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Trivalent‐Neodymium Additive Modulated MAPbBr 3 Perovskite Nucleation and Growth: Ultrawide Processing Window for One‐Step Fabrication of Efficient Light‐Emitting Perovskites
Author(s) -
Dong Yurong,
Zeng Pan,
Yu Yan,
Xie Yujun,
Yang Bilin,
Liang Rongqing,
Ou Qiongrong,
Zhang Shuyu
Publication year - 2020
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201901162
Subject(s) - materials science , nucleation , perovskite (structure) , light emitting diode , photoluminescence , optoelectronics , quantum yield , fabrication , neodymium , halide , nanotechnology , laser , optics , chemical engineering , inorganic chemistry , fluorescence , chemistry , medicine , physics , alternative medicine , organic chemistry , pathology , engineering
Hybrid metal halide perovskite–based light‐emitting diodes and lasers have demonstrated outstanding performance and currently lead a new trend in the optoelectronic field; however, the widely used one‐step spin‐coating method assisted by an antisolvent suffers from the narrow processing window of antisolvents, which limits its further use in commercial applications. The present work incorporates trivalent‐neodymium ions (Nd 3+ ) into methylammonium lead tribromide (MAPbBr 3 ) perovskite thin films to control nucleation and crystal growth, achieving an ultrabroad processing window of 18 s, significantly larger than the conventional processing window of 3–5 s. A sixfold enhanced photoluminescence quantum yield (PLQY) and an excellent stability of at least 8 months in ambient conditions is also demonstrated. The results provide a deeper understanding of the nucleation and growth process of ion‐incorporated perovskites and demonstrate an effective strategy to overcome the narrow processing window limit.