Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14%
Abstract All‐inorganic CsPbIBr2 perovskite solar cells (PSCs) have recently gained growing attention as a promising template to solve the thermal instability of organic–inorganic PSCs. However, the relatively low device efficiency hinders its further development. Herein, highly efficient and stable...
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| Format: | Article |
| Language: | English |
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Wiley
2022-04-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202106054 |
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| author | Weihai Zhang Heng Liu Xingnan Qi Yinye Yu Yecheng Zhou Yu Xia Jieshun Cui Yueqing Shi Rui Chen Hsing‐Lin Wang |
| author_facet | Weihai Zhang Heng Liu Xingnan Qi Yinye Yu Yecheng Zhou Yu Xia Jieshun Cui Yueqing Shi Rui Chen Hsing‐Lin Wang |
| author_sort | Weihai Zhang |
| collection | DOAJ |
| description | Abstract All‐inorganic CsPbIBr2 perovskite solar cells (PSCs) have recently gained growing attention as a promising template to solve the thermal instability of organic–inorganic PSCs. However, the relatively low device efficiency hinders its further development. Herein, highly efficient and stable CsPb0.7Sn0.3IBr2 compositional perovskite‐based inorganic PSCs are fabricated by introducing appropriate amount of multifunctional zinc oxalate (ZnOX). In addition to offset Pb and Sn vacancies through Zn2+ ions incorporation, the oxalate group can strongly interact with undercoordinated metal ions to regulate film crystallization, delivering perovskite film with low defect density, high crystallinity, and superior electronic properties. Correspondingly, the resulting device delivers a champion efficiency of 14.1%, which presents the highest reported efficiency for bromine‐rich inorganic PSCs thus far. More importantly, chemically reducing oxalate group can effectively suppress the notorious oxidation of Sn2+, leading to significant enhancement on air stability. |
| first_indexed | 2024-04-13T17:20:17Z |
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| id | doaj.art-4186ddd02f1f4b00aa27a309dc557c2f |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-13T17:20:17Z |
| publishDate | 2022-04-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj.art-4186ddd02f1f4b00aa27a309dc557c2f2022-12-22T02:38:00ZengWileyAdvanced Science2198-38442022-04-01911n/an/a10.1002/advs.202106054Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14%Weihai Zhang0Heng Liu1Xingnan Qi2Yinye Yu3Yecheng Zhou4Yu Xia5Jieshun Cui6Yueqing Shi7Rui Chen8Hsing‐Lin Wang9Department of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaSchool of Materials Science and Engineering Sun Yat‐sen University Guangzhou 510275 ChinaSchool of Materials Science and Engineering Sun Yat‐sen University Guangzhou 510275 ChinaDepartment of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Electrical and Electronic Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Electrical and Electronic Engineering South University of Science and Technology Shenzhen 518055 ChinaDepartment of Materials Science and Engineering South University of Science and Technology Shenzhen 518055 ChinaAbstract All‐inorganic CsPbIBr2 perovskite solar cells (PSCs) have recently gained growing attention as a promising template to solve the thermal instability of organic–inorganic PSCs. However, the relatively low device efficiency hinders its further development. Herein, highly efficient and stable CsPb0.7Sn0.3IBr2 compositional perovskite‐based inorganic PSCs are fabricated by introducing appropriate amount of multifunctional zinc oxalate (ZnOX). In addition to offset Pb and Sn vacancies through Zn2+ ions incorporation, the oxalate group can strongly interact with undercoordinated metal ions to regulate film crystallization, delivering perovskite film with low defect density, high crystallinity, and superior electronic properties. Correspondingly, the resulting device delivers a champion efficiency of 14.1%, which presents the highest reported efficiency for bromine‐rich inorganic PSCs thus far. More importantly, chemically reducing oxalate group can effectively suppress the notorious oxidation of Sn2+, leading to significant enhancement on air stability.https://doi.org/10.1002/advs.202106054all‐inorganic perovskitesbromine‐richlead‐reducedmitigative oxidationoxalate |
| spellingShingle | Weihai Zhang Heng Liu Xingnan Qi Yinye Yu Yecheng Zhou Yu Xia Jieshun Cui Yueqing Shi Rui Chen Hsing‐Lin Wang Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% Advanced Science all‐inorganic perovskites bromine‐rich lead‐reduced mitigative oxidation oxalate |
| title | Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% |
| title_full | Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% |
| title_fullStr | Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% |
| title_full_unstemmed | Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% |
| title_short | Oxalate Pushes Efficiency of CsPb0.7Sn0.3IBr2 Based All‐Inorganic Perovskite Solar Cells to over 14% |
| title_sort | oxalate pushes efficiency of cspb0 7sn0 3ibr2 based all inorganic perovskite solar cells to over 14 |
| topic | all‐inorganic perovskites bromine‐rich lead‐reduced mitigative oxidation oxalate |
| url | https://doi.org/10.1002/advs.202106054 |
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