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Materials 2014, 7(6), 4789-4802; doi:10.3390/ma7064789

Photostability of 2D Organic-Inorganic Hybrid Perovskites

1 Laboratoire Aimé Cotton, Ecole Normale Supérieure de Cachan, CNRS, Université Paris Sud, Bâtiment 505, 91404 Orsay, France 2 School of Physics & Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China 3 Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires de l'Ecole Normale Supérieure de Cachan, 61 avenue du Président Wilson, 94 235 Cachan, France
* Author to whom correspondence should be addressed.
Received: 11 May 2014 / Revised: 12 June 2014 / Accepted: 13 June 2014 / Published: 20 June 2014
(This article belongs to the Special Issue Opto-Electronic Materials)
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We analyze the behavior of a series of newly synthesized (R-NH3)2PbX4 perovskites and, in particular, discuss the possible reasons which cause their degradation under UV illumination. Experimental results show that the degradation process depends a lot on their molecular components: not only the inorganic part, but also the chemical structure of the organic moieties play an important role in bleaching and photo-chemical reaction processes which tend to destroy perovskites luminescent framework. In addition, we find the spatial arrangement in crystal also influences the photostability course. Following these trends, we propose a plausible mechanism for the photodegradation of the films, and also introduced options for optimized stability.
Keywords: organic-inorganic hybrid perovskites; photostability organic-inorganic hybrid perovskites; photostability
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Wei, Y.; Audebert, P.; Galmiche, L.; Lauret, J.-S.; Deleporte, E. Photostability of 2D Organic-Inorganic Hybrid Perovskites. Materials 2014, 7, 4789-4802.

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