1
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Cakan DN, Dolan CJ, Oberholtz E, Kodur M, Palmer JR, Vossler HM, Luo Y, Kumar RE, Zhou T, Cai Z, Lai B, Holt MV, Dunfield SP, Fenning DP. Cl alloying improves thermal stability and increases luminescence in iodine-rich inorganic perovskites. RSC Adv 2024; 14:21065-21074. [PMID: 38989033 PMCID: PMC11235055 DOI: 10.1039/d4ra04348k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 07/12/2024] Open
Abstract
The inorganic perovskite CsPbI3 shows promising photophysical properties for a range of potential optoelectronic applications but is metastable at room temperature. To address this, Br can be alloyed into the X-site to create compositions such as CsPbI2Br that are stable at room temperature but have bandgaps >1.9 eV - severely limiting solar applications. Herein, in an effort to achieve phase stable films with bandgaps <1.85 eV, we investigate alloying chlorine into iodine-rich triple-halide CsPb(I0.8Br0.2-x Cl x )3 with 0 < x < 0.1. We show that partial substitution of iodine with bromine and chlorine provides a path to maintain broadband terrestrial absorption while improving upon the perovskite phase stability due to chlorine's smaller size and larger ionization potential than bromine. At moderate Cl loading up to ≈5%, X-ray diffraction reveals an increasingly smaller orthorhombic unit cell, suggesting chlorine incorporation into the lattice. Most notably, this Cl incorporation is accompanied by a significant enhancement over Cl-free controls in the duration of black-phase stability of up to 7× at elevated temperatures. Additionally, we observe up to 5× increased steady state photoluminescence intensity (PL), along with a small blue-shift. In contrast, at high loading (≈10%), Cl accumulates in a second phase that is visible at grain boundaries via synchrotron fluorescence microscopy and negatively impacts the perovskite phase stability. Thus, replacing small fractions of bromine for chlorine in the iodine-rich inorganic perovskite lattice results in distinct improvement thermal stability and optoelectronic quality while minimally impacting the bandgap.
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Affiliation(s)
- Deniz N Cakan
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
| | - Connor J Dolan
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
| | - Eric Oberholtz
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
| | - Moses Kodur
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
| | - Jack R Palmer
- Materials Science and Engineering Program, University of California La Jolla San Diego California 92093 USA
| | - Hendrik M Vossler
- Materials Science and Engineering Program, University of California La Jolla San Diego California 92093 USA
| | - Yanqi Luo
- Advanced Photon Source, Argonne National Laboratory Lemont IL 60439 USA
| | - Rishi E Kumar
- Materials Science and Engineering Program, University of California La Jolla San Diego California 92093 USA
| | - Tao Zhou
- Center for Nanoscale Materials, Argonne National Laboratory Lemont IL 60439 USA
| | - Zhonghou Cai
- Advanced Photon Source, Argonne National Laboratory Lemont IL 60439 USA
| | - Barry Lai
- Advanced Photon Source, Argonne National Laboratory Lemont IL 60439 USA
| | - Martin V Holt
- Center for Nanoscale Materials, Argonne National Laboratory Lemont IL 60439 USA
| | - Sean P Dunfield
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
| | - David P Fenning
- Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California La Jolla San Diego California 92093 USA
- Materials Science and Engineering Program, University of California La Jolla San Diego California 92093 USA
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2
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Lu Y, Alam F, Shamsi J, Abdi-Jalebi M. Doping Up the Light: A Review of A/B-Site Doping in Metal Halide Perovskite Nanocrystals for Next-Generation LEDs. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:10084-10107. [PMID: 38919725 PMCID: PMC11194817 DOI: 10.1021/acs.jpcc.4c00749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 05/29/2024] [Accepted: 05/29/2024] [Indexed: 06/27/2024]
Abstract
All-inorganic metal halide perovskite nanocrystals (PeNCs) show great potential for the next generation of perovskite light-emitting diodes (PeLEDs). However, trap-assisted recombination negatively impacts the optoelectronic properties of PeNCs and prevents their widespread adoption for commercial exploitation. To mitigate trap-assisted recombination and further enhance the external quantum efficiency of PeLEDs, A/B-site doping has been widely investigated to tune the bandgap of PeNCs. The bandgap of PeNCs is adjustable within a small range (no more than 0.1 eV) by A-site cation doping, resulting in changes in the bond length of Pb-X and the angle of [PbX6]4. Nevertheless, B-site doping of PeNCs has a more significant impact on the bandgap level through modification of surface defect states. In this perspective, we delve into the synthesis of PeNCs with A/B-site doping and their impacts on the structural and optoelectronic properties, as well as their impacts on the performance of subsequent PeLEDs. Furthermore, we explore the A-site and B-site doping mechanisms and the impact of device architecture on doped PeNCs to maximize the performance and stability of PeLEDs. This work presents a comprehensive overview of the studies on A-site and B-site doping in PeNCs and approaches to unlock their full potential in the next generation of LEDs.
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Affiliation(s)
- Ying Lu
- Institute
for Materials Discovery, University College
London, Malet Place, London WC1E
7JE, United Kingdom
| | - Firoz Alam
- Department
of Electronic and Electrical Engineering, University College London, London WC1E 6BT, United
Kingdom
| | - Javad Shamsi
- Cavendish
Laboratory, Department of Physics, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Mojtaba Abdi-Jalebi
- Institute
for Materials Discovery, University College
London, Malet Place, London WC1E
7JE, United Kingdom
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3
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Qin Z, Caraveo-Frescas JA, Fernandez-Izquierdo L, Arellano-Jimenez MJ, Aguirre-Tostado FS, Reyes-Banda MG, Quevedo-Lopez MA. Stability of Cesium-Based Lead Halide Perovskites under UV Radiation. ACS OMEGA 2024; 9:26683-26691. [PMID: 38911782 PMCID: PMC11191088 DOI: 10.1021/acsomega.4c01461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/25/2024]
Abstract
Lead halide perovskites have been extensively studied for their potential applications, including photodetectors, solar cells, and high-energy radiation detection. These applications are possible because of their unique optoelectronic properties, such as tunable band gap, high optical absorption coefficient, and unique defect self-healing properties, which result in high defect tolerance. Despite these advantages, the long-term stability remains a critical issue that could hinder commercial applications of these materials. Reports on the stability of lead halide perovskites for optoelectronic applications have normally focused on methylammonium (MA)/formamidinium (FA), with very limited information for other systems, in particular, Cs-containing perovskites. In this paper, we report the stability of thick CsPbBr3-x Cl x polycrystalline thin films (∼8 μm) with several halide Br-Cl ratios after exposure to deep UV radiation. The chemical, crystal structure, optical, and electrical properties are analyzed, and the results are used to propose a degradation mechanism. The chemical analysis on the surface and bulk of the films indicates the formation of cesium oxide after UV exposure, with no significant change in the crystalline structure. The proposed mechanism explains the formation of cesium oxides during UV exposure. The I-V characteristics of diode structures also showed significant degradation after UV exposure, primarily at lower diode rectification ratios. The mechanism proposed in this paper can contribute to developing strategies to enhance the long-term stability of inorganic lead halide perovskites under UV exposure.
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Affiliation(s)
- Zhiyang Qin
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
| | - Jesus Alfonso Caraveo-Frescas
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
| | - Leunam Fernandez-Izquierdo
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
| | - M. Josefina Arellano-Jimenez
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
| | - Francisco S. Aguirre-Tostado
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
- Centro
de Investigacion en Materiales Avanzados, SC Alianza Norte 202, Apodaca, NL 66628, Mexico
| | - Martin Gregorio Reyes-Banda
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
| | - Manuel A. Quevedo-Lopez
- Department
of Material Science and Engineering, The
University of Texas at Dallas, 2601 North Floyd Road RL10, Richardson, Texas 75080, United States
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4
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Li X, Chen X, Jiang H, Wang M, Lin S, Ma Z, Wang H, Ji H, Jia M, Han Y, Zhu J, Pan G, Wu D, Li X, Xu W, Liu Y, Shan CX, Shi Z. Efficient Deep-Blue Light-Emitting Diodes from Highly Luminescent Eu 2+-Doped Alkali Metal Halide Nanocrystals via Lattice Field Modulation. NANO LETTERS 2024; 24:6601-6609. [PMID: 38787739 DOI: 10.1021/acs.nanolett.4c01155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Lead-halide perovskite nanocrystals (NCs) are promising for fabricating deep-blue (<460 nm) light-emitting diodes (LEDs), but their development is plagued by low electroluminescent performance and lead toxicity. Herein, the synthesis of 12 kinds of highly luminescent and eco-friendly deep-blue europium (Eu2+)-doped alkali-metal halides (AX:Eu2+; A = Na+, K+, Rb+, Cs+; X = Cl-, Br-, I-) NCs is reported. Through adjustment of the coordination environment, efficient deep-blue emission from Eu-5d → Eu-4f transitions is realized. The representative CsBr:Eu2+ NCs exhibit a high photoluminescence quantum yield of 91.1% at 441 nm with a color coordinate at (0.158, 0.023) matching with the Rec. 2020 blue specification. Electrically driven deep-blue LEDs from CsBr:Eu2+ NCs are demonstrated, achieving a record external quantum efficiency of 3.15% and half-lifetime of ∼1 h, surpassing the reported metal-halide deep-blue NCs-based LEDs. Importantly, large-area LEDs with an emitting area of 12.25 cm2 are realized with uniform emission, representing a milestone toward commercial display applications.
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Affiliation(s)
- Xu Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Huifang Jiang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Meng Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Shuailing Lin
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Hui Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Huifang Ji
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Yanbing Han
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Jinyang Zhu
- State Center for International Cooperation on Designer Low-Carbon & Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Gencai Pan
- School of Physics and Electronics and Institute of Micro/Nano Photonic Materials and Applications, Henan University, Kaifeng 475004, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
| | - Ying Liu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Chong-Xin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
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5
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Li X, Lou B, Chen X, Wang M, Jiang H, Lin S, Ma Z, Jia M, Han Y, Tian Y, Wu D, Xu W, Li X, Ma C, Shi Z. Deep-blue narrow-band emissive cesium europium bromide perovskite nanocrystals with record high emission efficiency for wide-color-gamut backlight displays. MATERIALS HORIZONS 2024; 11:1294-1304. [PMID: 38168978 DOI: 10.1039/d3mh01631e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Lead halide perovskite nanocrystals (NCs) are highly promising for backlighting display applications due to their high photoluminescence quantum yields (PLQYs) and wide color gamut values. However, the practical applications of blue emitters are limited due to the toxicity of lead, unstable structure, and unsatisfactory PLQY. Herein, we report the successful synthesis of divalent europium-based perovskite CsEuBr3 NCs using a modified hot injection method. By optimizing the reaction conditions, the CsEuBr3 NCs display a deep-blue emission at 443 nm with a full width at half maximum (FWHM) of 28.5 nm, a color purity of 99.61%, and a record high PLQY of 93.51% for deep-blue narrow-band emissive lead-free perovskite NCs as far as we know. The emission mechanism of CsEuBr3 NCs is proved through first-principles calculations and spectral analysis. Notably, the CsEuBr3 NCs exhibit remarkable stability when exposed to high temperature, UV irradiation, and long-term sealed storage. The incorporation of CsEuBr3 NCs into polydimethylsiloxane (PDMS) serving as a converter is utilized for white light-emitting devices (WLEDs). WLEDs for backlight displays achieves a wide color gamut of 127.1% of the National Television System Committee standard (NTSC), 94.9% coverage of the ITU-R Recommendation BT.2020 (Rec.2020), and their half-lifetime is up to 1677 h, providing a promising pathway for highly efficient, environment-friendly and practical liquid crystal display backlights.
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Affiliation(s)
- Xu Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Bibo Lou
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Xu Chen
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Meng Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Huifang Jiang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Shuailing Lin
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Zhuangzhuang Ma
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Mochen Jia
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yanbing Han
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yongtao Tian
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Di Wu
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
| | - Xinjian Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Chonggeng Ma
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Zhifeng Shi
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
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6
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Xu T, Xiang W, Ru X, Wang Z, Liu Y, Li N, Xu H, Liu S. Enhancing Stability and Efficiency of Inverted Inorganic Perovskite Solar Cells with In-Situ Interfacial Cross-Linked Modifier. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2312237. [PMID: 38363019 DOI: 10.1002/adma.202312237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/03/2024] [Indexed: 02/17/2024]
Abstract
Inverted inorganic perovskite solar cells (PSCs) is potential as the top cells in tandem configurations, owing to the ideal bandgap, good thermal and light stability of inorganic perovskites. However, challenges such as mismatch of energy levels between charge transport layer and perovskite, significant non-radiative recombination caused by surface defects, and poor water stability have led to the urgent need for further improvement in the performance of inverted inorganic PSCs. Herein, the fabrication of efficient and stable CsPbI3-x Brx PSCs through surface treatment of (3-mercaptopropyl) trimethoxysilane (MPTS), is reported. The silane groups in MPTS can in situ crosslink in the presence of moisture to build a 3-dimensional (3D) network by Si-O-Si bonds, which forms a hydrophobic layer on perovskite surface to inhibit water invasion. Additionally, -SH can strongly interact with the undercoordinated Pb2+ at the perovskite surface, effectively minimizing interfacial charge recombination. Consequently, the efficiency of the inverted inorganic PSCs improves dramatically from 19.0% to 21.0% under 100 mW cm-2 illumination with MPTS treatment. Remarkably, perovskite films with crosslinked MPTS exhibit superior stability when soaking in water. The optimized PSC maintains 91% of its initial efficiency after aging 1000 h in ambient atmosphere, and 86% in 800 h of operational stability testing.
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Affiliation(s)
- Tianfei Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Wanchun Xiang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Xiaoning Ru
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
- LONGi Central R&D Institute, LONGi Green Energy Technology Co., Ltd, Xi'an, Shaanxi, 710018, China
| | - Zezhang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yali Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Nan Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Haojie Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shengzhong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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7
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Marchant C, Williams RM. Perovskite/silicon tandem solar cells-compositions for improved stability and power conversion efficiency. Photochem Photobiol Sci 2024; 23:1-22. [PMID: 37991706 DOI: 10.1007/s43630-023-00500-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 10/23/2023] [Indexed: 11/23/2023]
Abstract
Perovskite/Silicon Tandem Solar Cells (PSTSCs) represent an emerging opportunity to compete with industry-standard single junction crystalline silicon (c-Si) solar cells. The maximum power conversion efficiency (PCE) of single junction cells is set by the Shockley-Queisser (SQ) limit (33.7%). However, tandem cells can expand this value to ~ 45% by utilising two stacked solar cells to harvest the solar spectrum more efficiently. 33.9% PCE has already been achieved with PSTSCs. This perspective analyses recent advances in PSTSC technology, with an emphasis on optimal perovskite composition, the problem and mitigation of light-induced halide phase segregation, self-assembled hole transporting monolayers and additives that can improve and stabilise the perovskite. Top-performing compositions show three cationic components (Cs+, FA+, Pb2+) and three anionic (I-, Br-, Cl-) with a bandgap between 1.55 and 1.77 eV and a theoretical maximum of 1.73 eV (717 nm). Anionic additives such as (Br3)- and SCN- reduce trap states and segregation. 2D-perovskite grain boundary interfaces are created with cationic alkylammonium additives such as methyl-phenethylammonium (MPEA) and result in improved performance. 2-, 3- or 4-terminal devices with a (partly) textured silicon heterojunction (SHJ) bottom cell are ideal. An ultra-thin interfacial recombination layer (~ 5 nm) of indium tin oxide (ITO) or indium zinc oxide (IZO) containing a carbazole-based hole transporting self-assembled monolayer (Me-4PACz) is used for optimal 2-terminal tandem devices.
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Affiliation(s)
- Charles Marchant
- Molecular Photonics Group, Van't Hoff Institute for Molecular Sciences (HIMS), Universiteit Van Amsterdam, Science Park 904, 1098 XH, Amsterdam, Netherlands
| | - René M Williams
- Molecular Photonics Group, Van't Hoff Institute for Molecular Sciences (HIMS), Universiteit Van Amsterdam, Science Park 904, 1098 XH, Amsterdam, Netherlands.
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8
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Livakas N, Toso S, Ivanov YP, Das T, Chakraborty S, Divitini G, Manna L. CsPbCl 3 → CsPbI 3 Exchange in Perovskite Nanocrystals Proceeds through a Jump-the-Gap Reaction Mechanism. J Am Chem Soc 2023; 145:20442-20450. [PMID: 37691231 PMCID: PMC10515632 DOI: 10.1021/jacs.3c06214] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Indexed: 09/12/2023]
Abstract
Halide exchange is a popular strategy to tune the properties of CsPbX3 nanocrystals after synthesis. However, while Cl → Br and Br → I exchanges proceed through the formation of stable mixed-halide nanocrystals, the Cl ⇌ I exchange is more elusive. Indeed, the large size difference between chloride and iodide ions causes a miscibility gap in the CsPbCl3-CsPbI3 system, preventing the isolation of stable CsPb(ClxI1-x)3 nanocrystals. Yet, previous works have claimed that a full CsPbCl3 → CsPbI3 exchange can be achieved. Even more interestingly, interrupting the exchange prematurely yields a mixture of CsPbCl3 and CsPbI3 nanocrystals that coexist without undergoing further transformation. Here, we investigate the reaction mechanism of CsPbCl3 → CsPbI3 exchange in nanocrystals. We show that the reaction proceeds through the early formation of iodide-doped CsPbCl3 nanocrystals covered by a monolayer shell of CsI. These nanocrystals then leap over the miscibility gap between CsPbCl3 and CsPbI3 by briefly transitioning to short-lived and nonrecoverable CsPb(ClxI1-x)3 nanocrystals, which quickly expel the excess chloride and turn into the chloride-doped CsPbI3 nanocrystals found in the final product.
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Affiliation(s)
- Nikolaos Livakas
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Stefano Toso
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Yurii P. Ivanov
- Electron
Spectroscopy and Nanoscopy, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Tisita Das
- Materials
Theory for Energy Scavenging (MATES) Lab, Department of Physics, Harish-Chandra Research Institute (HRI), A CI of Homi
Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj 211019, India
| | - Sudip Chakraborty
- Materials
Theory for Energy Scavenging (MATES) Lab, Department of Physics, Harish-Chandra Research Institute (HRI), A CI of Homi
Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj 211019, India
| | - Giorgio Divitini
- Electron
Spectroscopy and Nanoscopy, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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9
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Al-Tawil C, El Kurdi R, Patra D. Higher stability and better photoluminescence quantum yield of cesium lead iodide perovskites nanoparticles in the presence of CTAB ligand. Photochem Photobiol Sci 2023; 22:2167-2178. [PMID: 37270746 DOI: 10.1007/s43630-023-00439-9] [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: 04/16/2022] [Accepted: 05/18/2023] [Indexed: 06/05/2023]
Abstract
Inorganic halide perovskites, such as CsPbI3, have unique optoelectronic properties which made them promising candidates for several applications. Unfortunately, these perovskites undergo rapid chemical decomposition and transformation into yellow δ-phase. Thus, the synthesis of stable cesium lead iodide perovskites remains an actual challenging field and it is imperative to develop a stabilized black phase for photovoltaic applications. For this purpose, a surfactant ligand was used to control the synthesis of inorganic perovskite CsPbI3 nanoparticles. Herein we demonstrate a new avenue for lead halide perovskites with the addition of either hexadecyltrimethylammonium bromide (CTAB) or silica nanoparticles to maintain in the first place; the stability of the α-CsPbI3 phase, and later on to boost their photoluminescence quantum yield (PLQY). The prepared perovskites were characterized using UV-visible absorption spectroscopy, fluorescence spectroscopy, scanning electron microscopy, thermogravimetric analysis and X-Ray diffraction technique. Results show higher stability of α-CsPbI3 phase and improvement in PLQY % to reach 99% enhancement in presence of CTAB. Moreover, the photoluminescence intensity of CsPbI3 nanoparticles was higher and was maintained for a longer duration in the presence of CTAB.
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Affiliation(s)
| | - Riham El Kurdi
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
| | - Digambara Patra
- Department of Chemistry, American University of Beirut, Beirut, Lebanon.
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10
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Bala A, Kumar V. Enhanced stability of triple-halide perovskites CsPbI 3-x-yBr xCl y ( x and y = 0-0.024): understanding the role of Cl doping from ab initio calculations. Phys Chem Chem Phys 2023; 25:22989-23000. [PMID: 37594447 DOI: 10.1039/d3cp02476h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Doping of chloride in mixed iodide-bromide perovskites has been shown experimentally to suppress the photo-induced halide-ion segregation and enhance the stability of triple-halide perovskites (THP). However, a fundamental understanding of the effects of Cl doping is yet to be achieved especially when the doping concentration is low. Here we report the results of a state-of-the-art ab initio study of the atomic structure of THP by considering small doping concentrations of Br and Cl in CsPbI3. We find a reduction in the Pb-I bond lengths and tilting of PbI6 octahedra with Cl doping which lead to exothermic heat of mixing and therefore higher stability of THP. Moreover, using quasi-chemical approximation, our results show that there is a very small contribution of configurational entropy to Gibbs free energy at such low doping concentrations and at the operational temperature of 50 °C. This suggests that the favorable heat of mixing value is more important for the stability at low doping concentrations of Cl while a higher concentration of Cl increases the risk of halide segregation. Further calculations on Frenkel defect formation energy of I or Br-interstitial shows that the doping of Cl in I/Br mixed binary-compounds hinders the formation of Frenkel defects. These results support experiments and help to understand the role of chloride in suppressing the halide ion mobility with only a slight increase in the band gap. Accordingly, the THPs manifest a promising pathway for developing single-phase perovskites for solar cells and light-emitting diodes with improved performance and enhanced stability.
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Affiliation(s)
- Anu Bala
- Center for Informatics, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, 201314, Uttar Pradesh, India.
| | - Vijay Kumar
- Center for Informatics, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, 201314, Uttar Pradesh, India.
