Title :
High efficiency and simple architecture phosphorescent OLEDs
Author :
Park, Tae Jin ; Jeon, Woo Sik ; Kwon, Jang Hyuk
Author_Institution :
Department of Information Display, Kyung Hee University, Dongdaemoon-gu, Seoul 130-701, Korea
Abstract :
We present an ideal host-guest concept for high efficient phosphorescent OLEDs (PHOLEDs). Highly efficient PHOLEDs with an extremely low doping concentration of 1% are developed. The origin of such a low doping is revealed by energy transfer mechanism studies and ideal host-guest concept. Simple architectures for PHOLEDs are realized based on this ideal host guest concept. Organic double layer and triple layer architectures for PHOLEDs with high efficiency are reported. Results reveal a practical way to fabricate the highly efficient simple structure devices for trouble-free manufacturing processes.
Keywords :
Brightness; Doping; Energy exchange; Excitons; Flat panel displays; Fluorescence; Nonhomogeneous media; Organic light emitting diodes; Phosphorescence; Voltage;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
