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Materials 2016, 9(3), 123; doi:10.3390/ma9030123

Crystal Structure Formation of CH3NH3PbI3-xClx Perovskite

School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
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Author to whom correspondence should be addressed.
Academic Editor: Joshua M. Pearce
Received: 11 December 2015 / Revised: 8 February 2016 / Accepted: 16 February 2016 / Published: 24 February 2016
(This article belongs to the Special Issue Photovoltaic Materials and Electronic Devices)
View Full-Text   |   Download PDF [2867 KB, uploaded 24 February 2016]   |  

Abstract

Inorganic-organic hydride perovskites bring the hope for fabricating low-cost and large-scale solar cells. At the beginning of the research, two open questions were raised: the hysteresis effect and the role of chloride. The presence of chloride significantly improves the crystallization and charge transfer property of the perovskite. However, though the long held debate over of the existence of chloride in the perovskite seems to have now come to a conclusion, no prior work has been carried out focusing on the role of chloride on the electronic performance and the crystallization of the perovskite. Furthermore, current reports on the crystal structure of the perovskite are rather confusing. This article analyzes the role of chloride in CH3NH3PbI3-xClx on the crystal orientation and provides a new explanation about the (110)-oriented growth of CH3NH3PbI3 and CH3NH3PbI3-xClx. View Full-Text
Keywords: solar cells; perovskites; X-ray diffraction; phase transitions solar cells; perovskites; X-ray diffraction; phase transitions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Luo, S.; Daoud, W.A. Crystal Structure Formation of CH3NH3PbI3-xClx Perovskite. Materials 2016, 9, 123.

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