Exploring Red, Green, and Blue Light-Activated Degradation of Perovskite Films and Solar Cells for Near Space Applications

Funding Agencies|National Science Foundation of ChinaNational Natural Science Foundation of China [11604099, 21875067, 51811530011, 51873138]; Fundamental Research Funds for the Central Universities, Shanghai Ring-Star [19QA1403100]; East China Normal University (ECNU) Multifunctional Platform for Innovation [003, 006]; ECNU future scientist project [WLKXJ2019]
Hybrid perovskite solar cells with a high specific power have great potential to become promising power sources mounted on spacecrafts in space applications. However, there is a lack of study on their photostability as light absorbers in those conditions. Herein, the stability of the perovskite films and solar cells under red, green, and blue (RGB) light illumination in medium vacuum that belongs to near space is explored. The perovskite active layers exhibit different degradations from morphological, chemical, and structural points of view. This is attributed to the strong coupling between photoexcited carriers and the crystal lattice and the diversity of RGB light absorption in the perovskite films. Device characterizations reveal that the efficiency loss of perovskite solar cells results from not only perovskite degradation, but also the photoexcited carriers reducing the energy barrier of ion migration and accelerating the migration to generate more deep-level trap defects. Moreover, comparative devices suggest that the well encapsulation can weaken the effect of vacuum on stability.

NATURVETENSKAP Kemi Annan kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Other Chemistry Topics hsv//eng
near space; perovskite solar cells; photoinduced degradation; red; green; and blue light; stabilities

Yang, JianmingEast China Normal Univ, Peoples R China (författare)
Xiong, ShaobingEast China Normal Univ, Peoples R China (författare)
Li, DanqinEast China Normal Univ, Peoples R China (författare)
Li, YanqingSoochow Univ, Peoples R China (författare)
Tang, JianxinSoochow Univ, Peoples R China (författare)
Duan, ChungangEast China Normal Univ, Peoples R China; Shanxi Univ, Peoples R China (författare)
Bao, QinyeLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,East China Normal Univ, Peoples R China; Shanxi Univ, Peoples R China(Swepub:liu)qinba41 (författare)
East China Normal Univ, Peoples R ChinaSoochow Univ, Peoples R China (creator_code:org_t)

Av författaren/redakt...: Xiao, Wei; Yang, Jianming; Xiong, Shaobing; Li, Danqin; Li, Yanqing; Tang, Jianxin; visa fler...; Duan, Chungang; Bao, Qinye; visa färre...

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