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Yi C, Zhang G, Lu R, Wang Z, Wang Y, Cao X, Ni K, Chen N, Zheng G, Huang W, Wang J. High Current Efficiency Red Perovskite Light-Emitting Diodes Meeting Rec. 2020 Standard. NANO LETTERS 2024; 24:10196-10201. [PMID: 39132984 DOI: 10.1021/acs.nanolett.4c02517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Cesium lead iodide light-emitting diodes (LEDs) are attractive for displays due to their Rec. 2020 red standard compliance. However, achieving high current efficiencies (CEs), which is important for displays, is challenging because their emission spectrum is near the tail of the photopic luminosity function. Substituting some iodine with bromine can improve CEs by enlarging the bandgap, but defects easily form in iodine-bromine mixed perovskites. Here, we successfully reduced defect formation by adding organic ammonium salts and zwitterions. The organic ammonium salts do not form low-dimensional perovskites under the hydrogen bonding interaction of zwitterions. Instead, they passivate the cesium vacancy by forming new hydrogen bonds after perovskite crystallization. This approach leads to a red perovskite LED with a high CE of 12.8 cd A-1 and a peak external quantum efficiency of 20.3%, meeting the Rec. 2020 standard. It can be extended to large-area devices (2500 mm2) without a significant efficiency loss.
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Affiliation(s)
- Chang Yi
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Guolin Zhang
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Runqing Lu
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Zekun Wang
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Yujing Wang
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Xuanxuan Cao
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Kaijie Ni
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Nana Chen
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Guanhaojie Zheng
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, People's Republic of China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
- Shaanxi Institute of Flexible Electronics (SIFE), Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, People's Republic of China
| | - Jianpu Wang
- Key Laboratory of Flexible Electronics (KLOFE), School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
- School of Materials Science and Engineering & School of Microelectronics and Control Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
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Simenas M, Gagor A, Banys J, Maczka M. Phase Transitions and Dynamics in Mixed Three- and Low-Dimensional Lead Halide Perovskites. Chem Rev 2024; 124:2281-2326. [PMID: 38421808 PMCID: PMC10941198 DOI: 10.1021/acs.chemrev.3c00532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 12/15/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024]
Abstract
Lead halide perovskites are extensively investigated as efficient solution-processable materials for photovoltaic applications. The greatest stability and performance of these compounds are achieved by mixing different ions at all three sites of the APbX3 structure. Despite the extensive use of mixed lead halide perovskites in photovoltaic devices, a detailed and systematic understanding of the mixing-induced effects on the structural and dynamic aspects of these materials is still lacking. The goal of this review is to summarize the current state of knowledge on mixing effects on the structural phase transitions, crystal symmetry, cation and lattice dynamics, and phase diagrams of three- and low-dimensional lead halide perovskites. This review analyzes different mixing recipes and ingredients providing a comprehensive picture of mixing effects and their relation to the attractive properties of these materials.
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Affiliation(s)
- Mantas Simenas
- Faculty
of Physics, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
| | - Anna Gagor
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, PL-50-422 Wroclaw, Poland
| | - Juras Banys
- Faculty
of Physics, Vilnius University, Sauletekio 3, LT-10257 Vilnius, Lithuania
| | - Miroslaw Maczka
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, PL-50-422 Wroclaw, Poland
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3
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Athapaththu DV, Kordesch ME, Chen J. Monitoring Phase Separation and Dark Recovery in Mixed Halide Perovskite Clusters and Single Crystals Using In Situ Spectromicroscopy. J Phys Chem Lett 2024; 15:1105-1111. [PMID: 38262449 PMCID: PMC10877542 DOI: 10.1021/acs.jpclett.3c03280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Mixed halide perovskites (MHPs) are a group of semiconducting materials with promising applications in optoelectronics and photovoltaics, whose bandgap can be altered by adjusting the halide composition. However, the current challenge is to stabilize the light-induced halide separation, which undermines the device's performance. Herein we track down the phase separation dynamics of CsPbBr1.2I1.8 MHP single cubic nanocrystals (NCs) and clusters as a function of time by in situ fluorescence spectromicroscopy. The particles were sorted into groups 1 and 2 using initial photoluminescence intensities. The phase separation followed by recovery kinetics under dark and photo blinking analysis suggests that group 1 behaved more like single NCs and group 2 behaved like clusters. Under the 0.64 W/cm2 laser illumination, the phase shifts for single NCs are 3.4 ± 1.9 nm. The phase shifts are linearly correlated with the initial photoluminescence intensities of clusters, suggesting possible interparticle halide transportation.
