| Autor: |
Junyan Xiao, Fei Long, Fuzhi Huang, Zhiliang Ku, Yong Peng, Xinxin Yu, Jie Zhong, Wei Li, Yueyue Xiao, Tianxing Xiang, Yi-Bing Cheng, Shengquan Fu |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
RSC Advances. 11:17595-17602 |
| ISSN: |
2046-2069 |
| DOI: |
10.1039/d1ra02666f |
| Popis: |
The preparation of CsyFA1−yPbIxBr3−x-based perovskite by ultrasonic spraying has valuable application in the preparation of tandem solar cells on textured substrates due to its excellent stability and the advantages of large-area uniform preparation from the spraying technology. However, the bandgap of perovskite prepared by spraying method is difficult to adjust, and perovskites with a wide bandgap have the issue of phase instability. Here, we improved the crystallinity of the perovskite by simply controlling the post-annealing temperature. The results show that perovskite film prepared by hybrid spray method has the best crystallinity and device performance at a post-annealing temperature of 170 °C. On this basis, the bandgap of perovskite was changed from 1.53 eV to 1.76 eV by controlling the ratio of the organic halogen precursor solution. When the bandgap is 1.57 eV, a perovskite solar cell with an efficiency of 18.31% is obtained. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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