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| DOI | 10.1016/j.scib.2020.09.017 |
| CsPbBrI2 perovskites with low energy loss for high-performance indoor and outdoor photovoltaics | |
| Wang K.-L.; Li X.-M.; Lou Y.-H.; Li M.; Wang Z.-K. | |
| 发表日期 | 2021 |
| ISSN | 20959273 |
| 起始页码 | 347 |
| 结束页码 | 353 |
| 卷号 | 66期号:4 |
| 英文摘要 | Over the years, the efficiency of inorganic perovskite solar cells (PSCs) has increased at an unprecedented pace. However, energy loss in the device has limited a further increase in efficiency and commercialization. In this work, we used (NH4)2C2O4·H2O to treat CsPbBrI2 perovskite film during spin-coating. The CsPbBrI2 underwent secondary crystallization to form high quality films with micrometer-scale and low trap density. (NH4)2C2O4·H2O treatment promoted charge transfer capacity and reduced the ideal factor. It also dropped the energy loss from 0.80 to 0.64 eV. The resulting device delivered a power conversion efficiency (PCE) of 16.55% with an open-circuit voltage (Voc) of 1.24 V, which are largely improved compared with the reference device which exhibited a PCE of 13.27% and a Voc of 1.10 V. In addition, the optimized treated device presented a record indoor PCE of 28.48% under a fluorescent lamp of 1000 lux, better than that of the reference device (19.05%). © 2020 Science China Press |
| 关键词 | Carrier dynamicsEnergy lossGrain sizeIndoor lightPerovskite solar cells |
| 英文关键词 | Bromine compounds; Charge transfer; Conversion efficiency; Energy dissipation; Lead compounds; Open circuit voltage; Perovskite; Perovskite solar cells; High-quality films; Micrometer scale; Perovskite films; Photovoltaics; Power conversion efficiencies; Reference devices; Secondary crystallization; Transfer capacities; Iodine compounds |
| 语种 | 英语 |
| 来源期刊 | Science Bulletin
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/207591 |
| 作者单位 | Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China; College of Physics, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou, 215006, China |
| 推荐引用方式 GB/T 7714 | Wang K.-L.,Li X.-M.,Lou Y.-H.,et al. CsPbBrI2 perovskites with low energy loss for high-performance indoor and outdoor photovoltaics[J],2021,66(4). |
| APA | Wang K.-L.,Li X.-M.,Lou Y.-H.,Li M.,&Wang Z.-K..(2021).CsPbBrI2 perovskites with low energy loss for high-performance indoor and outdoor photovoltaics.Science Bulletin,66(4). |
| MLA | Wang K.-L.,et al."CsPbBrI2 perovskites with low energy loss for high-performance indoor and outdoor photovoltaics".Science Bulletin 66.4(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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