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Perovskite Quantum Dots: CsPbBr 3 ‐Quantum‐Dots/Polystyrene@Silica Hybrid Microsphere Structures with Significantly Improved Stability for White LEDs (Advanced Optical Materials 13/2019)
Author(s) -
Yang Weiqiang,
Gao Fei,
Qiu Yue,
Liu Weizhen,
Xu Haiyang,
Yang Lili,
Liu Yichun
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201970048
Subject(s) - materials science , polystyrene , quantum dot , photoluminescence , phosphor , quantum yield , light emitting diode , optoelectronics , mesoporous material , diode , perovskite (structure) , microsphere , fluorescence , nanotechnology , chemical engineering , composite material , catalysis , optics , polymer , physics , chemistry , engineering , biochemistry
In article number 1900546, Weizhen Liu, Haiyang Xu, and co‐workers synthesize hybrid microspheres of CsPbBr 3 perovskite quantum dots (PQDs) embedded in mesoporous polystyrene microspheres covered by a silica shell (CsPbBr 3 ‐PQDs/MPMs@SiO 2 ), which exhibit high photoluminescence quantum yield of 84% and significantly enhanced stability, via a simple hydrolysis–encapsulation strategy. Enhanced chemical/physical stabilities make these CsPbX 3 PQDs suitable for applications even in harsh environments. A phosphor‐type white light‐emitting diode has been fabricated based on these fluorescent microspheres, demonstrating a high power efficiency of 81 lm W −1 and good continuous working stability.