Статья

UV Degradation and Recovery of Perovskite Solar Cells

Sang‐Won LeeFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanySeongtak KimKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of KoreaSoohyun BaeKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of KoreaKyungjin ChoKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of KoreaTaewon ChungKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of KoreaLaura E. MundtFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanySeunghun LeeFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanySungeun ParkFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanyHyomin ParkKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of KoreaMartin C. SchubertFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanyStefan W. GlunzFraunhofer Institute for Solar Energy Systems ISE, Freiburg, 79110, GermanyYohan KoKonkuk University, Department of Materials Chemistry and Engineering, Seoul, 143-701, Republic of KoreaYongseok JunKonkuk University, Department of Materials Chemistry and Engineering, Seoul, 143-701, Republic of KoreaYoonmook KangKU·KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul, 136-713, Republic of KoreaHae‐Seok LeeKU·KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul, 136-713, Republic of KoreaDong‐Hwan KimKorea University, Department of Materials Science and Engineering, Seoul, 136-713, Republic of Korea

2016en

ABI

Аннотация

Abstract Although the power conversion efficiency of perovskite solar cells has increased from 3.81% to 22.1% in just 7 years, they still suffer from stability issues, as they degrade upon exposure to moisture, UV light, heat, and bias voltage. We herein examined the degradation of perovskite solar cells in the presence of UV light alone. The cells were exposed to 365 nm UV light for over 1,000 h under inert gas at <0.5 ppm humidity without encapsulation. 1-sun illumination after UV degradation resulted in recovery of the fill factor and power conversion efficiency. Furthermore, during exposure to consecutive UV light, the diminished short circuit current density (J sc ) and EQE continuously restored. 1-sun light soaking induced recovery is considered to be caused by resolving of stacked charges and defect state neutralization. The J sc and EQE bounce-back phenomenon is attributed to the beneficial effects of PbI 2 which is generated by the decomposition of perovskite material.

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Идентификаторы

DOI: 10.1038/srep38150

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar