Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors
All‐inorganic perovskite CsPbBr3 has drawn a lot of interest as an active layer applied in photovoltaics due to its outstanding stability in ambient air. However, the procedure of preparing high‐quality CsPbBr3 films still remains a serious challenge because of the tedious process and toxic solvent....
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-11-01
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| Series: | Advanced Energy & Sustainability Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aesr.202200115 |
| _version_ | 1797984544962379776 |
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| author | Kaiyuan Xu Long Zhou Xi Chen Siyu Zhang Xing Guo Chunhui Shou Zhenhua Lin Jincheng Zhang Jingjing Chang Yue Hao |
| author_facet | Kaiyuan Xu Long Zhou Xi Chen Siyu Zhang Xing Guo Chunhui Shou Zhenhua Lin Jincheng Zhang Jingjing Chang Yue Hao |
| author_sort | Kaiyuan Xu |
| collection | DOAJ |
| description | All‐inorganic perovskite CsPbBr3 has drawn a lot of interest as an active layer applied in photovoltaics due to its outstanding stability in ambient air. However, the procedure of preparing high‐quality CsPbBr3 films still remains a serious challenge because of the tedious process and toxic solvent. Herein, a solvent engineering method that involves green solvent with mixed H2O/C2H5OH to dissolve CsBr is presented to produce all‐inorganic perovskite CsPbBr3 films. CsPbBr3 perovskite solar cells (PSCs) are fabricated based on planar n‐i‐p structure. Compared with CsBr H2O solution, the CsPbBr3 films with optimized mixed solvent method exhibit larger grain size and improved crystallinity. As a result, the carbon‐electrode PSCs based on the mixed solvent method exhibit an increased efficiency of 9.70%. The best‐performing device retains 96.95% of the initial power conversion efficiency (PCE) after storing 1000 h under ambient air and 86.46% of the initial PCE after continuous illumination for 100 min. Moreover, the photodetector based on the same structure as the CsPbBr3 device shows high responsivity and high detectivity. The result not only provides an easy and straightforward method to prepare the uniform and pinhole‐free CsPbBr3 films, but also reduces the toxicity of the CsBr solution used to make the CsPbBr3 PSCs. |
| first_indexed | 2024-04-11T07:04:19Z |
| format | Article |
| id | doaj.art-51d3132b27fa40aa9208a702dbb8560f |
| institution | Directory Open Access Journal |
| issn | 2699-9412 |
| language | English |
| last_indexed | 2024-04-11T07:04:19Z |
| publishDate | 2022-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Energy & Sustainability Research |
| spelling | doaj.art-51d3132b27fa40aa9208a702dbb8560f2022-12-22T04:38:28ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122022-11-01311n/an/a10.1002/aesr.202200115Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and PhotodetectorsKaiyuan Xu0Long Zhou1Xi Chen2Siyu Zhang3Xing Guo4Chunhui Shou5Zhenhua Lin6Jincheng Zhang7Jingjing Chang8Yue Hao9State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaKey Laboratory of Solar Energy Utilization and Energy Saving Technology of Zhejiang Province Zhejiang Energy Group R&D Institute Co., Ltd. Hangzhou 311121 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of Graphene School of Microelectronics Xidian University 2 South Taibai Road Xi'an Shaanxi 710071 ChinaAll‐inorganic perovskite CsPbBr3 has drawn a lot of interest as an active layer applied in photovoltaics due to its outstanding stability in ambient air. However, the procedure of preparing high‐quality CsPbBr3 films still remains a serious challenge because of the tedious process and toxic solvent. Herein, a solvent engineering method that involves green solvent with mixed H2O/C2H5OH to dissolve CsBr is presented to produce all‐inorganic perovskite CsPbBr3 films. CsPbBr3 perovskite solar cells (PSCs) are fabricated based on planar n‐i‐p structure. Compared with CsBr H2O solution, the CsPbBr3 films with optimized mixed solvent method exhibit larger grain size and improved crystallinity. As a result, the carbon‐electrode PSCs based on the mixed solvent method exhibit an increased efficiency of 9.70%. The best‐performing device retains 96.95% of the initial power conversion efficiency (PCE) after storing 1000 h under ambient air and 86.46% of the initial PCE after continuous illumination for 100 min. Moreover, the photodetector based on the same structure as the CsPbBr3 device shows high responsivity and high detectivity. The result not only provides an easy and straightforward method to prepare the uniform and pinhole‐free CsPbBr3 films, but also reduces the toxicity of the CsBr solution used to make the CsPbBr3 PSCs.https://doi.org/10.1002/aesr.202200115all-inorganic perovskitesCsPbBr3green solventsphotodetectorssolar cellssolvent engineering |
| spellingShingle | Kaiyuan Xu Long Zhou Xi Chen Siyu Zhang Xing Guo Chunhui Shou Zhenhua Lin Jincheng Zhang Jingjing Chang Yue Hao Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors Advanced Energy & Sustainability Research all-inorganic perovskites CsPbBr3 green solvents photodetectors solar cells solvent engineering |
| title | Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors |
| title_full | Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors |
| title_fullStr | Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors |
| title_full_unstemmed | Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors |
| title_short | Solvent Engineering Approach Toward Optimized Phase and Morphology of CsPbBr3 Films for Efficient and Stable Planar Perovskite Solar Cells and Photodetectors |
| title_sort | solvent engineering approach toward optimized phase and morphology of cspbbr3 films for efficient and stable planar perovskite solar cells and photodetectors |
| topic | all-inorganic perovskites CsPbBr3 green solvents photodetectors solar cells solvent engineering |
| url | https://doi.org/10.1002/aesr.202200115 |
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