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Affiliation(s)
- Deepani V. Athapaththu
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA
- Nanoscale & Quantum Phenomena Institute, Ohio University, Athens, OH 45701, USA
| | - Martin E. Kordesch
- Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA
- Nanoscale & Quantum Phenomena Institute, Ohio University, Athens, OH 45701, USA
| | - Jixin Chen
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA
- Nanoscale & Quantum Phenomena Institute, Ohio University, Athens, OH 45701, USA
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4
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Niu X, Li N, Cui Z, Li L, Pei F, Lan Y, Song Q, Du Y, Dou J, Bao Z, Wang L, Liu H, Li K, Zhang X, Huang Z, Wang L, Zhou W, Yuan G, Chen Y, Zhou H, Zhu C, Liu G, Bai Y, Chen Q. Anion Confinement for Homogeneous Mixed Halide Perovskite Film Growth by Electrospray. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305822. [PMID: 37565713 DOI: 10.1002/adma.202305822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/01/2023] [Indexed: 08/12/2023]
Abstract
Wide-bandgap perovskites are promising absorbers for state-of-the-art tandem solar cells to feasibly surpass Shockley-Queisser limit with low cost. However, the commonly used mixed halide perovskites suffer from poor stability; particularly, photoinduced phase segregation. Electrospray deposition is developed to bridge the gap of growth rate between iodide and bromide components during film growth by spatially confining the anion diffusion and eliminating the kinetic difference, which universally improves the initial homogeneity of perovskite films regardless of device architectures. It thus promotes the efficiency and stability of corresponding solar cells based on wide-bandgap (1.68 eV) absorbers. Remarkable power conversion efficiencies (PCEs) of 21.44% and 20.77% are achieved in 0.08 cm2 and 1.0 cm2 devices, respectively. In addition, these devices maintain 90% of their initial PCE after 1550 h of stabilized power output (SPO) tracking upon one sun irradiation (LED) at room temperature.
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Affiliation(s)
- Xiuxiu Niu
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Nengxu Li
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Zhenhua Cui
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Liang Li
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Fengtao Pei
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yisha Lan
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Qizhen Song
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yujiang Du
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Jing Dou
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Zhaoboxun Bao
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Lina Wang
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Huifen Liu
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Kailin Li
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Xinran Zhang
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Zijian Huang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Lan Wang
- School of Internet of Things Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Wentao Zhou
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Guizhou Yuan
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yihua Chen
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Huanping Zhou
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Cheng Zhu
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Guilin Liu
- School of Science, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Yang Bai
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Qi Chen
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
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5
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Guan X, Lei Z, Yu X, Lin CH, Huang JK, Huang CY, Hu L, Li F, Vinu A, Yi J, Wu T. Low-Dimensional Metal-Halide Perovskites as High-Performance Materials for Memory Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203311. [PMID: 35989093 DOI: 10.1002/smll.202203311] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Metal-halide perovskites have drawn profuse attention during the past decade, owing to their excellent electrical and optical properties, facile synthesis, efficient energy conversion, and so on. Meanwhile, the development of information storage technologies and digital communications has fueled the demand for novel semiconductor materials. Low-dimensional perovskites have offered a new force to propel the developments of the memory field due to the excellent physical and electrical properties associated with the reduced dimensionality. In this review, the mechanisms, properties, as well as stability and performance of low-dimensional perovskite memories, involving both molecular-level perovskites and structure-level nanostructures, are comprehensively reviewed. The property-performance correlation is discussed in-depth, aiming to present effective strategies for designing memory devices based on this new class of high-performance materials. Finally, the existing challenges and future opportunities are presented.
