UV Degradation and Recovery of Perovskite Solar Cells
作者： Sang-Won Lee , Seongtak Kim , Soohyun Bae , Kyungjin Cho , Taewon Chung
DOI: 10.1038/SREP38150
关键词: Biasing 、 Hybrid solar cell 、 UV degradation 、 Short circuit 、 Energy conversion efficiency 、 Materials science 、 Polymer solar cell 、 Inert gas 、 Photochemistry 、 Humidity
摘要: Although the power conversion efficiency of perovskite solar cells has increased from 3.81% to 22.1% in just 7 years, they still suffer stability issues, as degrade upon exposure moisture, UV light, heat, and bias voltage. We herein examined degradation presence light alone. The were exposed 365 nm for over 1,000 h under inert gas at <0.5 ppm humidity without encapsulation. 1-sun illumination after resulted recovery fill factor efficiency. Furthermore, during consecutive diminished short circuit current density (Jsc) EQE continuously restored. soaking induced is considered be caused by resolving stacked charges defect state neutralization. Jsc bounce-back phenomenon attributed beneficial effects PbI2 which generated decomposition material.
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