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Perovskite Light‐Emitting Diodes: High‐Performance Blue Perovskite Light‐Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi‐2D Perovskite Layers (Adv. Mater. 1/2021)
Author(s) -
Ren Zhenwei,
Yu Jiahao,
Qin Zhaotong,
Wang Jing,
Sun Jiayun,
Chan Christopher C. S.,
Ding Shihao,
Wang Kai,
Chen Rui,
Wong Kam Sing,
Lu Xinhui,
Yin WanJian,
Choy Wallace C. H.
Publication year - 2021
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.202170006
Subject(s) - perovskite (structure) , materials science , passivation , optoelectronics , diode , light emitting diode , bifunctional , van der waals force , energy transfer , band gap , nanotechnology , chemical engineering , chemical physics , layer (electronics) , molecule , physics , chemistry , catalysis , engineering , biochemistry , quantum mechanics
The coupling of quasi‐2D perovskite layers is demonstrated by Kai Wang, Rui Chen, Wallace C. H. Choy, and co‐workers in article number 2005570. Their results show that a bifunctional ligand can simultaneously diminish the weak van der Waals gap and passivate perovskite defects for efficient energy transfer and radiative recombination. They fabricate blue PeLEDs that show high performance with an EQE of 10.11% and a long stability of 81.3 min.