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Ferroic alternation in methylammonium lead triiodide perovskite

Authors :
Shengjian Qin
Shenghui Yi
Yanqing Xu
Zhou Mi
Jinjin Zhao
Xiaobao Tian
Huajun Guo
Yinan Jiao
Guanglei Zhang
Jian Lu
Source :
EcoMat, Vol 3, Iss 5, Pp n/a-n/a (2021)
Publication Year :
2021
Publisher :
Wiley, 2021.

Abstract

Abstract Methylammonium lead triiodide (MAPbI3) perovskite has attracted broad interest for solar cells, light‐emitting diodes, and so forth. Experiments have captured that the alternative coexistence of polar and nonpolar domains in MAPbI3 can be switched by photons and phonons. Therefore, it is urgent to clarify the interplay among the crystal space group, polarity, ferroic properties, and switching mechanisms for MAPbI3. Herein, we perform a statistical synthesis on ferroelectric and anti‐ferroelectric features for tetragonal MAPbI3 perovskite. The polar and nonpolar domains are ferroelectric with the I4cm space group and anti‐ferroelectric with the I4/mcm space group, respectively. The domain wall (DW) separating nonpolar and polar regions is charged. Combining the effects of the electric properties of ferroic domains and the charged DWs, novel switching mechanisms are proposed in which photons and phonons drive alternations between ferroelectric and anti‐ferroelectric domains, which provide a reasonable approach to clarify the ambiguous understanding of ferroic behavior for MAPbI3 perovskite.

Details

Language :
English
ISSN :
25673173
Volume :
3
Issue :
5
Database :
Directory of Open Access Journals
Journal :
EcoMat
Publication Type :
Academic Journal
Accession number :
edsdoj.72b33be35db546b589e0795d6a3f393f
Document Type :
article
Full Text :
https://doi.org/10.1002/eom2.12131