CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability

Yue Chang, Li Wang, Jiliang Zhang, Zhongmin Zhou, Chongwen Li, Bingbing Chen, Lioz Etgar, Guanglei Cui*, Shuping Pang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We report here the discovery of a fancy interaction between cesium iodide (CsI) and methylamine (CH3NH2) due to the presence of the hydrogen bond. The formed CsI·xCH3NH2 is a liquid phase, which facilitates the large scale fabrication of highly uniform cesium-containing perovskite films with strong (110) preferred orientation by the CH3NH2 gas healing process. With this method, at most 10% nonpolar Cs cations could fully dope into the crystal lattice and extremely enhance the interaction of the inorganic framework with a more symmetrical PbI6 octahedron, resulting in obvious improvement in moisture stability under continuous illumination.

Original languageAmerican English
Pages (from-to)4803-4808
Number of pages6
JournalJournal of Materials Chemistry A
Volume5
Issue number10
DOIs
StatePublished - 2017

Bibliographical note

Funding Information:
This work was financially supported by the International S&T Cooperation Program of China (2015DFG62670), the National Natural Science Foundation (51672290, 21671196, and 61604156), the Youth Innovation Promotion Association of CAS (2015167), and the Qingdao Key Lab of solar energy utilization and energy storage technology.

Publisher Copyright:
© The Royal Society of Chemistry.

Fingerprint

Dive into the research topics of 'CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability'. Together they form a unique fingerprint.

Cite this