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Yuan L, Zou S, Zhang K, Huang P, Dong Y, Wang J, Fan K, Lam MY, Wu X, Cheng W, Tang R, Chen W, Liu W, Wong KS, Yan K. Bottom Contact Engineering for Ambient Fabrication of >25% Durable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2409261. [PMID: 39092687 DOI: 10.1002/adma.202409261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Indexed: 08/04/2024]
Abstract
The bottom contact in perovskite solar cells (PSCs) is easy to cause deep trap states and severe instability issues, especially under maximum power point tracking (MPPT). In this study, sodium gluconate (SG) is employed to disperse tin oxide (SnO2) nanoparticles (NPs) and regulate the interface contact at the buried interface. The SG-SnO2 electron transfer layer (ETL) enabled the deposition of pinhole-free perovskite films in ambient air and improved interface contact by bridging effect. SG-SnO2 PSCs achieved an impressive power conversion efficiency (PCE) of 25.34% (certified as 25.17%) with a high open-circuit voltage (VOC) exceeding 1.19 V. The VOC loss is less than 0.34 V relative to the 1.53 eV bandgap, and the fill factor (FF) loss is only 2.02% due to the improved contact. The SG-SnO2 PSCs retained around 90% of their initial PCEs after 1000 h operation (T90 = 1000 h), higher than T80 = 1000 h for the control SnO2 PSC. Microstructure analysis revealed that light-induced degradation primarily occurred at the buried holes and grain boundaries and highlighted the importance of bottom-contact engineering.
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Affiliation(s)
- Ligang Yuan
- Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province, Key Laboratory of Nondestructive Testing Ministry of Education, School of the Testing and Photoelectric Engineering, Nanchang Hangkong University, Nanchang, 330063, China
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Shibing Zou
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Kaicheng Zhang
- Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University Erlangen-Nüremberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Peng Huang
- Research Institute of Frontier Science, Southwest Jiaotong University, Chengdu, 610031, China
| | - Yuyan Dong
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Jiarong Wang
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Kezhou Fan
- Department of Physics and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clearwater Bay, Hong Kong, 999077, P. R. China
| | - Man Yu Lam
- Department of Physics and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clearwater Bay, Hong Kong, 999077, P. R. China
| | - Xiao Wu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, 999077, P. R. China
| | - Wei Cheng
- Research Institute of Frontier Science, Southwest Jiaotong University, Chengdu, 610031, China
| | - Ruijia Tang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wenhao Chen
- Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province, Key Laboratory of Nondestructive Testing Ministry of Education, School of the Testing and Photoelectric Engineering, Nanchang Hangkong University, Nanchang, 330063, China
| | - Weiqing Liu
- Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province, Key Laboratory of Nondestructive Testing Ministry of Education, School of the Testing and Photoelectric Engineering, Nanchang Hangkong University, Nanchang, 330063, China
| | - Kam Sing Wong
- Department of Physics and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clearwater Bay, Hong Kong, 999077, P. R. China
| | - Keyou Yan
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
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Yuan L, Wang J, Huang P, Yin Q, Zou S, Wang L, Zhang Z, Luo H, Liu F, Qiu J, Xie J, Ding L, Yan K. Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution. SMALL METHODS 2023; 7:e2201467. [PMID: 36631288 DOI: 10.1002/smtd.202201467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Post-treatment is an essential passivation step for the state-of-the-art perovskite solar cells (PSCs) but the additional role is not yet exploited. In this work, perovskite film is fabricated under ambient air with wide humidity window and identify that chloride redistribution induced by post-treatment plays an important role in high performance. The chlorine/iodine ratio on the perovskite surface increases from 0.037 to 0.439 after cyclohexylmethylammonium iodide (CHMAI) treatment and the PSCs deliver a champion power conversion efficiency (PCE) of 24.42% (certificated 23.60%). The maximum external quantum efficiency of electroluminescence (EQEEL ) reaches to 10.84% with a radiance of 170 W sr-1 m-2 , forming the reciprocity relation between EQEEL and nonradiative open-circuit voltage loss (86.0 mV). After thermal annealing, 2D component of perovskite will increase while chloride decline, leading to improved photovoltage but reduced fill factor. Hence, it distinguishes that chloride enrichment can improve charge transport/recombination simultaneously and 2D passivation can suppress the nonradiative recombination. Moreover, CHMAI can leverage their roles in charge transport/recombination for better performance than phenylethylammonium iodide (Cl/I = 0.114, PCE = 23.32%), due to the stronger binding energy of Cl- . This work provides the insight that the chloride fixation can improve the photovoltaic performance.
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Affiliation(s)
- Ligang Yuan
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
| | - Jiarong Wang
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
| | - Peng Huang
- Research Institute of Frontier Science, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Qixin Yin
- School of Materials, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Shibing Zou
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
| | - Lipeng Wang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Zheng Zhang
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
| | - Huiming Luo
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Jianhang Qiu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Jiangsheng Xie
- School of Materials, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Liming Ding
- Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Keyou Yan
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, P. R. China
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Li C, Liu X, Tu D, Yang Q, Chen X, Li C, Guo X. A polymeric ionic liquid as a cathode interlayer of organic photovoltaics with improved reproducibility. Chem Commun (Camb) 2019; 55:2956-2959. [PMID: 30778444 DOI: 10.1039/c8cc10222h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polymeric ionic liquid (PIL) was synthesized from a small-molecule one (MIL, the monomer), and they were used as cathode interlayers in organic solar cells. Compared with the MIL, the PIL can form a more uniform film for full coverage of an active layer and efficient cathode modification, resulting in higher device efficiency and reproducibility.
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Affiliation(s)
- Chunhua Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian 116023, China.
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