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Engineering Halide Perovskite Crystals through Precursor Chemistry
Author(s) -
Li Bo,
Binks David,
Cao Guozhong,
Tian Jianjun
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201903613
Subject(s) - halide , perovskite (structure) , crystallization , crystallinity , materials science , photovoltaics , thin film , chemical engineering , fabrication , colloid , nanotechnology , inorganic chemistry , chemistry , photovoltaic system , medicine , ecology , alternative medicine , pathology , engineering , composite material , biology
The composition, crystallinity, morphology, and trap‐state density of halide perovskite thin films critically depend on the nature of the precursor solution. A fundamental understanding of the liquid‐to‐solid transformation mechanism is thus essential to the fabrication of high‐quality thin films of halide perovskite crystals for applications such as high‐performance photovoltaics and is the topic of this Review. The roles of additives on the evolution of coordination complex species in the precursor solutions and the resulting effect on perovskite crystallization are presented. The influence of colloid characteristics, DMF/DMSO‐free solutions and the degradation of precursor solutions on the formation of perovskite crystals are also discussed. Finally, the general formation mechanism of perovskite thin films from precursor solutions is summarized and some questions for further research are provided.