties. Photoluminescence at low temperature revealed the presence of several strong bands at the band edge that is attributed to free or trapped/bound excitons. This PL emission results from strong electron-phonon coupling with an average phonon energy Eph of 6.5 and 27.4 meV for the emissions, comparable to that observed in other perovskites. The Huang-Rhys parameter S was calculated to be 3.81 and 1.51, indicating strong electron-phonon coupling. The interactions between electrons and phonons produce small polarons that tend to bind charge carriers and result in trapped/bound excitons. The transient photoluminescence response of each specific band was studied, and the results indicated a multiphonon recombination process. Average PL lifetimes of ∼17 ns for free excitons and ∼38 ns for trapped/bound excitons were determined. The observed edge states could be associated with native defects such as vacancies and interstitials, as well as twinning due to the cubic-to-tetragonal phase transition in CsPbBr3. Elimination of the trapping sites for binding excitons could lead to improved charge transport mobilities, carrier lifetimes, and detector properties in this system.
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Affiliation(s)
- J A Peters
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Physics, and Engineering Studies, Chicago State University, Chicago, Illinois 60628, United States
| | - Z Liu
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - O Bulgin
- Department of Chemistry, Physics, and Engineering Studies, Chicago State University, Chicago, Illinois 60628, United States
| | - Y He
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - V V Klepov
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - M C De Siena
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - M G Kanatzidis
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - B W Wessels
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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39
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Mangan SM, Zhou G, Chu W, Prezhdo OV. Dependence between Structural and Electronic Properties of CsPbI 3: Unsupervised Machine Learning of Nonadiabatic Molecular Dynamics. J Phys Chem Lett 2021; 12:8672-8678. [PMID: 34472856 DOI: 10.1021/acs.jpclett.1c02361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Using unsupervised machine learning on the trajectories from a nonadiabatic molecular dynamics simulation with time-dependent Kohn-Sham density functional theory, we elucidated the structural parameters with the largest influence on nonradiative recombination of charge carriers in CsPbI3, which forms the basis for solar energy and optoelectronic applications. The I-I-I angles between PbI6 octahedra, followed by the Cs-I distance, have the strongest impact on the bandgap and the nonadiabatic coupling. The importance of the Cs-I distance is unexpected, because Cs does not contribute to electron and hole wave functions. The nonadiabatic coupling is most influenced by static properties, which is also surprising, given its explicit dependence on atomic velocities.
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Affiliation(s)
- Spencer M Mangan
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
| | - Guoqing Zhou
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States
| | - Weibin Chu
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Oleg V Prezhdo
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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40
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Shcherbakov-Wu W, Sercel PC, Krieg F, Kovalenko MV, Tisdale WA. Temperature-Independent Dielectric Constant in CsPbBr 3 Nanocrystals Revealed by Linear Absorption Spectroscopy. J Phys Chem Lett 2021; 12:8088-8095. [PMID: 34406780 DOI: 10.1021/acs.jpclett.1c01822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fundamental photophysical behavior in CsPbBr3 nanocrystals (NCs), especially at low temperatures, is under active investigation. While many studies have reported temperature-dependent photoluminescence, comparatively few have focused on understanding the temperature-dependent absorption spectrum. Here, we report the temperature-dependent (35-300 K) absorption and photoluminescence spectra of zwitterionic ligand-capped CsPbBr3 NCs with four different edge lengths (d = 4.9, 7.2, 8.1, and 13.2 nm). The two lowest-energy excitonic transitions are quantitatively modeled over the full temperature range within the effective mass approximation considering the quasi-cubic NC shape and nonparabolicity of the electronic bands. Significantly, we find that the effective dielectric constant determined from the best fit model parameters is independent of temperature. Moreover, we observe a temperature-dependent Stokes shift that saturates at a finite value of Δ ≈ 10 meV at low temperatures for d = 7.2 nm NCs, which is absent in bulk CsPbBr3 films. Overall, these observations highlight differences between the temperature-dependent dielectric behavior of NC and bulk perovskites and point to the need for a more unified theoretical understanding of absorption and emission in halide perovskites.
