Materials 2014, 7(6), 4789-4802; https://doi.org/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)
Abstract
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. View Full-Text
Figure 1
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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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