- Dr. Vijay Kumar Foundation, 1969, Sector 4, Gurgaon 122001, Haryana, India
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11
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Mittal M, Garg R, Jana A. Recent progress in the stabilization of low band-gap black-phase iodide perovskite solar cells. Dalton Trans 2023; 52:11750-11767. [PMID: 37605883 DOI: 10.1039/d3dt01581e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
All-inorganic and organic-inorganic hybrid perovskite solar cells (PSCs) have taken a quantum leap owing to their high performance and low-cost solution processability. Their efficiency has been dramatically increased up to ∼26%, matching the conventional inorganic photovoltaics like monocrystalline Si (26.1%), polycrystalline Si (21.6%), CdTe (22.1%), and CIGS (22.3%). Such outstanding performance has been achieved due to their excellent optoelectronic properties, such as a direct bandgap in the visible region, a very high absorption coefficient, a long charge-carrier diffusion length, and ambipolar carrier transport characteristics. FAPbI3 (FA = formamidinium) and CsPbI3 perovskites among the pool of perovskites are recommended for solar cell applications because they meet all the requirements for photovoltaic applications. However, the fundamental problem of these perovskites is that their photoactive black phase is highly unstable under ambient conditions due to small and large sizes of Cs+ and FA+ ions, respectively. The instability of the black phase of these perovskites hinders their applications in photovoltaic devices as a high-quality light absorber layer. Several approaches have been employed to prevent the formation of the photo-inactive yellow phase or to enhance the stability of the black phase of perovskites, such as dimensional and compositional engineering, the addition of external additives, and dimensional engineering. This perspective summarizes the various methods for stabilizing the black phase of CsPbI3 and FAPbI3 perovskites at room temperature as well as their application in photovoltaic devices.
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Affiliation(s)
- Mona Mittal
- Department of Applied Sciences (Chemistry), Galgotias College of Engineering and Technology, Knowledge Park I, Greater Noida, Uttar Pradesh 201310, India
| | - Rahul Garg
- Department of Chemical Engineering, Indian Institute of Technology Ropar, Nangal Rd, Hussainpur, Rupnagar, Punjab 140001, India
| | - Atanu Jana
- Division of Physics and Semiconductor Science, Dongguk University, Seoul 04620, South Korea.
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12
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Li B, Yang S, Han H, Liu H, Zhao H, Li Z, Xu J, Yao J. Highly Efficient 2D/3D Mixed-Dimensional Cs 2PbI 2Cl 2/CsPbI 2.5Br 0.5 Perovskite Solar Cells Prepared by Methanol/Isopropanol Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13071239. [PMID: 37049332 PMCID: PMC10097316 DOI: 10.3390/nano13071239] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 05/27/2023]
Abstract
All-inorganic perovskite solar cells are attractive photovoltaic devices because of their excellent optoelectronic performance and thermal stability. Unfortunately, the currently used efficient inorganic perovskite materials can spontaneously transform into undesirable phases without light-absorption properties. Studies have been carried out to stabilize all-inorganic perovskite by mixing low-dimensional perovskite. Compared with organic two-dimensional (2D) perovskite, inorganic 2D Cs2PbI2Cl2 shows superior thermal stability. Our group has successfully fabricated 2D/3D mixed-dimensional Cs2PbI2Cl2/CsPbI2.5Br0.5 films with increasing phase stability. The high boiling point of dimethyl sulfoxide (DMSO) makes it a preferred solvent in the preparation of Cs2PbI2Cl2/CsPbI2.5Br0.5 inorganic perovskite. When the perovskite films are prepared by the one-step solution method, it is difficult to evaporate the residual solvent molecules from the prefabricated films, resulting in films with rough surface morphology and high defect density. This study used the rapid precipitation method to control the formation of perovskite by treating it with methanol/isopropanol (MT/IPA) mixed solvent to produce densely packed, smooth, and high-crystallized perovskite films. The bulk defects and the carrier transport barrier of the interface were effectively reduced, which decreased the recombination of the carriers in the device. As a result, this effectively improved photoelectric performance. Through treatment with MT/IPA, the photoelectric conversion efficiency (PCE) of solar cells prepared in the N2 atmosphere increased from 13.44% to 14.10%, and the PCE of the device prepared in the air increased from 3.52% to 8.91%.
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Affiliation(s)
- Bicui Li
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Shujie Yang
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Huifang Han
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Huijing Liu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Hang Zhao
- College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, China
| | - Zhenzhen Li
- College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, China
| | - Jia Xu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Jianxi Yao
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
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13
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Liu X, Li J, Cui X, Wang X, Yang D. Strategies for the preparation of high-performance inorganic mixed-halide perovskite solar cells. RSC Adv 2022; 12:32925-32948. [PMID: 36425177 PMCID: PMC9667475 DOI: 10.1039/d2ra05535j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/03/2022] [Indexed: 11/17/2022] Open
Abstract
Inorganic halide perovskites have attracted significant attention in the field of photovoltaics (PV) in recent years due to their superior intrinsic thermal stability and excellent theoretical power conversion efficiency (PCE). CsPbI3 with a bandgap of ∼1.7 eV is considered to be the most potential candidate for PV application. However, bulk CsPbI3 films exhibit poor phase stability. The substitution of some iodide ions with bromide/chloride in CsPbI3 results in the formation of mixed-halide CsPbX3 perovskites, which exhibit a good balance between phase stability and efficiency. The halogen-tunable mixed-halide inorganic perovskites have a bandgap matching the sunlight region and show great potential for application in multi-junction tandem and semitransparent solar cells. Herein, the progress of mixed-halide CsPbX3 PSCs is systematically reviewed, including CsPbI x Br y Cl3-x-y - and CsPbIBr2-based IPSCs. In the case of CsPbIBr2 IPSCs, we introduce the low-temperature deposition of CsPbIBr2 films, doping methods for the preparation of high-quality CsPbIBr2 films and strategies for improving the performance of solar cells. Furthermore, the mechanism of crystallization/interface engineering for the preparation of high-quality CsPbIBr2 films and efficient solar cells devices is emphasized. Finally, the development direction of further improving the PV performance and commercialization of mixed-halide IPSCs are summarized and prospected.
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Affiliation(s)
- Xin Liu
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Jie Li
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Xumei Cui
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Xiao Wang
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
| | - Dingyu Yang
- a, College of Optoelectronic Engineering, Chengdu University of Information Technology Chengdu 610225 China
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14
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Ma K, Gui Q, Liu C, Yang Y, Xing F, Di Y, Wen X, Jia B, Gan Z. Tunable Multicolor Fluorescence of Perovskite-Based Composites for Optical Steganography and Light-Emitting Devices. Research (Wash D C) 2022; 2022:9896548. [PMID: 36204245 PMCID: PMC9513829 DOI: 10.34133/2022/9896548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/30/2022] [Indexed: 11/19/2022] Open
Abstract
Multicolor fluorescence of mixed halide perovskites enormously enables their applications in photonics and optoelectronics. However, it remains an arduous task to obtain multicolor emissions from perovskites containing single halogen to avoid phase segregation. Herein, a fluorescent composite containing Eu-based metal-organic frameworks (MOFs), 0D Cs4PbBr6, and 3D CsPbBr3 is synthesized. Under excitations at 365 nm and 254 nm, the pristine composite emits blue (B) and red (R) fluorescence, which are ascribed to radiative defects within Cs4PbBr6 and 5D0→7FJ transitions of Eu3+, respectively. Interestingly, after light soaking in the ambient environment, the blue fluorescence gradually converts into green (G) emission due to the defect repairing and 0D-3D phase conversion. This permanent and unique photochromic effect enables anticounterfeiting and microsteganography with increased security through a micropatterning technique. Moreover, the RGB luminescence is highly stable after encapsulation by a transparent polymer layer. Thus, trichromatic light-emitting modules are fabricated by using the fluorescent composites as color-converting layers, which almost fully cover the standard color gamut. Therefore, this work innovates a strategy for construction of tunable multicolor luminescence by manipulating the radiative defects and structural dimensionality.
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Affiliation(s)
- Kewei Ma
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
| | - Qingfeng Gui
- College of Naval Architecture and Ocean Engineering, Jiangsu Maritime Institute, Nanjing 211170, China
| | - Cihui Liu
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
| | - Yunyi Yang
- Centre for Translational Atomaterials, School of Science, Swinburne University of Technology, John Street Hawthorn, VIC 3122, Australia
| | - Fangjian Xing
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
| | - Yunsong Di
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
| | - Xiaoming Wen
- Centre for Translational Atomaterials, School of Science, Swinburne University of Technology, John Street Hawthorn, VIC 3122, Australia
| | - Baohua Jia
- Centre for Translational Atomaterials, School of Science, Swinburne University of Technology, John Street Hawthorn, VIC 3122, Australia
- School of Science, RMIT University, Melbourne, 3000 VIC, Australia
| | - Zhixing Gan
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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15
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Erbing A, Philippe B, Park BW, Cappel UB, Rensmo H, Odelius M. Spatial microheterogeneity in the valence band of mixed halide hybrid perovskite materials. Chem Sci 2022; 13:9285-9294. [PMID: 36093010 PMCID: PMC9384462 DOI: 10.1039/d2sc03440a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/18/2022] [Indexed: 11/23/2022] Open
Abstract
The valence band of lead halide hybrid perovskites with a mixed I/Br composition is investigated using electronic structure calculations and complementarily probed with hard X-ray photoelectron spectroscopy. In the latter, we used high photon energies giving element sensitivity to the heavy lead and halide ions and we observe distinct trends in the valence band as a function of the I : Br ratio. Through electronic structure calculations, we show that the spectral trends with overall composition can be understood in terms of variations in the local environment of neighboring halide ions. From the computational model supported by the experimental evidence, a picture of the microheterogeneity in the valence band maximum emerges. The microheterogeneity in the valence band suggests that additional charge transport mechanisms might be active in lead mixed halide hybrid perovskites, which could be described in terms of percolation pathways.
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Affiliation(s)
- Axel Erbing
- Department of Physics, Stockholm University, AlbaNova University Center SE-106 91 Stockholm Sweden +46 8 5537 8601 +46 8 5537 8713
| | - Bertrand Philippe
- Department of Physics and Astronomy, Uppsala University Box 516 SE-751 20 Uppsala Sweden
| | - Byung-Wook Park
- Department of Physics and Astronomy, Uppsala University Box 516 SE-751 20 Uppsala Sweden
- Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology 50 UNIST-gil, Eonyang-eup, Ulju-gun Ulsan 44919 Korea
| | - Ute B Cappel
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology SE-100 44 Stockholm Sweden
| | - Håkan Rensmo
- Department of Physics and Astronomy, Uppsala University Box 516 SE-751 20 Uppsala Sweden
| | - Michael Odelius
- Department of Physics, Stockholm University, AlbaNova University Center SE-106 91 Stockholm Sweden +46 8 5537 8601 +46 8 5537 8713
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16
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Panda S, Soni A, Gupta V, Niranjan R, Panda D. PVDF-directed synthesis, stability and anion exchange of cesium lead bromide nanocrystals. Methods Appl Fluoresc 2022; 10. [PMID: 35961300 DOI: 10.1088/2050-6120/ac896b] [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: 03/30/2022] [Accepted: 08/12/2022] [Indexed: 11/12/2022]
Abstract
Photoluminescent perovskite nanocrystals are mostly used along with base materials such as polymers for material processing and large-scale production purpose. However, the role of polymer in crystal structure engineering and thereby dictating the emission properties of lead halide perovskite nanocrystals is poorly understood. First, we have developed a polymer-directed antisolvent method for synthesis of halide perovskite crystals at room temperature. The thermodynamic stabilities of crystals drive the formation of perovskite composite crystal of orthorhombic Cs4PbBr6 and monoclinic CsPbBr3. Surprisingly, hydrophobic polyvinylidene fluoride (PVDF) can reduce the size of perovskite crystals to nano dimensions even at room temperature. On the other hand, perovskite nanocrystals, CsPbBr3 synthesized by modified hot-injection method undergo rapid encapsulation in PVDF matrices. The size of the encapsulated nanocrystal in PVDF matrices ranges in 88 ± 32 nm. Three types of radiative recombination are predominantly operative in nanocrystals-doped polymer- surface defect caused radiative recombination (0.6 - 3 ns), exciton recombination (3 - 15 ns), and shallow trap assisted recombination (10 - 50 ns). The interface created at nanocrystal and polymer plays a decisive role in populating the shallow trap states in perovskite-polymer nanocomposite. These nanocrystals have been shown to undergo fast halide exchange in aqueous hydroiodic acid solution and possess remarkable enhancement of water-/photo-stability. This research would pave way for their greater use in hydrogen production and light-emitting devices.