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Affiliation(s)
- Wenbi Shcherbakov-Wu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, United States
| | - Peter C Sercel
- Center for Hybrid Organic Inorganic Semiconductors for Energy, Golden, Colorado 80401, United States
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, California 91125, United States
| | - Franziska Krieg
- Department of Chemistry and Applied Bioscience, ETH Zürich, 8093 Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics and Laboratory for Transport at Nanoscale Interfaces, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Maksym V Kovalenko
- Department of Chemistry and Applied Bioscience, ETH Zürich, 8093 Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics and Laboratory for Transport at Nanoscale Interfaces, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - William A Tisdale
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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41
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Zhang Q, Pei L, Li J, Wang K, Zeng Q, Yu H. Achieving Band Gap Reduction and Carrier Lifetime Enhancement in Metal Halide Perovskites via Mechanical Stretching. J Phys Chem Lett 2021; 12:7207-7212. [PMID: 34310153 DOI: 10.1021/acs.jpclett.1c01992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Strain engineering has become an efficient way to tune the optical and electronic behaviors of metal halide perovskites as a result of their unique structure-dependent optoelectronic characteristics. In this work, we show that the band gap can be reduced and, meanwhile, the carrier lifetime is increased by simply stretching the MAPbI3-xClx perovskite thin films. The narrowed band gap and prolonged carrier lifetime are beneficial for the photovoltaic actions, indicating that mechanical stretching can be a simple and efficient way to achieve photovoltaic property optimization of stretchable perovskite-based devices. Furthermore, Raman spectra show that the Pb-I bond length is shortened with mechanical stretching, which increases the valence band maximum (VBM) through orbital coupling, leading to a narrower band gap. Consequently, the trap states near VBM can be radiative as the trap energy levels become closer to the VBM, resulting in a prolonged carrier lifetime. This work brings huge opportunities to control the optoelectronic properties of metal halide perovskites through mechanical stress toward optoelectronic applications.
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Affiliation(s)
- Qi Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Liying Pei
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Jinpeng Li
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Kai Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Qi Zeng
- School of Material Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Haomiao Yu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing 100044, People's Republic of China
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42
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Li W, She Y, Vasenko AS, Prezhdo OV. Ab initio nonadiabatic molecular dynamics of charge carriers in metal halide perovskites. NANOSCALE 2021; 13:10239-10265. [PMID: 34031683 DOI: 10.1039/d1nr01990b] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Photoinduced nonequilibrium processes in nanoscale materials play key roles in photovoltaic and photocatalytic applications. This review summarizes recent theoretical investigations of excited state dynamics in metal halide perovskites (MHPs), carried out using a state-of-the-art methodology combining nonadiabatic molecular dynamics with real-time time-dependent density functional theory. The simulations allow one to study evolution of charge carriers at the ab initio level and in the time-domain, in direct connection with time-resolved spectroscopy experiments. Eliminating the need for the common approximations, such as harmonic phonons, a choice of the reaction coordinate, weak electron-phonon coupling, a particular kinetic mechanism, and perturbative calculation of rate constants, we model full-dimensional quantum dynamics of electrons coupled to semiclassical vibrations. We study realistic aspects of material composition and structure and their influence on various nonequilibrium processes, including nonradiative trapping and relaxation of charge carriers, hot carrier cooling and luminescence, Auger-type charge-charge scattering, multiple excitons generation and recombination, charge and energy transfer between donor and acceptor materials, and charge recombination inside individual materials and across donor/acceptor interfaces. These phenomena are illustrated with representative materials and interfaces. Focus is placed on response to external perturbations, formation of point defects and their passivation, mixed stoichiometries, dopants, grain boundaries, and interfaces of MHPs with charge transport layers, and quantum confinement. In addition to bulk materials, perovskite quantum dots and 2D perovskites with different layer and spacer cation structures, edge passivation, and dielectric screening are discussed. The atomistic insights into excited state dynamics under realistic conditions provide the fundamental understanding needed for design of advanced solar energy and optoelectronic devices.
