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1,3‐Diphenyl‐5‐(9‐phenanthryl)‐2‐pyrazoline(DPPhP): An Excellent Hole‐Transport Material for Use in Organic Light‐Emitting Diodes
Author(s) -
Ma ChangQi,
Zhang LianQi,
Zhou JiaHong,
Wang XueSong,
Zhang BaoWen,
Cao Yi,
Bug P.,
Schaer M.,
Nüesch F.,
Zhang DeQiang,
Qiu Yong
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020201002
Subject(s) - oled , chemistry , pyrazoline , electroluminescence , optoelectronics , diode , quantum efficiency , glass transition , photochemistry , polymer , medicinal chemistry , organic chemistry , materials science , layer (electronics)
An excellent hole‐transport material, 1, 3‐diphenyil‐5‐(9‐phenanthryl)‐2‐pyrazoline (DPPhP) for OLEDs was studied. This compound not only offers high glass transition temperature ( T g = 96 °C), good film forming ability, and high HOMO energy level, but also displays excellent hole‐transport property. The electroluminescent device with a simple structure of ITO/DPPhP (60 nm)/AlQ (60 nm)/LiF (0.8 nm)/Al shows an external quantum efficiency as high as 1.6%.