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Affiliation(s)
- Suvadeep Panda
- Sciences & Humanities, Rajiv Gandhi Institute of Petroleum Technology, Bahadurpur, Harbanshganj, Jais, Amethi, Rae Bareli, Rae Bareli, Uttar Pradesh, 229304, INDIA
| | - Amritansh Soni
- Rajiv Gandhi Institute of Petroleum Technology, Bahadurpur, Harbanshganj, Jais, Amethi, Rae Bareli, Rae Bareli, Uttar Pradesh, 229304, INDIA
| | - Vidhu Gupta
- Rajiv Gandhi Institute of Petroleum Technology, Bahadurpur, Harbanshganj, Jais, Amethi, Rae Bareli, Rae Bareli, Uttar Pradesh, 229304, INDIA
| | - Raghvendra Niranjan
- Ewing Christian College , University of Allahabad, Gaughat, Prayagraj, Allahabad, Uttar Pradesh, 211002, INDIA
| | - Debashis Panda
- Sciences & Humanities, Rajiv Gandhi Institute of Petroleum Technology, Bahadurpur, Harbanshganj, Jais, Amethi, Rae Bareli, Rae Bareli, 229304, INDIA
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17
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Shi X, Kralj M, Zhang Y. Colorimetric paper test strips based on cesium lead bromide perovskite nanocrystals for rapid detection of ciprofloxacin hydrochloride. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:304002. [PMID: 35533658 DOI: 10.1088/1361-648x/ac6e1d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/09/2022] [Indexed: 06/14/2023]
Abstract
The detection of drugs containing hydrochloric salt with conventional methods is time consuming and expensive. In this work, upon exposure to ciprofloxacin hydrochloride at different concentrations, the emission from CsPbBr3NCs shifts to the blue from 513 nm to 442 nm. CsPbBr(3-x)ClxNCs are formed by the ion exchange and substitution of Br-and Cl-ions from surface to core of NCs. The first-principles calculations suggest that the substitution of Br-by Cl-ions plays a critical role in the tuning of the energy bandgap. The color of paper test strips changes immediately after exposure to different Ciproxan solutions. We propose that this rapid and portable method has a high potential application in other chloride salts for food safety.
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Affiliation(s)
- Xiaoqing Shi
- International Joint Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China
| | - Marko Kralj
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Zagreb 10000, Croatia
| | - Yang Zhang
- International Joint Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China
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18
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Guo Y, Lou Y, Chen J, Zhao Y. Lead-Free Cs 2 AgSbCl 6 Double Perovskite Nanocrystals for Effective Visible-Light Photocatalytic C-C Coupling Reactions. CHEMSUSCHEM 2022; 15:e202102334. [PMID: 34898013 DOI: 10.1002/cssc.202102334] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/12/2021] [Indexed: 06/14/2023]
Abstract
Lead halide perovskite nanocrystals (NCs) have been regarded as a promising potential photocatalyst, owing to their high molar extinction coefficient, low economic cost, adjustable light absorption range, and ample surface active sites. However, the toxicity of lead and its inherent instability in water and polar solvents could hinder their wide application in the field of photocatalysis. Herein, with α-alkylation of aldehydes as a model reaction, C-C bond-forming is demonstrated in high yield by using lead-free double perovskite Cs2 AgSbCl6 NCs under visible light irradiation. Moreover, the photocatalytic performance is simply improved by rational control of the surface ligands and a reaction mechanism involving a radical intermediate is proposed. Although the stability requires further amelioration, the results indicate the enormous potential of lead-free double perovskite NC photocatalysts for organic synthesis and chemical transformations.
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Affiliation(s)
- Yanmei Guo
- School of Chemistry and Chemical Engineering, Southeast University, 211189, Nanjing, P. R. China
| | - Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, 211189, Nanjing, P. R. China
| | - Jinxi Chen
- School of Chemistry and Chemical Engineering, Southeast University, 211189, Nanjing, P. R. China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
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19
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Ghaithan HM, Alahmed ZA, Qaid SMH, Aldwayyan AS. Density Functional Theory Analysis of Structural, Electronic, and Optical Properties of Mixed-Halide Orthorhombic Inorganic Perovskites. ACS OMEGA 2021; 6:30752-30761. [PMID: 34805703 PMCID: PMC8600628 DOI: 10.1021/acsomega.1c04806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Inorganic metal-halide perovskites hold a lot of promise for solar cells, light-emitting diodes, and lasers. A thorough investigation of their optoelectronic properties is ongoing. In this study, the accurate modified Becke Johnson generalized gradient approximation (mBJ-GGA) method without/with spin orbital coupling (SOC) implemented in the WIEN2k code was used to investigate the effect of mixed I/Br and Br/Cl on the electronic and optical properties of orthorhombic CsPb(I1-x Br x )3 and CsPb(Br1-x Cl x )3 perovskites, while the Perdew-Burke-Ernzerhof generalized gradient approximation (PBE-GGA) method was used to investigate their structural properties. The calculated band gap (E g) using the mBJ-GGA method was in good agreement with the experimental values reported, and it increased clearly from 1.983 eV for CsPbI3 to 2.420 and 3.325 eV for CsPbBr3 and CsPbCl3, respectively. The corrected mBJ + SOC E g value is 1.850 eV for CsPbI3, which increased to 2.480 and 3.130 eV for CsPbBr3 and CsPbCl3, respectively. The calculated photoabsorption coefficients show a blue shift in absorption, indicating that these perovskites are suitable for optical and optoelectronic devices.
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Affiliation(s)
- Hamid M. Ghaithan
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Zeyad. A. Alahmed
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saif M. H. Qaid
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdullah S. Aldwayyan
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
- King
Abdullah Institute for Nanotechnology, King
Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- K.A.CARE
Energy Research and Innovation Center at Riyadh, P.O. Box 2022, Riyadh 11454, Saudi Arabia
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20
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Bellani S, Bartolotta A, Agresti A, Calogero G, Grancini G, Di Carlo A, Kymakis E, Bonaccorso F. Solution-processed two-dimensional materials for next-generation photovoltaics. Chem Soc Rev 2021; 50:11870-11965. [PMID: 34494631 PMCID: PMC8559907 DOI: 10.1039/d1cs00106j] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Indexed: 12/12/2022]
Abstract
In the ever-increasing energy demand scenario, the development of novel photovoltaic (PV) technologies is considered to be one of the key solutions to fulfil the energy request. In this context, graphene and related two-dimensional (2D) materials (GRMs), including nonlayered 2D materials and 2D perovskites, as well as their hybrid systems, are emerging as promising candidates to drive innovation in PV technologies. The mechanical, thermal, and optoelectronic properties of GRMs can be exploited in different active components of solar cells to design next-generation devices. These components include front (transparent) and back conductive electrodes, charge transporting layers, and interconnecting/recombination layers, as well as photoactive layers. The production and processing of GRMs in the liquid phase, coupled with the ability to "on-demand" tune their optoelectronic properties exploiting wet-chemical functionalization, enable their effective integration in advanced PV devices through scalable, reliable, and inexpensive printing/coating processes. Herein, we review the progresses in the use of solution-processed 2D materials in organic solar cells, dye-sensitized solar cells, perovskite solar cells, quantum dot solar cells, and organic-inorganic hybrid solar cells, as well as in tandem systems. We first provide a brief introduction on the properties of 2D materials and their production methods by solution-processing routes. Then, we discuss the functionality of 2D materials for electrodes, photoactive layer components/additives, charge transporting layers, and interconnecting layers through figures of merit, which allow the performance of solar cells to be determined and compared with the state-of-the-art values. We finally outline the roadmap for the further exploitation of solution-processed 2D materials to boost the performance of PV devices.
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Affiliation(s)
- Sebastiano Bellani
- BeDimensional S.p.A., Via Lungotorrente Secca 30R, 16163 Genova, Italy.
- Istituto Italiano di Tecnologia, Graphene Labs, via Moreogo 30, 16163 Genova, Italy
| | - Antonino Bartolotta
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, Via F. Stagno D'alcontres 37, 98158 Messina, Italy
| | - Antonio Agresti
- CHOSE - Centre for Hybrid and Organic Solar Energy, University of Rome "Tor Vergata", via del Politecnico 1, 00133 Roma, Italy
| | - Giuseppe Calogero
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, Via F. Stagno D'alcontres 37, 98158 Messina, Italy
| | - Giulia Grancini
- University of Pavia and INSTM, Via Taramelli 16, 27100 Pavia, Italy
| | - Aldo Di Carlo
- CHOSE - Centre for Hybrid and Organic Solar Energy, University of Rome "Tor Vergata", via del Politecnico 1, 00133 Roma, Italy
- L.A.S.E. - Laboratory for Advanced Solar Energy, National University of Science and Technology "MISiS", 119049 Leninskiy Prosect 6, Moscow, Russia
| | - Emmanuel Kymakis
- Department of Electrical & Computer Engineering, Hellenic Mediterranean University, Estavromenos 71410 Heraklion, Crete, Greece
| | - Francesco Bonaccorso
- BeDimensional S.p.A., Via Lungotorrente Secca 30R, 16163 Genova, Italy.
- Istituto Italiano di Tecnologia, Graphene Labs, via Moreogo 30, 16163 Genova, Italy
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21
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Steele JA, Prakasam V, Huang H, Solano E, Chernyshov D, Hofkens J, Roeffaers MBJ. Trojans That Flip the Black Phase: Impurity-Driven Stabilization and Spontaneous Strain Suppression in γ-CsPbI 3 Perovskite. J Am Chem Soc 2021; 143:10500-10508. [PMID: 34196547 DOI: 10.1021/jacs.1c05046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The technological progress and widespread adoption of all-organic CsPbI3 perovskite devices is hampered by its thermodynamic instability at room temperature. Because of its inherent tolerance toward deep trap formation, there has been no shortage to exploring which dopants can improve the phase stability. While the relative size of the dopant is important, an assessment of the literature suggests that its relative size and impact on crystal volume do not always reveal what will beneficially shift the phase transition temperature. In this perspective, we analyze the changes in crystal symmetry of CsPbI3 perovskite as it transforms from a thermodynamically stable high-temperature cubic (α) structure into its distorted low-temperature tetragonal (β) and unstable orthorhombic (γ) perovskite structures. Quantified assessment of the symmetry-adapted strains which are introduced due to changes in temperature and composition show that the stability of γ-CsPbI3 is best rationalized from the point of view of crystal symmetry. In particular, improved thermal-phase stability is directly traced to the suppression of spontaneous strain formation and increased crystal symmetry at room temperature.
