Open AccessStabilized Wide Bandgap MAPbBr x I 3– x Perovskite by Enhanced Grain Size and Improved Crystallinity
Author(s) -
Hu Miao,
Bi Cheng,
Yuan Yongbo,
Bai Yang,
Huang Jinsong
Publication year - 2016
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201500301
Subject(s) - crystallinity , perovskite (structure) , grain size , materials science , band gap , crystallography , mineralogy , optoelectronics , chemistry , composite material
The light instability of CH 3 NH 3 PbI x Br 3– x is one of the biggest challenges for its application in tandem solar cells. Here we show that an improved crystallinity and grain size of CH 3 NH 3 PbI x Br 3– x films could stabilize these materials under one sun illumination, improving both the efficiency and stability of the wide‐bandgap perovskite solar cells.