Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films

Qingyi Huang; Zhe Li; Xiayan Chen; Yongkang Xia; Ziwei Zheng; Anyi Mei; Kai Zhu; Yue Hu; Ti Wang; Yaoguang Rong; Hongwei Han

doi:10.1039/D1CC01543E

Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films†

Qingyi Huang,‡^a Zhe Li,‡^b Xiayan Chen,^a Yongkang Xia,^a Ziwei Zheng,^a Anyi Mei,^a Kai Zhu,^c Yue Hu,

^a Ti Wang,^b Yaoguang Rong

*^a and Hongwei Han

^a

Author affiliations

* Corresponding authors

^a Wuhan National Laboratory for Optoelectronics, China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
E-mail: ygrong@hust.edu.cn

^b School of Physics and Technology and Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, Wuhan University, Wuhan 430072, China

^c School of Information Science and Engineering, Nanjing University Jinling College, No. 8 Xuefu Road, Nanjing 210089, Jiangsu, P. R. China

Abstract

The anion exchange between MAPbX₃ (X = I⁻ or Br⁻) and MAX salts in a solution environment is investigated. We find that I⁻ can enter MAPbBr₃ single crystals (SC) in millimeter scale, while Br⁻ can only penetrate the surface of MAPbI₃ SC in a micrometer scale. Due to the lattice variation, the reaction is partially reversible.

Chemical Communications

Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films

Social activity

Search articles by author

Spotlight

Advertisements