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Enhanced Optical and Electrical Properties of Polymer‐Assisted All‐Inorganic Perovskites for Light‐Emitting Diodes
Author(s) -
Ling Yichuan,
Tian Yu,
Wang Xi,
Wang Jamie C.,
Knox Javon M.,
PerezOrive Fernando,
Du Yijun,
Tan Lei,
Hanson Kenneth,
Ma Biwu,
Gao Hanwei
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201602513
Subject(s) - materials science , electroluminescence , perovskite (structure) , optoelectronics , photoluminescence , light emitting diode , diode , quantum yield , quantum efficiency , chemical engineering , nanotechnology , optics , physics , layer (electronics) , engineering , fluorescence
Highly bright light‐emitting diodes based on solution‐processed all‐inorganic perovskite thin film are demonstrated. The cesium lead bromide (CsPbBr 3 ) created using a new poly(ethylene oxide)‐additive spin‐coating method exhibits photoluminescence quantum yield up to 60% and excellent uniformity of electrical current distribution. Using the smooth CsPbBr 3 films as emitting layers, green perovskite‐based light‐emitting diodes (PeLEDs) exhibit electroluminescent brightness and efficiency above 53 000 cd m −2 and 4%: a new benchmark of device performance for all‐inorganic PeLEDs.