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Mesoporous TiO2 layer suppresses ion accumulation in perovskite solar cells
Shaoshuai Miao1, Shuai Yuan1, Dongping Zhu1
1Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China. ywang@ruc.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|August 24, 2022
Abstract:
Ion accumulation in perovskite solar cells can be highly suppressed by a mesoporous TiO2 layer. This is evidenced by the decrease of the ion-related electrostatic potential with increasing the thickness of the mesoporous layer, accounted for by the electron population in the shallow trap states of the TiO2 nanocrystals.