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Affiliation(s)
- Wei Li
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
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43
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Vasilchenko V, Levchenko S, Perebeinos V, Zhugayevych A. Small Polarons in Two-Dimensional Pnictogens: A First-Principles Study. J Phys Chem Lett 2021; 12:4674-4680. [PMID: 33979171 DOI: 10.1021/acs.jpclett.1c00929] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report the first-principles study of small polarons in the most stable two-dimensional pnictogen allotropes: blue and black phosphorene and arsenene. While both cations and anions of small hydrogen-passivated clusters show charge localization and local lattice distortions, only the hole polaron in the blue allotrope is stable in the infinite size cluster limit. The adiabatic polaron relaxation energy is found to be 0.1 eV for phosphorene and 0.15 eV for arsenene. The polaron is localized on lone-pair orbitals with half of the extra charge distributed among 13 atoms. In the blue phosphorene, these orbitals form the valence band's top with a relatively flat band dispersion. However, in the black phosphorene, lone-pair orbitals hybridize with bonding orbitals, which explains the difference in hole localization strength between the two topologically equivalent allotropes. The polaron's adiabatic barriers for motion are small compared to the most strongly coupled phonon frequency, implying the polaron barrierless motion.
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Affiliation(s)
| | - Sergey Levchenko
- Skolkovo Institute of Science and Technology, Moscow 143026, Russia
| | - Vasili Perebeinos
- Department of Electrical Engineering, University at Buffalo, Buffalo, New York 14260, United States
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44
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Guzelturk B, Winkler T, Van de Goor TWJ, Smith MD, Bourelle SA, Feldmann S, Trigo M, Teitelbaum SW, Steinrück HG, de la Pena GA, Alonso-Mori R, Zhu D, Sato T, Karunadasa HI, Toney MF, Deschler F, Lindenberg AM. Visualization of dynamic polaronic strain fields in hybrid lead halide perovskites. NATURE MATERIALS 2021; 20:618-623. [PMID: 33398119 DOI: 10.1038/s41563-020-00865-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Excitation localization involving dynamic nanoscale distortions is a central aspect of photocatalysis1, quantum materials2 and molecular optoelectronics3. Experimental characterization of such distortions requires techniques sensitive to the formation of point-defect-like local structural rearrangements in real time. Here, we visualize excitation-induced strain fields in a prototypical member of the lead halide perovskites4 via femtosecond resolution diffuse X-ray scattering measurements. This enables momentum-resolved phonon spectroscopy of the locally distorted structure and reveals radially expanding nanometre-scale strain fields associated with the formation and relaxation of polarons in photoexcited perovskites. Quantitative estimates of the magnitude and shape of this polaronic distortion are obtained, providing direct insights into the dynamic structural distortions that occur in these materials5-9. Optical pump-probe reflection spectroscopy corroborates these results and shows how these large polaronic distortions transiently modify the carrier effective mass, providing a unified picture of the coupled structural and electronic dynamics that underlie the optoelectronic functionality of the hybrid perovskites.
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Affiliation(s)
- Burak Guzelturk
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Thomas Winkler
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Physics and Astronomy, Aarhus University, Aarhus C, Denmark
| | | | - Matthew D Smith
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Sean A Bourelle
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Sascha Feldmann
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Mariano Trigo
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Samuel W Teitelbaum
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Hans-Georg Steinrück
- Stanford Synchrotron Radiation Laboratory Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
- Department of Chemistry, Paderborn University, Paderborn, Germany
| | - Gilberto A de la Pena
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Roberto Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Diling Zhu
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Takahiro Sato
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Hemamala I Karunadasa
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Michael F Toney
- Stanford Synchrotron Radiation Laboratory Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Felix Deschler
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Walter Schottky Institute, Department of Physics, Technical University of Munich, Garching, Germany
| | - Aaron M Lindenberg
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA.
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
- PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, USA.