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Affiliation(s)
- Julian A Steele
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
| | - Vittal Prakasam
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
| | - Haowei Huang
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
| | - Eduardo Solano
- NCD-SWEET Beamline, ALBA Synchrotron Light Source, 08290, Cerdanyola del Vallès, Barcelona, Spain
| | - Dmitry Chernyshov
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium.,Max Plank Institute for Polymer Research, Mainz, D-55128, Germany
| | - Maarten B J Roeffaers
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
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22
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Li M, Zhang X, Yang P. Controlling the growth of a SiO 2 coating on hydrophobic CsPbBr 3 nanocrystals towards aqueous transfer and high luminescence. NANOSCALE 2021; 13:3860-3867. [PMID: 33566050 DOI: 10.1039/d0nr08325a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Silica coating can effectively solve the stability issue of lead halide perovskite nanomaterials. However, it is difficult to achieve aqueous SiO2 coating on hydrophobic CsPbBr3 nanocrystals (NCs). In this paper, the hydrolysis process of tetramethoxysilane was controlled to get a homogeneous SiO2 coating or a NC/SiO2 Janus structure. In step 1, the Cs4PbBr6 NCs were silanized using partially hydrolyzed tetramethoxysilane (PH-TMOS). During this process, the Si-OH groups which came from PH-TMOS were absorbed onto the surface of the Cs4PbBr6 NCs with the removal of hydrophobic oleic acid (OA) ligands. In step 2, phase transformation from Cs4PbBr6 to CsPbBr3 occurred owing to the injection of water. Meanwhile, further hydrolysis of TMOS took place and generated cross-linked Si-O-Si. Because the silanization in step 1 created lots of growth sites, the condensation of SiO2 was not limited to the interface between water and hexane. After growing for 12 h, the fully covered CsPbBr3@SiO2 capsules were prepared. The anion exchange reactions of the CsPbBr3@SiO2 capsules were studied. Only one even and symmetric PL peak was apparent during the anion exchange process, which was different from the bare CsPbBr3 NCs. This result demonstrated that the SiO2 shell can act as a buffer layer to block the direct contact of CsPbBr3 with the excess PbBr2 precursor in solution. Compared with the CsPbBr3 NCs, CsPbBr3@SiO2 showed better stability in polar solvent and air. A bright green emission was also observed under UV light after 90 days. The successful preparation of CsPbBr3@SiO2 capsules with enhanced stability paves the way for the further development of lead halide perovskite nanomaterials.
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Affiliation(s)
- Meng Li
- School of Material Science & Engineering, University of Jinan, No. 336, Nanxinzhuangxi Rd, Jinan, 250022, P. R. China.
| | - Xiao Zhang
- Fuels and Energy Technology Institute and WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6845, Australia.
| | - Ping Yang
- School of Material Science & Engineering, University of Jinan, No. 336, Nanxinzhuangxi Rd, Jinan, 250022, P. R. China.
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Yuan J, Bi C, Xi J, Guo R, Tian J. Gradient-Band Alignment Homojunction Perovskite Quantum Dot Solar Cells. J Phys Chem Lett 2021; 12:1018-1024. [PMID: 33470817 DOI: 10.1021/acs.jpclett.0c03628] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The inorganic perovskite CsPbI3 that exists in the form of a quantum dot (QD) shows a stable cubic structure, attracting much attention for its application in solar cells. However, too many grain boundaries in the perovskite QD (PQD) layer block the transport of carriers, resulting in the potential loss of solar cells. Herein, we devise a gradient-band alignment (GBA) homojunction, which is constructed from three layers of PQDs with different band-gaps to form a gradient energy alignment. The GBA structure facilitated the charge extraction and increased the carrier diffusion length of the PQD layer because of the additional driving force for the electrons. In addition, the homojunction made from the same substance could minimize the lattice mismatch of the active layer. As a result, the champion solar cell based on the GBA homojunction layer achieved a high open voltage VOC of 1.25 V and a power conversion efficiency (PCE) of 13.2%.
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Affiliation(s)
- Jifeng Yuan
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Chenghao Bi
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiahao Xi
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Ruiqi Guo
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianjun Tian
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
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24
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Tong J, Jiang Q, Zhang F, Kang SB, Kim DH, Zhu K. Wide-Bandgap Metal Halide Perovskites for Tandem Solar Cells. ACS ENERGY LETTERS 2021; 6:232-248. [PMID: 38533481 PMCID: PMC10961837 DOI: 10.1021/acsenergylett.0c02105] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Metal halide perovskite solar cells (PSCs) have become the most promising new-generation solar cell technology. To date, perovskites also represent the only polycrystalline thin-film absorber technology that has enabled >20% efficiency for wide-bandgap solar cells, making wide-bandgap PSCs uniquely positioned to enable high-efficiency and low-cost tandem solar cell technologies by coupling wide-bandgap perovskites with low-bandgap absorbers. In this Focus Review, we highlight recent research progress on developing wide-bandgap PSCs, including the key mechanisms associated with efficiency loss and instability as well as strategies for overcoming these challenges. We also discuss recent accomplishments and research trends on using wide-bandgap PSCs in perovskite-based tandem configurations, including perovskite/perovskite, perovskite/Si, perovskite/CIGS, and other emerging tandem technologies.
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Affiliation(s)
- Jinhui Tong
- Chemistry
and Nanoscience Center, National Renewable
Energy Laboratory, Golden, Colorado 80401, United States
| | - Qi Jiang
- Chemistry
and Nanoscience Center, National Renewable
Energy Laboratory, Golden, Colorado 80401, United States
| | - Fei Zhang
- Chemistry
and Nanoscience Center, National Renewable
Energy Laboratory, Golden, Colorado 80401, United States
| | - Seok Beom Kang
- Department
of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Dong Hoe Kim
- Department
of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Kai Zhu
- Chemistry
and Nanoscience Center, National Renewable
Energy Laboratory, Golden, Colorado 80401, United States
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25
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Cho J, DuBose JT, Mathew PS, Kamat PV. Electrochemically induced iodine migration in mixed halide perovskites: suppression through chloride insertion. Chem Commun (Camb) 2021; 57:235-238. [PMID: 33305300 DOI: 10.1039/d0cc06217k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of chloride in improving the stability of mixed halide perovskites (MAPbClxBr0.5(1-x)I0.5(1-x))3 is probed using spectroelectrochemistry. The injection of holes into mixed halide perovskite films through applied anodic bias results in the selective migration of iodine with ultimate expulsion into the electrolyte. Increasing the Cl content (x = 0 to 0.1) in the mixed halide perovskite suppresses the iodine mobility and thus decreases the rate of its expulsion into the solution. Implications of iodine mobility induced by hole accumulation and its impact on overall stability is discussed.
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Affiliation(s)
- Junsang Cho
- Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
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26
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Liu Q, Liang W. How the Structures and Properties of Pristine and Anion Vacancy Defective Organic-Inorganic Hybrid Double Perovskites MA 2AgIn(Br xI 1-x) 6 Vary with Br Content x. J Phys Chem Lett 2020; 11:10315-10322. [PMID: 33227194 DOI: 10.1021/acs.jpclett.0c03137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This work is dedicated to theoretically investigating the mixed-halide direct band gap organic-inorganic hybrid double perovskites (OIHdPs), MA2AgIn(BrxI1-x)6, with and without anion vacancy point (AVP) defects. We calculate their structural and optoelectronic properties with different halide compositions and find that the effect of halide composition on the properties of MA2AgIn(BrxI1-x)6 is quite different from that on lead-bearing perovskites. All the vacancy-free I-bearing systems (x ≠ 1) have nearly the same direct band gap width and carrier activity with MAPbI3. The Br-rich systems (x > 0.50) are relatively thermodynamical stable and not prone to spontaneous anion segregation and show a strong "self-tolerance" feature toward the inherit defects as well. With these distinguished properties, we are able to conclude that MA2AgIn(BrxI1-x)6 with 0.50 < x < 1 are promising candidates for Pb-free photovoltaic materials. This Letter provides a detailed microscopic understanding of the vacancy-induced band distortion in lead-free heterovalent substitution OIHdPs and has some guiding significance for molecular design of nontoxic photovoltaic materials.
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Affiliation(s)
- Qi Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People's Republic of China
| | - WanZhen Liang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People's Republic of China
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27
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Cen G, Xia Y, Zhao C, Fu Y, An Y, Yuan Y, Shi T, Mai W. Precise Phase Control of Large-Scale Inorganic Perovskites via Vapor-Phase Anion-Exchange Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2005226. [PMID: 33258312 DOI: 10.1002/smll.202005226] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/23/2020] [Indexed: 06/12/2023]
Abstract
Anion exchange offers great flexibility and high precision in phase control, compositional engineering, and optoelectronic property tuning. Different from previous successful anion exchange process in liquid solution, herein, a vapor-phase anion-exchange strategy is developed to realize the precise phase and bandgap control of large-scale inorganic perovskites by using gas injection cycle, producing some perovskites such as CsPbCl3 which has never been reported in thin film morphology. Ab initio calculations also provide the insightful mechanism to understand the impact of anion exchange on tuning the electronic properties and optimizing the structural stability. Furthermore, because of precise control of specific atomic concentrations, intriguing tunable photoluminescence is observed and photodetectors with tunable photoresponse edge from green to ultraviolet light can be realized accurately with an ultrahigh spectral resolution of 1 nm. Therefore, a new, universal vapor-phase anion exchange method is offered for inorganic perovskite with fine-tunable optoelectronic properties.
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Affiliation(s)
- Guobiao Cen
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Yufan Xia
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Chuanxi Zhao
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Yong Fu
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Yipeng An
- School of Physics & International United Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Ye Yuan
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Tingting Shi
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Wenjie Mai
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
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Wang Y, Chen Y, Zhang T, Wang X, Zhao Y. Chemically Stable Black Phase CsPbI 3 Inorganic Perovskites for High-Efficiency Photovoltaics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001025. [PMID: 32964519 DOI: 10.1002/adma.202001025] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/27/2020] [Indexed: 05/06/2023]
Abstract
Research on chemically stable inorganic perovskites has achieved rapid progress in terms of high efficiency exceeding 19% and high thermal stabilities, making it one of the most promising candidates for thermodynamically stable and high-efficiency perovskite solar cells. Among those inorganic perovskites, CsPbI3 with good chemical components stability possesses the suitable bandgap (≈1.7 eV) for single-junction and tandem solar cells. Comparing to the anisotropic organic cations, the isotropic cesium cation without hydrogen bond and cation orientation renders CsPbI3 exhibit unique optoelectronic properties. However, the unideal tolerance factor of CsPbI3 induces the challenges of different crystal phase competition and room temperature phase stability. Herein, the latest important developments regarding understanding of the crystal structure and phase of CsPbI3 perovskite are presented. The development of various solution chemistry approaches for depositing high-quality phase-pure CsPbI3 perovskite is summarized. Furthermore, some important phase stabilization strategies for black phase CsPbI3 are discussed. The latest experimental and theoretical studies on the fundamental physical properties of photoactive phase CsPbI3 have deepened the understanding of inorganic perovskites. The future development and research directions toward achieving highly stable CsPbI3 materials will further advance inorganic perovskite for highly stable and efficient photovoltaics.
