Photostability of 2D Organic-Inorganic Hybrid Perovskites

Materials

Yi Wei²  Pierre Audebert¹  Laurent Galmiche¹  Jean-Sstien Lauret² 

[1] Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires de l’Ecole Normale Supérieure de Cachan, 61 avenue du Président Wilson, 94 235 Cachan, France; E-Mails:;Laboratoire Aimé Cotton, Ecole Normale Supérieure de Cachan, CNRS, Université Paris Sud, Bâtiment 505, 91404 Orsay, France; E-Mails:

关键词: organic-inorganic hybrid perovskites;    photostability;   

DOI  :  10.3390/ma7064789

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.