In-situ compensation for thermal strain by phase transformation strain in all-inorganic perovskite solar cells

Lei Gao,Yuanyuan Zhao,Yijie Chang,Kuidong Gao,Qiurui Wang,Qiang Zhang,Qunwei Tang

Chemical Engineering Journal（2023）

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摘要

•Residual strain is released via in-situ compensation by phase transformation strain.•The addition of DMSO optimizes PbBr2 crystallization kinetics and film morphology.•CsPbBr3 film quality is improved with 2.91 μm-grain size and reduced defect density.•The unsealed device achieves a best PCE of 10.11% and high moisture-heat stability.

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关键词

Inorganic perovskite solar cells,Charge recombination,Strain relaxation,Defect passivation,Crystal growth

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