globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.09.017
论文题名:
CsPbBrI2 perovskites with low energy loss for high-performance indoor and outdoor photovoltaics
作者: Wang K.-L.; Li X.-M.; Lou Y.-H.; Li M.; Wang Z.-K.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:4
起始页码: 347
结束页码: 353
语种: 英语
中文关键词: Carrier dynamics ; Energy loss ; Grain size ; Indoor light ; Perovskite 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170425
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Science Bulletin,2021-01-01,66(4)
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