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Construction of ultra‐stable perovskite–polymer fibre membranes by electrospinning technology and its application to light‐emitting diodes
Author(s) -
Bi Huan,
Liu Fangyu,
Wang Mian,
Mao Zhu,
Zhai Yuehui,
Li Wei,
Wang Shiwei,
Zhang Mingyao
Publication year - 2021
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.6094
Subject(s) - materials science , electrospinning , membrane , photoluminescence , perovskite (structure) , polymer , polystyrene , light emitting diode , diode , chemical engineering , nanofiber , optoelectronics , nanotechnology , composite material , chemistry , biochemistry , engineering
Recently, organometallic halide perovskites have shown attractive application prospects in photoelectric devices depending on their excellent electro‐optic properties. However, their poor stability has greatly limited their practical applications. Here, methylammonium lead tribromide (MAPbBr 3 ) crystals are protected by polystyrene (PS) fibre membranes using electrospinning technology. The MAPbBr 3 @PS composite fibre membranes fabricated in this work not only show strong photoluminescence properties but also excellent stability: 70% of the fluorescence intensity of MAPbBr 3 @PS is maintained after soaking in water for 30 days, 85% after leaving at 95 °C for 350 min, and 90% after irradiating under UV light for 100 h. The excellent stability of the MAPbBr 3 @PS fibre membranes may be attributed to the hydrogen bonds between the MAPbBr 3 crystal and the PS fibre. In addition, a high‐brightness white‐light‐emitting diode based on MAPbBr 3 @PS fibre was fabricated, which fully demonstrates its application prospects in the field of colour conversion. © 2020 Society of Industrial Chemistry