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Affiliation(s)
- Yong Wang
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yuetian Chen
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Taiyang Zhang
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xingtao Wang
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200240, China
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Yang J. Composition-dependent chemical and structural stabilities of mixed tin-lead inorganic halide perovskites. Phys Chem Chem Phys 2020; 22:19787-19794. [PMID: 32844822 DOI: 10.1039/d0cp03170d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Alloying tin into lead-based halide perovskites is one of the strategies to reduce the chemical toxicities associated with lead-containing compounds, while retaining comparable physical properties. However, tin-based compounds possess their own shortcomings, with the most critical ones being their increased thermodynamic tendencies towards oxidative degradation, as well as vibrational anharmonicities due to the presence of shallow Sn-5s2 lone-pair electrons. Hereby, we performed density-functional-theory calculations to systematically examine the composition-dependent chemical and structural stabilities for Cs(PbxSn1-x)X3 (X = Cl, Br and I) alloys. We found that oxidative degradation to rhombohedral Cs2SnX6, SnO2 and cubic CsSnX3 tends to be the most favored pathway with no observable composition-dependent 'bowing behaviour', the latter is primarily governed by the bowing-effects in the demixing energies which are generated when the perovskite alloy phase-segregates into the two cubic end-members, which are two orders of magnitude smaller. Potential surface energy scans for the off-center B-site ion displacements further reveal the nonlinearity in the change of vibrational anharmonicity with respect to a linear change of Sn concentrations. Such nonlinearity is strongly modulated by the nature of the halide ions, in order to minimize the exchange repulsion between the charge densities of Sn-5s2 lone pairs and the octahedrally coordinating halogen anions.
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Affiliation(s)
- Jack Yang
- Materials and Manufacturing Futures Institute, School of Material Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia. and Australian Nuclear Science and Technology Organization, New Illawarra Rd, Lucas Heights, New South Wales, 2234, Australia
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30
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Das U, Das D, Paul B, Rabha T, Pattanayak S, Kanjilal A, Bhattacharjee S, Sarkar P, Roy A. Induced Vacancy-Assisted Filamentary Resistive Switching Device Based on RbPbI 3-xCl x Perovskite for RRAM Application. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41718-41727. [PMID: 32830960 DOI: 10.1021/acsami.0c10123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Halide perovskite (HP) materials are actively researched for resistive switching (RS) memory devices due to their current-voltage hysteresis along with low-temperature processability, superior charge mobility, and simple fabrication. In this study, all-inorganic RbPbI3 perovskite has been doped with Cl in the halide site and incorporated as a switching media in the Ag/RbPbI3-xClx/ITO structure, since pure RbPbI3 is nonswitchable. Five compositions of the RbPbI3-xClx (x = 0, 0.3, 0.6, 0.9, and 1.2) films are fabricated, and the conductivity was found to be increasing upon increase in Cl concentration, as revealed by dielectric and I-V measurements. The device with a 20% chloride-substituted film exhibits a higher on/off ratio, extended endurance, long retention, and high-density storage ability. Finally, a plausible explanation of the switching mechanism from iodine vacancy-mediated growth of conducting filaments (CFs) is provided using conductive atomic force microscopy (c-AFM). The c-AFM measurements reveal that pure RbPbI3 is insulating in nature, whereas Cl-doped films demonstrate resistive switching behavior.
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Affiliation(s)
- Ujjal Das
- Department of Physics, National Institute of Technology Silchar, Silchar 788010, India
| | - Dip Das
- Department of Physics, School of Natural Sciences, Shiv Nadar University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201 314, India
| | - Bappi Paul
- Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Tridip Rabha
- Department of Physics, National Institute of Technology Silchar, Silchar 788010, India
| | - Soumya Pattanayak
- Department of Electronics and Instrumentation Engineering, National Institute of Technology Silchar, Silchar 788010, India
| | - Aloke Kanjilal
- Department of Physics, School of Natural Sciences, Shiv Nadar University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201 314, India
| | - Snigdha Bhattacharjee
- Department of Physics, National Institute of Technology Silchar, Silchar 788010, India
| | - Pranab Sarkar
- Department of Applied Science and Humanities, Assam University, Silchar 788011, India
| | - Asim Roy
- Department of Physics, National Institute of Technology Silchar, Silchar 788010, India
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31
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Chen K, Wang C, Peng Z, Qi K, Guo Z, Zhang Y, Zhang H. The chemistry of colloidal semiconductor nanocrystals: From metal-chalcogenides to emerging perovskite. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213333] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Wang H, Li H, Cai W, Zhang P, Cao S, Chen Z, Zang Z. Challenges and strategies relating to device function layers and their integration toward high-performance inorganic perovskite solar cells. NANOSCALE 2020; 12:14369-14404. [PMID: 32617550 DOI: 10.1039/d0nr03408h] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Parallel to the flourishing of inorganic-organic hybrid perovskite solar cells (PSCs), the development of inorganic cesium-based metal halide PSCs (CsPbX3) is accelerating, with power conversion efficiency (PCE) values of over 20% being obtained. Although CsPbX3 possesses numerous merits, such as superior thermal stability and great potential for use in tandem solar cells, severe challenges remain, such as its phase instability, trap state density, and absorption range limitations, hindering further performance improvements and commercialization. This review summarizes challenges and strategies relating to each device functional layer and their integration for the purposes of performance improvement and commercialization, utilizing the fundamental configuration of a perovskite photo-absorption layer, electron transport layer (ETL), and hole transport layer (HTL ). In detail, we first analyze comprehensively strategies for designing high-quality CsPbX3 perovskite films, including precursor engineering, element doping, and post-treatment, followed by discussing the precise control of the CsPbX3 film fabrication process. Then, we introduce and analyze the carrier dynamics and interfacial modifications of inorganic ETLs, such as TiO2, SnO2, ZnO, and other typical organic ETLs with p-i-n configuration. The pros and cons of inorganic and organic HTLs are then discussed from the viewpoints of stability and band structure. Subsequently, promising candidates, i.e., HTL-free carbon-electrode-based inorganic CsPbX3 PSCs, that meet the "golden triangle" criteria used by the PSC community are reviewed, followed by discussion of other obstacles, such as hysteresis and large-scale fabrication, that lie on the road toward PSC commercialization. Finally, some perspectives relating to solutions to development bottlenecks are proposed, with the attempt to gain insight into CsPbX3 PSCs and inspire future research prospects.
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Affiliation(s)
- Huaxin Wang
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.
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Kundu K, Acharyya P, Maji K, Sasmal R, Agasti SS, Biswas K. Synthesis and Localized Photoluminescence Blinking of Lead‐Free 2D Nanostructures of Cs
3
Bi
2
I
6
Cl
3
Perovskite. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005966] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kaushik Kundu
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Paribesh Acharyya
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Krishnendu Maji
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Ranjan Sasmal
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Sarit S. Agasti
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Kanishka Biswas
- New Chemistry Unit and School of Advanced Materials Bangalore 560064 India
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
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34
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Kundu K, Acharyya P, Maji K, Sasmal R, Agasti SS, Biswas K. Synthesis and Localized Photoluminescence Blinking of Lead-Free 2D Nanostructures of Cs 3 Bi 2 I 6 Cl 3 Perovskite. Angew Chem Int Ed Engl 2020; 59:13093-13100. [PMID: 32374512 DOI: 10.1002/anie.202005966] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Indexed: 11/10/2022]
Abstract
Two-dimensional (2D) lead-free halide perovskites have generated enormous perception in the field of optoelectronics due to their fascinating optical properties. However, an in-depth understanding on their shape-controlled charge-carrier recombination dynamics is still lacking, which could be resolved by exploring the photoluminescence (PL) blinking behaviour at the single-particle level. Herein, we demonstrate, for the first time, the synthesis of nanocrystals (NCs) and 2D nanosheets (NSs) of layered mixed halide, Cs3 Bi2 I6 Cl3 , by solution-based method. We applied fluorescence microscopy and super-resolution optical imaging at single-particle level to investigate their morphology-dependent PL properties. Narrow emission line widths and passivation of non-radiative defects were evidenced for 2D layered nanostructures, whereas the activation of shallow trap states was recognized at 77 K. Interestingly, individual NCs were found to display temporal intermittency (blinking) in PL emission. On the other hand, NS showed temporal PL intensity fluctuations within localized domains of the crystal. In addition, super-resolution optical image of the NS from localization-based method showed spatial inhomogeneity of the PL intensity within perovskite crystal.
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Affiliation(s)
- Kaushik Kundu
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Paribesh Acharyya
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Krishnendu Maji
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Ranjan Sasmal
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Sarit S Agasti
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Kanishka Biswas
- New Chemistry Unit and School of Advanced Materials, Bangalore, 560064, India.,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
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35
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Chen Y, Liu Y, Hong M. Cation-doping matters in caesium lead halide perovskite nanocrystals: from physicochemical fundamentals to optoelectronic applications. NANOSCALE 2020; 12:12228-12248. [PMID: 32507865 DOI: 10.1039/d0nr02922j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
All-inorganic caesium lead halide perovskite nanocrystals (PeNCs) with different dimensionalities have recently fascinated the research community due to their extraordinary optoelectronic properties including tunable bandgaps over the entire visible spectral region, high photoluminescence quantum yields (PLQYs) close to unity and narrow emission line widths down to 10-20 nm, making them particularly suitable as promising candidates for numerous applications ranging from light-emitting diodes (LEDs), solar cells to scintillators. Despite the considerable progress made in the past six years, the real-world applications of caesium lead halide PeNCs themselves especially in the category of CsPbX3 (X = Cl, Br and I) are still restricted by their labile crystal lattices and downgraded luminescence when exposed to ambient air conditions. Recent experimental and theoretical studies on cation doping have proven to be an effective way to significantly improve the physicochemical properties of cesium lead halide PeNCs, which would have profound implications for a range of applications. In this review, we provide a brief overview of the most recent advances in cation-doped all-inorganic caesium lead halide PeNCs, aimed at developing high-performance and long-term stable optoelectronic and photovoltaic devices, which covers areas from their fundamental considerations of cation doping, controlled synthesis methodology and novel physicochemical properties to the optoelectronic applications with an emphasis on perovskite-based LEDs and solar cells. And finally, some possible directions of future efforts toward this active research field are also proposed.
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Affiliation(s)
- Yameng Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. and University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongsheng Liu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. and University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Maochun Hong
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. and University of the Chinese Academy of Sciences, Beijing, 100049, China
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36
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Patil JV, Mali SS, Hong CK. Efficient and Stable All-Inorganic Niobium-Incorporated CsPbI 2Br-Based Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27176-27183. [PMID: 32484326 DOI: 10.1021/acsami.0c04577] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Inorganic cesium lead halide perovskite (CsPbX3) is a promising light-harvesting material to increase the thermal stability and the device performance as compared to the organic-inorganic hybrid counterparts. However, the photoactive stability at ambient conditions is an unresolved issue. Here, we studied the influence of Nb5+ ions' incorporation in the CsPbI2Br perovskite processed at ambient conditions. Our results exhibited that 0.5% Nb-incorporated CsPb1-xNbxI2Br (herein x = 0.005) thin films show excellent uniformity and improved grain size because of the optimum concentration of Nb5+ doping and hot-air flow. The improved grain size and uniform film thickness deliver a superior interface between the CsPb1-xNbxI2Br layer and the hole-transporting material. The fabricated all-inorganic perovskite solar cell (IPVSC) devices exhibited the Nb5+ cation incorporation which enables decreased charge recombination, leading to negligible hysteresis. The champion device produces an open-circuit voltage (VOC) as high as 1.317 V. The IPVSC device containing a CsPb0.995Nb0.005I2Br composition delivers the highest power conversion efficiency of 16.45% under a 100 mW cm-2 illumination and exhibits a negligible efficiency loss over 96 h in ambient conditions.
