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Blue‐Emitting Heteroleptic Iridium(III) Complexes Suitable for High‐Efficiency Phosphorescent OLEDs
Author(s) -
Yang ChengHan,
Cheng YiMing,
Chi Yun,
Hsu ChiaJung,
Fang FuChuan,
Wong KenTsung,
Chou PiTai,
Chang ChihHao,
Tsai MingHan,
Wu ChungChih
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604733
Subject(s) - iridium , phosphorescence , oled , dopant , quantum efficiency , phosphorescent organic light emitting diode , excited state , materials science , optoelectronics , ligand (biochemistry) , doping , photochemistry , chemistry , fluorescence , nanotechnology , physics , optics , organic chemistry , atomic physics , catalysis , biochemistry , receptor , layer (electronics)
Dyed‐in‐the‐wool true blue : True‐blue phosphorescent organic light‐emitting diodes are fabricated by using an Ir III dopant (see picture; gray C; blue N; red Ir; green F). The Ir complex has an enhanced metal‐to‐ligand charge‐transfer contribution, hence a shortened radiative lifetime in the excited state. The maximum external quantum efficiency of the fabricated device is 8.5 % and the main emission is around 450 nm.
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