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Affiliation(s)
- Xinwei Guan
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Xuechao Yu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Science, 398 Ruoshui Road, Suzhou, 215123, China
| | - Chun-Ho Lin
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jing-Kai Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Chien-Yu Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Feng Li
- School of Physics, Nano Institute, ACMM, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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6
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Zheng R, Ueda J, Shinozaki K, Tanabe S. Reversible Phase Segregation and Amorphization of Mixed-Halide Perovskite Nanocrystals in Glass Matrices. J Phys Chem Lett 2022; 13:7809-7815. [PMID: 35975956 DOI: 10.1021/acs.jpclett.2c02261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mixed-halide perovskites have attracted great attention in applications of lighting and photovoltaic devices due to their excellent properties. Understanding the phase segregation mechanism of mixed-halide perovskite has significance for suppressing the performance degradation of optoelectronic devices. Herein, we investigate the mixed-halide perovskite nanocrystals (NCs) in isolation from the external factors (oxygen, moisture, and pressure) using glass encapsulation, which shows excellent photostability against phase segregation. By monitoring the structural evolution of the NCs in glass matrices, the coexisting phase segregation and amorphization of mixed-halide perovskites are observed in real-time. The results show that thermal-induced local temperature increase plays a dominant role in the phase segregation of mixed-halide perovskite NCs. The recovery process is driven by the spontaneous crystallization of the amorphous mixed-halide phase. The clarified dynamic equilibrium process between the compositional segregation (mixing) and structural disorder (order) gives us a better insight into the reversible phase segregation mechanism of mixed-halide perovskite.
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Affiliation(s)
- Ruilin Zheng
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Jumpei Ueda
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
- School of Material Science, Japan Advanced Institute of Science and Technology, Ishikawa 923-1292, Japan
| | - Kenji Shinozaki
- National Institute of Advanced Industrial Science and Technology, Osaka 563-8577, Japan
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - Setsuhisa Tanabe
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
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7
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Hu L, Duan L, Yao Y, Chen W, Zhou Z, Cazorla C, Lin C, Guan X, Geng X, Wang F, Wan T, Wu S, Cheong S, Tilley RD, Liu S, Yuan J, Chu D, Wu T, Huang S. Quantum Dot Passivation of Halide Perovskite Films with Reduced Defects, Suppressed Phase Segregation, and Enhanced Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102258. [PMID: 34845861 PMCID: PMC8805552 DOI: 10.1002/advs.202102258] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/18/2021] [Indexed: 05/04/2023]
Abstract
Structural defects are ubiquitous for polycrystalline perovskite films, compromising device performance and stability. Herein, a universal method is developed to overcome this issue by incorporating halide perovskite quantum dots (QDs) into perovskite polycrystalline films. CsPbBr3 QDs are deposited on four types of halide perovskite films (CsPbBr3 , CsPbIBr2 , CsPbBrI2 , and MAPbI3 ) and the interactions are triggered by annealing. The ions in the CsPbBr3 QDs are released into the thin films to passivate defects, and concurrently the hydrophobic ligands of QDs self-assemble on the film surfaces and grain boundaries to reduce the defect density and enhance the film stability. For all QD-treated films, PL emission intensity and carrier lifetime are significantly improved, and surface morphology and composition uniformity are also optimized. Furthermore, after the QD treatment, light-induced phase segregation and degradation in mixed-halide perovskite films are suppressed, and the efficiency of mixed-halide CsPbIBr2 solar cells is remarkably improved to over 11% from 8.7%. Overall, this work provides a general approach to achieving high-quality halide perovskite films with suppressed phase segregation, reduced defects, and enhanced stability for optoelectronic applications.
