Sparkling hot spots in perovskite solar cells under reverse bias
Perovskite solar cells (PSCs) are attracting much attention and are on the way to commercialization. However, some modules are subject to reverse bias in actual fields, so it is meaningful to investigate the reverse-bias behavior of PSCs. Herein, an in-situ temperature and current measurement techni...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2022-01-01
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| Series: | ChemPhysMater |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772571521000085 |
| _version_ | 1828265865239330816 |
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| author | Weiqi Li Keqing Huang Jianhui Chang Caiqi Hu Caoyu Long Hai Zhang Xavier Maldague Biao Liu Jianqiao Meng Yuxia Duan Junliang Yang |
| author_facet | Weiqi Li Keqing Huang Jianhui Chang Caiqi Hu Caoyu Long Hai Zhang Xavier Maldague Biao Liu Jianqiao Meng Yuxia Duan Junliang Yang |
| author_sort | Weiqi Li |
| collection | DOAJ |
| description | Perovskite solar cells (PSCs) are attracting much attention and are on the way to commercialization. However, some modules are subject to reverse bias in actual fields, so it is meaningful to investigate the reverse-bias behavior of PSCs. Herein, an in-situ temperature and current measurement technique was developed. Intriguingly, some hot spots were observed and then quickly disappeared in the reverse biased PSCs, along with the simultaneous increase in the current and local temperature. Also, the potential mechanism has been revealed and analyzed. An abnormal bulge in the perovskite film was found at the hot spot. Accordingly, the appearance and disappearance of hot spots were perfectly explained by band bending and tunneling current caused by ion accumulation. Additionally, statistical analysis suggested that sparkling hot spots were related to reverse voltage and efficiencies of PSCs. The research provides a great significance for the study of PSCs under reverse bias. |
| first_indexed | 2024-04-13T04:44:55Z |
| format | Article |
| id | doaj.art-3a0127f9475a482ba27a4c5cdf22ddd2 |
| institution | Directory Open Access Journal |
| issn | 2772-5715 |
| language | English |
| last_indexed | 2024-04-13T04:44:55Z |
| publishDate | 2022-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | ChemPhysMater |
| spelling | doaj.art-3a0127f9475a482ba27a4c5cdf22ddd22022-12-22T03:01:52ZengKeAi Communications Co., Ltd.ChemPhysMater2772-57152022-01-01117176Sparkling hot spots in perovskite solar cells under reverse biasWeiqi Li0Keqing Huang1Jianhui Chang2Caiqi Hu3Caoyu Long4Hai Zhang5Xavier Maldague6Biao Liu7Jianqiao Meng8Yuxia Duan9Junliang Yang10School of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaComputer Vision and Systems Laboratory, Department of Electrical and Computer Engineering, Université Laval, 1065, av. de la Médecine, Québec (QC), Canada G1V 0A6Computer Vision and Systems Laboratory, Department of Electrical and Computer Engineering, Université Laval, 1065, av. de la Médecine, Québec (QC), Canada G1V 0A6School of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Central South University, Changsha 410083, China; Corresponding authors.School of Physics and Electronics, Central South University, Changsha 410083, China; Corresponding authors.Perovskite solar cells (PSCs) are attracting much attention and are on the way to commercialization. However, some modules are subject to reverse bias in actual fields, so it is meaningful to investigate the reverse-bias behavior of PSCs. Herein, an in-situ temperature and current measurement technique was developed. Intriguingly, some hot spots were observed and then quickly disappeared in the reverse biased PSCs, along with the simultaneous increase in the current and local temperature. Also, the potential mechanism has been revealed and analyzed. An abnormal bulge in the perovskite film was found at the hot spot. Accordingly, the appearance and disappearance of hot spots were perfectly explained by band bending and tunneling current caused by ion accumulation. Additionally, statistical analysis suggested that sparkling hot spots were related to reverse voltage and efficiencies of PSCs. The research provides a great significance for the study of PSCs under reverse bias.http://www.sciencedirect.com/science/article/pii/S2772571521000085Perovskite solar cellsReverse biasHot spotsStability |
| spellingShingle | Weiqi Li Keqing Huang Jianhui Chang Caiqi Hu Caoyu Long Hai Zhang Xavier Maldague Biao Liu Jianqiao Meng Yuxia Duan Junliang Yang Sparkling hot spots in perovskite solar cells under reverse bias ChemPhysMater Perovskite solar cells Reverse bias Hot spots Stability |
| title | Sparkling hot spots in perovskite solar cells under reverse bias |
| title_full | Sparkling hot spots in perovskite solar cells under reverse bias |
| title_fullStr | Sparkling hot spots in perovskite solar cells under reverse bias |
| title_full_unstemmed | Sparkling hot spots in perovskite solar cells under reverse bias |
| title_short | Sparkling hot spots in perovskite solar cells under reverse bias |
| title_sort | sparkling hot spots in perovskite solar cells under reverse bias |
| topic | Perovskite solar cells Reverse bias Hot spots Stability |
| url | http://www.sciencedirect.com/science/article/pii/S2772571521000085 |
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