Investigating the iodide and bromide ion exchange in metal halide perovskite single crystals and thin films. Issue 50 (1st June 2021)

• Record Type: Journal Article
• Authors: Huang, Qingyi; Li, Zhe; Chen, Xiayan; Xia, Yongkang; Zheng, Ziwei; Mei, Anyi; Zhu, Kai; Hu, Yue; Wang, Ti; Rong, Yaoguang; Han, Hongwei
• Is Part Of: Chemical communications. Volume 57:Issue 50(2021)
• Page Start: 6125
• Page End: 6128
• Publication Date: 2021-06-01
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc01543e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Anion exchange can occur between MAPbX3 (X = I − or Br − ) and MAX salts in a solution environment. Due to the lattice variation, I − and Br − show different intrusion behaviors, making the reaction partially reversible. 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.