Efficient perovskite solar cells with various bandgaps
Jingbi You a
a Institute of Semiconductors, Chinese Academy of Sciences, China
nanoGe Perovskite Conferences
Proceedings of International online conference on Hybrid materials and optoelectronic devices (HYBRIDOE)
Online, Spain, 2020 December 15th - 17th
Organizers: Xueqing Xu, Baomin Xu, Hin-Lap (Angus) Yip and Xinhua Zhong
Invited Speaker, Jingbi You, presentation 028
DOI: https://doi.org/10.29363/nanoge.hybridoe.2020.028
Publication date: 4th December 2020

Lead halide perovskite is a new type of semiconductor optoelectronic material, which owns large absorption coefficient, long diffusion length, which make it as an excellent photovoltaic material. Perovskite solar cells with different bandgaps of absorber need to be studied for making efficient single or tandem solar cells. In this talk, we will show: 1) By contact engineering, for the bandgap around 1.5 eV, we have achieved close to 25% efficiency, 2) By the composition engineering, we have pushed the PCE of inorganic perovskite CsPbI3 based solar cells to 20% efficiency, 3) According to the defect engineering, over 20% efficiency of the perovskite solar cells have been demonstrated for the perovskite bandgap around 1.35 eV.

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