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Affiliation(s)
- Long Hu
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Leiping Duan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Yuchen Yao
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Weijian Chen
- School of Photovoltaic and Renewable Energy EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Zizhen Zhou
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Claudio Cazorla
- Departament de FísicaUniversitat Politècnica de CatalunyaCampus Nord B4‐B5BarcelonaE‐08034Spain
| | - Chun‐Ho Lin
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Xinwei Guan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Xun Geng
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Fei Wang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tao Wan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shuying Wu
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
| | - Soshan Cheong
- Electron Microscope UnitMark Wainwright Analytical CentreUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Richard D. Tilley
- Electron Microscope UnitMark Wainwright Analytical CentreUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shanqin Liu
- School of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyXinxiangHenan453003P. R. China
| | - Jianyu Yuan
- Institute of Functional Nano & Soft Materials (FUNSOM)Jiangsu Key Laboratory for Carbon‐Based Functional Materials and DevicesJoint International Research Laboratory of Carbon‐Based Functional Materials and DevicesSoochow University199 Ren‐Ai Road, Suzhou Industrial ParkSuzhouJiangsu215123P. R. China
| | - Dewei Chu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tom Wu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Shujuan Huang
- School of EngineeringMacquarie University Sustainable Energy Research CentreMacquarie UniversitySydneyNSW2109Australia
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Tao J, Wang Z, Wang H, Shen J, Liu X, Xue J, Guo H, Fu G, Kong W, Yang S. Additive Engineering for Efficient and Stable MAPbI 3-Perovskite Solar Cells with an Efficiency of over 21. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44451-44459. [PMID: 34506105 DOI: 10.1021/acsami.1c13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The high density of defects in MAPbI3 perovskite films brings about severe carrier nonradiative recombination loss, which lowers the performance of MAPbI3-based perovskite solar cells (PSCs). Here, methylamine cyanate (MAOCN) molecules were introduced into MAPbI3 solutions to manipulate the crystallizatsion of the MAPbI3 films. MAOCN molecules can slow down the volatilization rate of the solvent and delay the crystallization process of the MAPbI3 film. The crystal quality of the MAPbI3 films is effectively optimized without an additive residue. Perovskite films treated by MAOCN have lower defect density and longer carrier lifetime, which lowers the carrier recombination loss. Meanwhile, the MAPbI3 film based on MAOCN has a more hydrophobic surface. The final MAPbI3-based device efficiency reached 21.28% (VOC = 1.126 V, JSC = 23.29 mA/cm2, and FF = 81.13). After 30 days of storage under atmospheric conditions, the efficiency of unencapsulated MAOCN-based PSCs only dropped by about 5%.
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Affiliation(s)
- Junlei Tao
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
- State Key Laboratory of Photovoltaic Materials & Technology, Yingli Solar, Baoding 071051, China
| | - Zhiwen Wang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Hongwei Wang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Jinliang Shen
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Xiaoni Liu
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Jingwei Xue
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Hansong Guo
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Guangsheng Fu
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Weiguang Kong
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Shaopeng Yang
- Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Hebei University, Baoding 071002, China
- Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
- State Key Laboratory of Photovoltaic Materials & Technology, Yingli Solar, Baoding 071051, China
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9
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Chen W, Gan Z, Green MA, Jia B, Wen X. Revealing Dynamic Effects of Mobile Ions in Halide Perovskite Solar Cells Using Time-Resolved Microspectroscopy. SMALL METHODS 2021; 5:e2000731. [PMID: 34927806 DOI: 10.1002/smtd.202000731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/21/2020] [Indexed: 06/14/2023]
Abstract
Halide perovskites are promising candidate materials for the next generation high-efficiency optoelectronic devices. Since perovskites are electronic-ionic mixed conductors, ion dynamics have a critical impact on the performance and stability of perovskite-based applications. However, comprehensively understanding ionic dynamics is challenging, particularly on nanoscale imaging of ionic dynamics in perovskites. In this review, mobile ion dynamics in halide perovskites investigated via luminescence spectroscopy combined with confocal microscopy are discussed, including mobile ion induced fluorescence quenching, phase segregation in mixed halide hybrid perovskite, and mobile ion accumulation at the interface in perovskite devices. Steady-state and time-resolved luminescence imaging techniques, combined with confocal microscopy, are unique tools for probing ionic dynamics in perovskites, providing invaluable insights on ionic dynamics in nanoscale resolution, along with a wide temporal range from picoseconds to hours. The works in this review are not only for understanding mobile ions to improve the design of perovskite-based devices but also foster the development of microspectroscopic methodologies in a broader solid-state physics context of investigating ionic transports in polycrystalline materials.
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Affiliation(s)
- Weijian Chen
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Kensington, NSW, 2052, Australia
| | - Zhixing Gan
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing, 210023, P. R. China
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Martin A Green
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Kensington, NSW, 2052, Australia
| | - Baohua Jia
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Xiaoming Wen
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
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