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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yue Chang
  • Li Wang
  • Jiliang Zhang
  • Zhongmin Zhou
  • Chongwen Li
  • And 4 others
  • Bingbing Chen
  • Lioz Etgar
  • Guanglei Cui
  • Shuping Pang

Detail(s)

Original languageEnglish
Pages (from-to)4803-4808
Journal / PublicationJournal of Materials Chemistry A
Volume5
Issue number10
Publication statusPublished - 2017

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.

Citation Format(s)

CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability. / Chang, Yue; Wang, Li; Zhang, Jiliang; Zhou, Zhongmin; Li, Chongwen; Chen, Bingbing; Etgar, Lioz; Cui, Guanglei; Pang, Shuping.

In: Journal of Materials Chemistry A, Vol. 5, No. 10, 2017, p. 4803-4808.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review