Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells
Lewis base additives typically undergo interactions with SnI2 to achieve effective defect passivation in lead-free perovskite films. In this work, the thiophene ring in 2-thiophenethylammonium chloride (TEACl) has coordination interactions with Sn2+ and the -NH3+ therein forms hydrogen bonds with I-...
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Elsevier
2025-01-01
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| Series: | Next Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S294982282400323X |
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| author | Miao Zhang Peng Wang Huanhuan Yao Cheng Wu Mingyu Yin Hongju Qiu Jie Luo Jialin Du Yong Hua Feng Hao |
| author_facet | Miao Zhang Peng Wang Huanhuan Yao Cheng Wu Mingyu Yin Hongju Qiu Jie Luo Jialin Du Yong Hua Feng Hao |
| author_sort | Miao Zhang |
| collection | DOAJ |
| description | Lewis base additives typically undergo interactions with SnI2 to achieve effective defect passivation in lead-free perovskite films. In this work, the thiophene ring in 2-thiophenethylammonium chloride (TEACl) has coordination interactions with Sn2+ and the -NH3+ therein forms hydrogen bonds with I-. This facilitates the deposition of homogeneous and dense films with fewer defects during crystallization process. Otherwise, 2-pyridinethylammonium chloride (AEPCl) gives poorly perovskite films with high defect density because of the overly strong interaction with SnI2. As a result, the average photoluminescence life time of TEACl-passivated perovskite film was substantially increased to 22.04 ns, compared with the control film (5.15 ns) and the AEPCl-passivated film (3.55 ns). Ultimately, the target solar cell with TEACl passivation presented a power conversion efficiency of 13.24% and excellent shelf-stand stability with a 90% retaining of initial efficiency after 2000 h of aging in N2 atmosphere. This work sheds new light on the structural tailoring of Lewis base passivators for efficient defect passivation in lead-free tin halide perovskites. |
| format | Article |
| id | doaj-art-0c673bd75bab4bbab33a15c38aa6b5d7 |
| institution | DOAJ |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Materials |
| spelling | doaj-art-0c673bd75bab4bbab33a15c38aa6b5d72025-08-20T03:02:07ZengElsevierNext Materials2949-82282025-01-01610042510.1016/j.nxmate.2024.100425Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cellsMiao Zhang0Peng Wang1Huanhuan Yao2Cheng Wu3Mingyu Yin4Hongju Qiu5Jie Luo6Jialin Du7Yong Hua8Feng Hao9School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaYunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, Yunnan University, Kunming 650091, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaYunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, Yunnan University, Kunming 650091, China; Corresponding authors.School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Corresponding authors.Lewis base additives typically undergo interactions with SnI2 to achieve effective defect passivation in lead-free perovskite films. In this work, the thiophene ring in 2-thiophenethylammonium chloride (TEACl) has coordination interactions with Sn2+ and the -NH3+ therein forms hydrogen bonds with I-. This facilitates the deposition of homogeneous and dense films with fewer defects during crystallization process. Otherwise, 2-pyridinethylammonium chloride (AEPCl) gives poorly perovskite films with high defect density because of the overly strong interaction with SnI2. As a result, the average photoluminescence life time of TEACl-passivated perovskite film was substantially increased to 22.04 ns, compared with the control film (5.15 ns) and the AEPCl-passivated film (3.55 ns). Ultimately, the target solar cell with TEACl passivation presented a power conversion efficiency of 13.24% and excellent shelf-stand stability with a 90% retaining of initial efficiency after 2000 h of aging in N2 atmosphere. This work sheds new light on the structural tailoring of Lewis base passivators for efficient defect passivation in lead-free tin halide perovskites.http://www.sciencedirect.com/science/article/pii/S294982282400323XThiophenePyridineInteractionsCrystallizationLewis base |
| spellingShingle | Miao Zhang Peng Wang Huanhuan Yao Cheng Wu Mingyu Yin Hongju Qiu Jie Luo Jialin Du Yong Hua Feng Hao Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells Next Materials Thiophene Pyridine Interactions Crystallization Lewis base |
| title | Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| title_full | Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| title_fullStr | Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| title_full_unstemmed | Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| title_short | Ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| title_sort | ultralong photoluminescence lifetime enables efficient tin halide perovskite solar cells |
| topic | Thiophene Pyridine Interactions Crystallization Lewis base |
| url | http://www.sciencedirect.com/science/article/pii/S294982282400323X |
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