材料科学
二硒醚
能量转换效率
钙钛矿(结构)
焊接
图层(电子)
光电子学
灵活性(工程)
活动层
弯曲
复合材料
化学工程
冶金
工程类
硒
统计
薄膜晶体管
数学
作者
Xiongjie Li,Bin Ding,Junyi Huang,Zhiguo Zhang,Hongliang Dong,Haixuan Yu,Zhirong Liu,Letian Dai,Yan Shen,Yong Ding,Paul J. Dyson,Mohammad Khaja Nazeeruddin,Mingkui Wang
标识
DOI:10.1002/adma.202410338
摘要
Flexible perovskite solar cells (F-PSCs) are highly promising for both stationary and mobile applications because of their advantageous features, including mechanical flexibility, their lightweight and thin nature, and cost-effectiveness. However, a number of drawbacks, such as mechanical instability, make their practical application difficult. Here, self-welding dynamic diselenide that is triggered by visible light into the structure of F-PSCs to improve their long-term stability by repairing cracks and defects in the absorber layer is incorporated. The diselenide confers the flexibility and self-welding properties to the Cs0.05MA0.05FA0.9PbI3 perovskite layer, enabling optimized F-PSC devices to achieve a power conversion efficiency of 24.85% while retaining ca. 92% of their initial efficiency after undergoing 15 000 bending cycles at a curvature radius of 3 mm. The corresponding flexible large-scale module with an active area of 15.82 cm2 achieved a record PCE of 21.65%.
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