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Affiliation(s)
- Jyoti V Patil
- Optoelectronic Convergence Research Center, Chonnam National University, Gwangju 61186, Korea
- Polymer Energy Materials Laboratory, School of Advanced Chemical Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Sawanta S Mali
- Polymer Energy Materials Laboratory, School of Advanced Chemical Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Chang Kook Hong
- Optoelectronic Convergence Research Center, Chonnam National University, Gwangju 61186, Korea
- Polymer Energy Materials Laboratory, School of Advanced Chemical Engineering, Chonnam National University, Gwangju 61186, Korea
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37
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Guo S, Liu YF, Liu YS, Feng J, Sun HB. Improved performance of pure red perovskite light-emitting devices based on CsPb(Br 1-xI x) 3 with variable content of iodine and bromine. OPTICS LETTERS 2020; 45:2724-2727. [PMID: 32412451 DOI: 10.1364/ol.393288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/12/2020] [Indexed: 06/11/2023]
Abstract
All-inorganic cubic α-CsPbI3 perovskite for red perovskite light-emitting device (PeLED) applications is suffering from a phase transition. Unstable black α phase tends to transit to yellow δ phase under ambient conditions, which results in poor performance of the CsPbI3-based PeLEDs. Partial replacement of iodine anion with a comparatively smaller bromine anion in the perovskite film can effectively adjust the Goldschmidt tolerance factor and stabilize the α-phase. A phase-stable CsPb(Br1-xIx)3 perovskite has been obtained at low annealing temperature of 50°C by tuning the iodine-to-bromine ratios. A PeLED with pure red emission based on the CsPb(Br0.43I0.57)3 perovskite has been demonstrated. The maximum luminance and efficiency were 2200cd/m2 and 0.38 cd/A, respectively. Moreover, the PTAA layer was introduced between the PEDOT:PSS and perovskite film to improve the surface morphologies of perovskite. As a result, red PeLEDs with a maximum luminance of 2765cd/m2 have been achieved.
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38
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Zhou W, Zhao Y, Wang E, Li Q, Lou S, Wang J, Li X, Lian Q, Xie Q, Zhang RQ, Zeng H. Charge Transfer Boosting Moisture Resistance of Seminude Perovskite Nanocrystals via Hierarchical Alumina Modulation. J Phys Chem Lett 2020; 11:3159-3165. [PMID: 32243165 DOI: 10.1021/acs.jpclett.0c00811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Boosting the stability improvement of cesium lead halide (CsPbX3) perovskite nanocrystals (NCs) remains a serious challenge. In this work, CsPbX3 NCs are effectively anchored on a hierarchical (h-) alumina (Al2O3) substrate to form seminude CsPbX3@h-Al2O3 composites, which can emit strong green light even after being stored in water for 30 days, in sharp contrast to the pure CsPbBr3 NCs. Other oxides, such as TiO2, ZnO, and SiO2, have no boosting effect on the moisture resistance of perovskite NCs. Subsequent density functional theory calculations reveal a significant charge transfer and strong Coulomb attraction between CsPbBr3 and Al2O3. The substantial charge transfer via alumina substrate modulation not only can enhance the internal stability of CsPbBr3 but also can cause CsPbBr3 to be insensitive to water adsorption. These findings are expected to deepen our understanding of improving the stability of CsPbBr3 NCs and shed light on the design of novel perovskite composites for long-term stable optoelectronic devices.
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Affiliation(s)
- Wenli Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yanling Zhao
- Department of Physics, City University of Hong Kong, Hong Kong SAR
| | - Ensheng Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Qingna Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Sunqi Lou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jing Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiaoming Li
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qing Lian
- School of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Qingji Xie
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Rui-Qin Zhang
- Department of Physics, City University of Hong Kong, Hong Kong SAR
- Beijing Computational Science Research Center, Beijing 100193, China
- Shenzhen JL Computational Science and Applied Research Institute (CSAR), Shenzhen 518110, China
| | - Haibo Zeng
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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39
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Wai RB, Ramesh N, Aiello CD, Raybin JG, Zeltmann SE, Bischak CG, Barnard E, Aloni S, Ogletree DF, Minor AM, Ginsberg NS. Resolving Enhanced Mn 2+ Luminescence near the Surface of CsPbCl 3 with Time-Resolved Cathodoluminescence Imaging. J Phys Chem Lett 2020; 11:2624-2629. [PMID: 32191469 DOI: 10.1021/acs.jpclett.0c00574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mn2+ doping of lead halide perovskites has garnered recent interest because it produces stable orange luminescence in tandem with perovskite emission. Here, we observe enhanced Mn2+ luminescence at the edges of Mn2+-doped CsPbCl3 perovskite microplates and suggest an explanation for its origin using the high spatiotemporal resolution of time-resolved cathodoluminescence (TRCL) imaging. We reveal two luminescent decay components that we attribute to two different Mn2+ populations. While each component appears to be present both near the surface and in the bulk, the origin of the intensity variation stems from a higher proportion of the longer lifetime component near the perovskite surface. We suggest that this higher emission is caused by an increased probability of electron-hole recombination on Mn2+ near the perovskite surface due to an increased trap concentration there. This observation suggests that such surface features have yet untapped potential to enhance emissive properties via control of surface-to-volume ratio.
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Affiliation(s)
- Rebecca B Wai
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
| | - Namrata Ramesh
- Department of Physics, University of California, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
| | - Clarice D Aiello
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jonathan G Raybin
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
| | - Steven E Zeltmann
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
| | - Connor G Bischak
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Edward Barnard
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Shaul Aloni
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - D Frank Ogletree
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew M Minor
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
| | - Naomi S Ginsberg
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Physics, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
- STROBE, NSF Science & Technology Center, Berkeley, California 94720, United States
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40
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Saidaminov MI, Williams K, Wei M, Johnston A, Quintero-Bermudez R, Vafaie M, Pina JM, Proppe AH, Hou Y, Walters G, Kelley SO, Tisdale WA, Sargent EH. Multi-cation perovskites prevent carrier reflection from grain surfaces. NATURE MATERIALS 2020; 19:412-418. [PMID: 32042078 DOI: 10.1038/s41563-019-0602-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 12/30/2019] [Indexed: 06/10/2023]
Abstract
The composition of perovskite has been optimized combinatorially such that it often contains six components (AxByC1-x-yPbXzY3-z) in state-of-art perovskite solar cells. Questions remain regarding the precise role of each component, and the lack of a mechanistic explanation limits the practical exploration of the large and growing chemical space. Here, aided by transient photoluminescence microscopy, we find that, in perovskite single crystals, carrier diffusivity is in fact independent of composition. In polycrystalline thin films, the different compositions play a crucial role in carrier diffusion. We report that methylammonium (MA)-based films show a high carrier diffusivity of 0.047 cm2 s-1, while MA-free mixed caesium-formamidinium (CsFA) films exhibit an order of magnitude lower diffusivity. Elemental composition studies show that CsFA grains display a graded composition. This curtails electron diffusion in these films, as seen in both vertical carrier transport and surface potential studies. Incorporation of MA leads to a uniform grain core-to-edge composition, giving rise to a diffusivity of 0.034 cm2 s-1 in CsMAFA films. A model that invokes competing crystallization processes allows us to account for this finding, and suggests further strategies to achieve homogeneous crystallization for the benefit of perovskite optoelectronics.
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Affiliation(s)
- Makhsud I Saidaminov
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Chemistry and Electrical & Computer Engineering, Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, British Columbia, Canada
| | - Kristopher Williams
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Mingyang Wei
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Andrew Johnston
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Rafael Quintero-Bermudez
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Maral Vafaie
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Joao M Pina
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Andrew H Proppe
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Yi Hou
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Grant Walters
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Shana O Kelley
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - William A Tisdale
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada.
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41
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Xu J, Boyd CC, Yu ZJ, Palmstrom AF, Witter DJ, Larson BW, France RM, Werner J, Harvey SP, Wolf EJ, Weigand W, Manzoor S, van Hest MFAM, Berry JJ, Luther JM, Holman ZC, McGehee MD. Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems. Science 2020; 367:1097-1104. [PMID: 32139537 DOI: 10.1126/science.aaz5074] [Citation(s) in RCA: 230] [Impact Index Per Article: 57.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/05/2019] [Accepted: 01/29/2020] [Indexed: 12/20/2022]
Abstract
Wide-band gap metal halide perovskites are promising semiconductors to pair with silicon in tandem solar cells to pursue the goal of achieving power conversion efficiency (PCE) greater than 30% at low cost. However, wide-band gap perovskite solar cells have been fundamentally limited by photoinduced phase segregation and low open-circuit voltage. We report efficient 1.67-electron volt wide-band gap perovskite top cells using triple-halide alloys (chlorine, bromine, iodine) to tailor the band gap and stabilize the semiconductor under illumination. We show a factor of 2 increase in photocarrier lifetime and charge-carrier mobility that resulted from enhancing the solubility of chlorine by replacing some of the iodine with bromine to shrink the lattice parameter. We observed a suppression of light-induced phase segregation in films even at 100-sun illumination intensity and less than 4% degradation in semitransparent top cells after 1000 hours of maximum power point (MPP) operation at 60°C. By integrating these top cells with silicon bottom cells, we achieved a PCE of 27% in two-terminal monolithic tandems with an area of 1 square centimeter.
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Affiliation(s)
- Jixian Xu
- Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA. .,National Renewable Energy Laboratory, Golden, CO 80401, USA.,CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Caleb C Boyd
- National Renewable Energy Laboratory, Golden, CO 80401, USA.,Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Zhengshan J Yu
- School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA
| | | | - Daniel J Witter
- Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA.,National Renewable Energy Laboratory, Golden, CO 80401, USA
| | - Bryon W Larson
- National Renewable Energy Laboratory, Golden, CO 80401, USA
| | - Ryan M France
- National Renewable Energy Laboratory, Golden, CO 80401, USA
| | - Jérémie Werner
- Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA.,National Renewable Energy Laboratory, Golden, CO 80401, USA
| | | | - Eli J Wolf
- National Renewable Energy Laboratory, Golden, CO 80401, USA.,Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - William Weigand
- School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA
| | - Salman Manzoor
- School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA
| | | | - Joseph J Berry
- National Renewable Energy Laboratory, Golden, CO 80401, USA
| | | | - Zachary C Holman
- School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA
| | - Michael D McGehee
- Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA. .,National Renewable Energy Laboratory, Golden, CO 80401, USA.,Materials Science and Engineering, University of Colorado, Boulder, CO 80309, USA
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42
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Yang RX, Tan LZ. Understanding size dependence of phase stability and band gap in CsPbI3 perovskite nanocrystals. J Chem Phys 2020; 152:034702. [DOI: 10.1063/1.5128016] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ruo Xi Yang
- Molecular Foundry, Lawrence Berkeley National Lab, Berkeley, California 94720, USA
| | - Liang Z. Tan
- Molecular Foundry, Lawrence Berkeley National Lab, Berkeley, California 94720, USA
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43
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Ahmed GH, Yin J, Bakr OM, Mohammed OF. Near-unity photoluminescence quantum yield in inorganic perovskite nanocrystals by metal-ion doping. J Chem Phys 2020; 152:020902. [PMID: 31941323 DOI: 10.1063/1.5131807] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The luminescence and charge transport properties of inorganic CsPbX3 perovskite nanocrystals (NCs) make them attractive candidates for various optoelectronic applications, such as lasing, X-ray imaging, light communication, and light-emitting diodes (LEDs). However, to realize cutting-edge device performance, high-quality NCs with high photoluminescence quantum yields (PLQYs) are essential. Therefore, substantial efforts and progress have been made to attain superior design/engineering and optimization of the inorganic NCs with a focus on surface quality, reduced nonradiative charge carrier recombination centers, and improved colloidal stabilities. Metal-ion doping has been proven to have a robust influence on the electronic band structure, PL behavior, and charge carrier recombination dynamics. Thus, in this perspective, we summarize the recent progress of the significant impact of metal cation doping on the optical properties, including the PL enhancement of CsPbCl3, CsPbBr3, and CsPbI3 perovskite NCs. Moreover, we shed light on the mechanism behind such improved properties. We conclude by recommending possible aspects and strategies to be further explored and considered for better utilization of these doped NCs in thin-film optoelectronic and energy conversion devices.
