Mesoporous TiO2 layer suppresses ion accumulation in perovskite solar cells

Shaoshuai Miao; Shuai Yuan; Dongping Zhu; Qingbin Cai; Hao-Yi Wang; Yi Wang; Yujun Qin; Xi-Cheng Ai

doi:10.1039/D2CP02037H

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Mesoporous TiO₂ layer suppresses ion accumulation in perovskite solar cells†

Shaoshuai Miao,^a Shuai Yuan,

^a Dongping Zhu,

^a Qingbin Cai,^a Hao-Yi Wang,^a Yi Wang,

*^a Yujun Qin

*^a and Xi-Cheng Ai

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
E-mail: ywang@ruc.edu.cn, yjqin@ruc.edu.cn, xcai@ruc.edu.cn

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.

This article is part of the themed collection: 2022 PCCP HOT Articles

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Article information

DOI: https://doi.org/10.1039/D2CP02037H
Article type: Communication
Submitted: 05 May 2022
Accepted: 16 Aug 2022
First published: 17 Aug 2022

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Phys. Chem. Chem. Phys., 2022,24, 20689-20693

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Mesoporous TiO₂ layer suppresses ion accumulation in perovskite solar cells

S. Miao, S. Yuan, D. Zhu, Q. Cai, H. Wang, Y. Wang, Y. Qin and X. Ai, Phys. Chem. Chem. Phys., 2022, 24, 20689 DOI: 10.1039/D2CP02037H

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