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 highly 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 bi-layered and triple-layered 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 :
Carrier confinement; Doping; Excitons; Flat panel displays; Fluorescence; Nonhomogeneous media; Organic light emitting diodes; Phosphorescence; Photonic band gap; 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
