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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
X-ray diffraction data of CH3NH3PbBr3 deposited on a TiO2 scaffold layer (a) as made and (b) after 24 h exposure to UV light and 70% relative humidity.