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Affiliation(s)
- Ghada H Ahmed
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jun Yin
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
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44
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Liang J, Han X, Yang JH, Zhang B, Fang Q, Zhang J, Ai Q, Ogle MM, Terlier T, Martí AA, Lou J. Defect-Engineering-Enabled High-Efficiency All-Inorganic Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1903448. [PMID: 31682043 DOI: 10.1002/adma.201903448] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/23/2019] [Indexed: 05/15/2023]
Abstract
The emergence of cesium lead iodide (CsPbI3 ) perovskite solar cells (PSCs) has generated enormous interest in the photovoltaic research community. However, in general they exhibit low power conversion efficiencies (PCEs) because of the existence of defects. A new all-inorganic perovskite material, CsPbI3 :Br:InI3 , is prepared by defect engineering of CsPbI3 . This new perovskite retains the same bandgap as CsPbI3 , while the intrinsic defect concentration is largely suppressed. Moreover, it can be prepared in an extremely high humidity atmosphere and thus a glovebox is not required. By completely eliminating the labile and expensive components in traditional PSCs, the all-inorganic PSCs based on CsPbI3 :Br:InI3 and carbon electrode exhibit PCE and open-circuit voltage as high as 12.04% and 1.20 V, respectively. More importantly, they demonstrate excellent stability in air for more than two months, while those based on CsPbI3 can survive only a few days in air. The progress reported represents a major leap for all-inorganic PSCs and paves the way for their further exploration in order to achieve higher performance.
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Affiliation(s)
- Jia Liang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX, 77005, USA
| | - Xiao Han
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Ji-Hui Yang
- Department of Physics, Fudan University, Shanghai, 200433, China
| | - Boyu Zhang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Qiyi Fang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Jing Zhang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Qing Ai
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Meredith M Ogle
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Tanguy Terlier
- Shared Equipment Authority, SIMS laboratory, Rice University, Houston, TX, 77005, USA
| | - Angel A Martí
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX, 77005, USA
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Jun Lou
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX, 77005, USA
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
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45
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Wang C, Chesman ASR, Yin W, Frazer L, Funston AM, Jasieniak JJ. Facile purification of CsPbX 3 (X = Cl -, Br -, I -) perovskite nanocrystals. J Chem Phys 2019; 151:121105. [PMID: 31575186 DOI: 10.1063/1.5123306] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
CsPbI3 perovskite nanocrystals are a promising optoelectronic material when stabilized in their cubic phase. While ongoing efforts have addressed this structural challenge through a variety of meta-stabilization approaches, the postsynthesis purification of these nanocrystal dispersions has remained a challenge. In this article, we undertake a detailed investigation into the chemical, optical, and structural changes that arise during purification of CsPbI3 nanocrystals. It is found that nanocrystal degradation can only be avoided through the judicious control of additives within each purification cycle. Under optimized additive-to-nanocrystal ratios, multiple purification cycles can be readily achieved, while retaining the quality and phase stability of the CsPbI3. This facile purification protocol ensures the preparation of high purity and high quality CsPbI3 nanocrystal inks that are suitable for better characterization or integration in optoelectronic devices. The approach has been generalized for CsPbX3 (X = Cl-, Br-, and I-).
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Affiliation(s)
- Chujie Wang
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Anthony S R Chesman
- CSIRO Manufacturing, Ian Wark Laboratories, Bayview Ave., Clayton, VIC 3168, Australia
| | - Wenping Yin
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Laszlo Frazer
- ARC Centre of Excellence in Exciton Science, School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Alison M Funston
- ARC Centre of Excellence in Exciton Science, School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Jacek J Jasieniak
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering, Monash University, Clayton, VIC 3800, Australia
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46
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Wang W, Tran R, Qu J, Liu Y, Chen C, Xu M, Chen Y, Ong SP, Wang L, Zhou W, Shao Z. Chlorine-Doped Perovskite Oxide: A Platinum-Free Cathode for Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35641-35652. [PMID: 31532199 DOI: 10.1021/acsami.9b07966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Triiodide/iodide (I3-/I-) redox couple-mediated solar cells, batteries, and electrochromic devices require highly efficient and stable electrocatalysts for I3- reduction reaction (IRR) to overcome performance limitations, whereas the widely used platinum (Pt) cathode for IRR has limitations of high price and unfavorable durability. In this work, we present a halogen element (chlorine) doping strategy to design low-cost perovskite-type electrocatalysts with enhanced IRR activity and stability. The dye-sensitized solar cell (DSSC) assembled by the LaFeO2.965-δCl0.035 cathode delivers an attractive power conversion efficiency (PCE) of 11.4% with a remarkable PCE enhancement factor of 23% compared with Pt, which is higher than most of the reported non-Pt DSSC cathodes. Attractively, LaFeO2.965-δCl0.035 displays superior IRR activity/stability and structural stability in the I3-/I--based electrolyte compared to pristine LaFeO3 because chlorine doping facilitates the creation of oxygen vacancies (active sites) and enhances surface acidity simultaneously. This study provides a new way for designing outstanding IRR electrocatalysts, which could be applied to many redox couple-mediated photo/electrochemical devices.
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Affiliation(s)
- Wei Wang
- WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE) , Curtin University , Perth , Western Australia 6845 , Australia
| | - Richard Tran
- Department of NanoEngineering , University of California San Diego , 9500 Gilman Dr , Mail Code 0448, La Jolla , California 92093-0448 , United States
| | - Jifa Qu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , Nanjing 210009 , China
| | - Yu Liu
- WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE) , Curtin University , Perth , Western Australia 6845 , Australia
| | - Chi Chen
- Department of NanoEngineering , University of California San Diego , 9500 Gilman Dr , Mail Code 0448, La Jolla , California 92093-0448 , United States
| | - Meigui Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , Nanjing 210009 , China
| | - Yubo Chen
- School of Material Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore
| | - Shyue Ping Ong
- Department of NanoEngineering , University of California San Diego , 9500 Gilman Dr , Mail Code 0448, La Jolla , California 92093-0448 , United States
| | - Lianzhou Wang
- School of Chemical Engineering and AIBN , The University of Queensland , St Lucia , Brisbane , Queensland 4072 , Australia
| | - Wei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , Nanjing 210009 , China
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE) , Curtin University , Perth , Western Australia 6845 , Australia
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , Nanjing 210009 , China
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47
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Tang B, Hu Y, Dong H, Sun L, Zhao B, Jiang X, Zhang L. An All‐Inorganic Perovskite‐Phase Rubidium Lead Bromide Nanolaser. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bing Tang
- Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Shanghai 201800 China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Yingjie Hu
- Key Laboratory of Advanced Functional Materials of NanjingNanjing Xiaozhuang University Nanjing 211171 China
| | - Hongxing Dong
- Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Shanghai 201800 China
| | - Liaoxin Sun
- National Lab for Infrared PhysicsShanghai Institute of Technical PhysicsChinese Academy of Sciences Shanghai 200083 China
| | - Binbin Zhao
- National Lab for Infrared PhysicsShanghai Institute of Technical PhysicsChinese Academy of Sciences Shanghai 200083 China
| | - Xiongwei Jiang
- Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Shanghai 201800 China
| | - Long Zhang
- Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Shanghai 201800 China
- IFSA Collaborative Innovation CenterShanghai Jiao Tong University Shanghai 200240 China
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48
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Tang B, Hu Y, Dong H, Sun L, Zhao B, Jiang X, Zhang L. An All‐Inorganic Perovskite‐Phase Rubidium Lead Bromide Nanolaser. Angew Chem Int Ed Engl 2019; 58:16134-16140. [DOI: 10.1002/anie.201910617] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Bing Tang
- Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
| | - Yingjie Hu
- Key Laboratory of Advanced Functional Materials of Nanjing Nanjing Xiaozhuang University Nanjing 211171 China
| | - Hongxing Dong
- Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
| | - Liaoxin Sun
- National Lab for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China
| | - Binbin Zhao
- National Lab for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China
| | - Xiongwei Jiang
- Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
| | - Long Zhang
- Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
- IFSA Collaborative Innovation Center Shanghai Jiao Tong University Shanghai 200240 China
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49
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Ng CK, Wang C, Jasieniak JJ. Synthetic Evolution of Colloidal Metal Halide Perovskite Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:11609-11628. [PMID: 31256589 DOI: 10.1021/acs.langmuir.9b00855] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal halide perovskite semiconductor nanocrystals have emerged as a lucrative class of materials for many optoelectronic applications. By leveraging the synthetic toolboxes developed from decades of research into more traditional semiconductor nanocrystals, remarkable progress has been made across these materials in terms of their structural, compositional, and optoelectronic control. Here, we review this progress in terms of their underlying formation stages, synthetic approaches, and postsynthetic treatment steps. This assessment highlights the rapidly maturing nature of the perovskite nanocrystal field, particularly with regard to their lead-based derivatives. It further demonstrates that significant challenges remain around precisely controlling their nucleation and growth processes. In going forward, a deeper understanding of the role of precursors and ligands will significantly bolster the versatility in the size, shape, composition, and functional properties of these exciting materials.
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Affiliation(s)
- Chun Kiu Ng
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering , Monash University , Clayton , VIC 3800 , Australia
| | - Chujie Wang
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering , Monash University , Clayton , VIC 3800 , Australia
| | - Jacek J Jasieniak
- ARC Centre of Excellence in Exciton Science, Department of Materials Science and Engineering, Faculty of Engineering , Monash University , Clayton , VIC 3800 , Australia
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50
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Wang Y, Dar MI, Ono LK, Zhang T, Kan M, Li Y, Zhang L, Wang X, Yang Y, Gao X, Qi Y, Grätzel M, Zhao Y. Thermodynamically stabilized β-CsPbI3–based perovskite solar cells with efficiencies >18%. Science 2019; 365:591-595. [DOI: 10.1126/science.aav8680] [Citation(s) in RCA: 710] [Impact Index Per Article: 142.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 05/16/2019] [Accepted: 07/09/2019] [Indexed: 12/20/2022]
Abstract
Although β-CsPbI3 has a bandgap favorable for application in tandem solar cells, depositing and stabilizing β-CsPbI3 experimentally has remained a challenge. We obtained highly crystalline β-CsPbI3 films with an extended spectral response and enhanced phase stability. Synchrotron-based x-ray scattering revealed the presence of highly oriented β-CsPbI3 grains, and sensitive elemental analyses—including inductively coupled plasma mass spectrometry and time-of-flight secondary ion mass spectrometry—confirmed their all-inorganic composition. We further mitigated the effects of cracks and pinholes in the perovskite layer by surface treating with choline iodide, which increased the charge-carrier lifetime and improved the energy-level alignment between the β-CsPbI3 absorber layer and carrier-selective contacts. The perovskite solar cells made from the treated material have highly reproducible and stable efficiencies reaching 18.4% under 45 ± 5°C ambient conditions.
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