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

doi:10.1039/c6ta10444d

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

Institute of Chemistry

Research output: Contribution to journal › Article › peer-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 language	American English
Pages (from-to)	4803-4808
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	5
Issue number	10
DOIs	https://doi.org/10.1039/c6ta10444d
State	Published - 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.

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10.1039/c6ta10444d

Cite this

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

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.",

author = "Yue Chang and Li Wang and Jiliang Zhang and Zhongmin Zhou and Chongwen Li and Bingbing Chen and Lioz Etgar and Guanglei Cui and Shuping Pang",

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: {\textcopyright} The Royal Society of Chemistry.",

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T1 - CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability

AU - Chang, Yue

AU - Wang, Li

AU - Zhang, Jiliang

AU - Zhou, Zhongmin

AU - Li, Chongwen

AU - Chen, Bingbing

AU - Etgar, Lioz

AU - Cui, Guanglei

AU - Pang, Shuping

N1 - 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.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

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U2 - 10.1039/c6ta10444d

DO - 10.1039/c6ta10444d

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