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45
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Tao W, Zhang C, Zhou Q, Zhao Y, Zhu H. Momentarily trapped exciton polaron in two-dimensional lead halide perovskites. Nat Commun 2021; 12:1400. [PMID: 33658515 PMCID: PMC7930248 DOI: 10.1038/s41467-021-21721-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/04/2021] [Indexed: 01/07/2023] Open
Abstract
Two-dimensional (2D) lead halide perovskites with distinct excitonic feature have shown exciting potential for optoelectronic applications. Compared to their three-dimensional counterparts with large polaron character, how the interplay between long- and short- range exciton-phonon interaction due to polar and soft lattice define the excitons in 2D perovskites is yet to be revealed. Here, we seek to understand the nature of excitons in 2D CsPbBr3 perovskites by static and time-resolved spectroscopy which is further rationalized with Urbach-Martienssen rule. We show quantitatively an intermediate exciton-phonon coupling in 2D CsPbBr3 where exciton polarons are momentarily self-trapped by lattice vibrations. The 0.25 ps ultrafast interconversion between free and self-trapped exciton polaron with a barrier of ~ 34 meV gives rise to intrinsic asymmetric photoluminescence with a low energy tail at room temperature. This study reveals a complex and dynamic picture of exciton polarons in 2D perovskites and emphasizes the importance to regulate exciton-phonon coupling. Two-dimensional perovskite shows potential for optoelectronic applications due to its large exciton binding energy, yet the exciton-phonon interaction with the polar soft lattice is not well-understood. Here, the authors reveal the intermediate coupling regime where exciton polarons are momentarily trapped by lattice vibrations.
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Affiliation(s)
- Weijian Tao
- State Key Laboratory of Modern Optical Instrumentation, Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chi Zhang
- State Key Laboratory of Modern Optical Instrumentation, Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Qiaohui Zhou
- State Key Laboratory of Modern Optical Instrumentation, Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yida Zhao
- State Key Laboratory of Modern Optical Instrumentation, Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Haiming Zhu
- State Key Laboratory of Modern Optical Instrumentation, Centre for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China.
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46
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Dehnhardt N, Luy J, Klement P, Schipplick L, Chatterjee S, Tonner R, Heine J. Gemischte Gruppe‐14‐15‐Metallate als Modellverbindungen für dotierte Bleihalogenidperowskite. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Natalie Dehnhardt
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften WZMW Philipps-Universität Marburg Hans-Meerwein-Straße 35043 Marburg Deutschland
| | - Jan‐Niclas Luy
- Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Deutschland
| | - Philip Klement
- I. Physikalisches Institut & Zentrum für Materialforschung (ZfM) Justus Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
| | - Luca Schipplick
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften WZMW Philipps-Universität Marburg Hans-Meerwein-Straße 35043 Marburg Deutschland
| | - Sangam Chatterjee
- I. Physikalisches Institut & Zentrum für Materialforschung (ZfM) Justus Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
| | - Ralf Tonner
- Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Deutschland
- Derzeitige Adresse: Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universität Leipzig Linnéstraße 2 04103 Leipzig Deutschland
| | - Johanna Heine
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften WZMW Philipps-Universität Marburg Hans-Meerwein-Straße 35043 Marburg Deutschland
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47
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Dehnhardt N, Luy J, Klement P, Schipplick L, Chatterjee S, Tonner R, Heine J. Mixed Group 14–15 Metalates as Model Compounds for Doped Lead Halide Perovskites. Angew Chem Int Ed Engl 2021. [PMCID: PMC7898470 DOI: 10.1002/anie.202014696] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Doping and alloying are valuable tools for modifying and enhancing the properties and performance of lead halide perovskites. However, the effects of heterovalent doping with Sb3+ and Bi3+ cations are still a matter of current investigation. Due to the different charge of the dopants compared to the constituting Pb2+ ions, a simultaneous creation of defects is unavoidable and the influence of these defects and the actual metal substitution become entangled. Herein, we present the first 14–15 iodido metalates, (BED)4PbE2I16 (BED=N‐benzylethylenediammonium; E=Sb (1), Bi (2)), which are model compounds for doped lead iodide perovskites and display surprisingly low band gaps of 2.01 (1) and 1.88 eV (2). Quantum chemical investigations show that this stems from a good electronic match between the PbI6 and EI6 units of the compounds. Our results provide a model system for doped perovskites, but also represent the first examples of a promising new class of metal halide materials.
