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P‐162L: Late‐News Poster : Novel Bipolar Carbazole‐triazole Derivative as Host of Blue PhOLEDs
Author(s) -
Wang PoSheng,
Lin BoYen,
Hsieh YuHsuan,
Leung ManKit,
Lin ChiFeng,
Chiu TienLung,
Lee JiunHaw
Publication year - 2014
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2014.tb00423.x
Subject(s) - phosphorescence , oled , carbazole , quantum efficiency , derivative (finance) , doping , electrical efficiency , phosphorescent organic light emitting diode , photochemistry , host (biology) , materials science , optoelectronics , diode , chemistry , power (physics) , physics , optics , nanotechnology , layer (electronics) , quantum mechanics , financial economics , economics , fluorescence , ecology , biology
A novel carbazole‐triazole derivative was used as a bipolar host of a phosphorescent blue organic light‐emitting diode doped with bis[2‐(4,6‐difluorophenyl)pyridinato‐C 2 , N ](picolmato)iridmm(III) (FIrpic). Maximum current efficiency, power efficiency, and external quantum efficiency of this blue phosphorescent OLED reached 50.30 cd/A and 25.03%, respectively. Efficiency roll‐off was alleviated due to the wide recombination zone, and current efficiency slightly reduced to 46.67 cd/A at 1000 cd/m 2 .