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Affiliation(s)
- Natalie Dehnhardt
- Department of Chemistry and Material Sciences Center Philipps-Universität Marburg Hans-Meerwein-Strasse 35043 Marburg Germany
| | - Jan‐Niclas Luy
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstrasse 31 93053 Regensburg Germany
| | - Philip Klement
- Institute of Experimental Physics I and Center for Materials Research (ZfM) Justus Liebig University Giessen Heinrich-Buff-Ring 16 35392 Giessen Germany
| | - Luca Schipplick
- Department of Chemistry and Material Sciences Center Philipps-Universität Marburg Hans-Meerwein-Strasse 35043 Marburg Germany
| | - Sangam Chatterjee
- Institute of Experimental Physics I and Center for Materials Research (ZfM) Justus Liebig University Giessen Heinrich-Buff-Ring 16 35392 Giessen Germany
| | - Ralf Tonner
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstrasse 31 93053 Regensburg Germany
- Current address: Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universität Leipzig Linnéstrasse 2 04103 Leipzig Germany
| | - Johanna Heine
- Department of Chemistry and Material Sciences Center Philipps-Universität Marburg Hans-Meerwein-Strasse 35043 Marburg Germany
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48
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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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49
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Goñi AR. Echoes from quantum confinement. NATURE MATERIALS 2020; 19:1138-1139. [PMID: 32839588 DOI: 10.1038/s41563-020-0796-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- Alejandro R Goñi
- ICREA, Barcelona, Spain.
- Institute of Materials Science of Barcelona (ICMAB-CSIC), Bellaterra, Spain.
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50
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Keshavarz M, Debroye E, Ottesen M, Martin C, Zhang H, Fron E, Küchler R, Steele JA, Bremholm M, Van de Vondel J, Wang HI, Bonn M, Roeffaers MBJ, Wiedmann S, Hofkens J. Tuning the Structural and Optoelectronic Properties of Cs 2 AgBiBr 6 Double-Perovskite Single Crystals through Alkali-Metal Substitution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001878. [PMID: 32864757 DOI: 10.1002/adma.202001878] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/12/2020] [Indexed: 05/25/2023]
Abstract
Lead-free double perovskites have great potential as stable and nontoxic optoelectronic materials. Recently, Cs2 AgBiBr6 has emerged as a promising material, with suboptimal photon-to-charge carrier conversion efficiency, yet well suited for high-energy photon-detection applications. Here, the optoelectronic and structural properties of pure Cs2 AgBiBr6 and alkali-metal-substituted (Cs1- x Yx )2 AgBiBr6 (Y: Rb+ , K+ , Na+ ; x = 0.02) single crystals are investigated. Strikingly, alkali-substitution entails a tunability to the material system in its response to X-rays and structural properties that is most strongly revealed in Rb-substituted compounds whose X-ray sensitivity outperforms other double-perovskite-based devices reported. While the fundamental nature and magnitude of the bandgap remains unchanged, the alkali-substituted materials exhibit a threefold boost in their fundamental carrier recombination lifetime at room temperature. Moreover, an enhanced electron-acoustic phonon scattering is found compared to Cs2 AgBiBr6 . The study thus paves the way for employing cation substitution to tune the properties of double perovskites toward a new material platform for optoelectronics.
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Affiliation(s)
- Masoumeh Keshavarz
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Elke Debroye
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Martin Ottesen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C, 8000, Denmark
| | - Cristina Martin
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
- Departamento de Química Física, Facultad de Farmacia de Albacete, UCLM, Albacete, 02071, Spain
| | - Heng Zhang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Eduard Fron
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Robert Küchler
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, Dresden, 01187, Germany
| | - Julian A Steele
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Martin Bremholm
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C, 8000, Denmark
| | - Joris Van de Vondel
- Quantum Solid-State Physics (QSP), Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, Leuven, 3001, Belgium
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Maarten B J Roeffaers
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Steffen Wiedmann
- High Field Magnet Laboratory and Institute for Molecules and Materials, Radboud University, Toernooiveld 7, Nijmegen, 6525 ED, Netherlands
| | - Johan Hofkens
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
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