Organic materials for deep blue phosphorescent organic light-emitting diodes.
Recently, great progress has been made in the device performance of deep blue phosphorescent organic light-emitting diodes (PHOLEDs) by developing high triplet energy charge-transport materials, high triplet energy host and deep blue emitting phosphorescent dopant materials. A high quantum efficiency of over 25% and a high power efficiency of over 15 lm/W have already been achieved at 1000 cd m(-2) in the deep blue PHOLEDs with a y color coordinate less than 0.20. In this work, recent developments in organic materials for high efficiency deep blue PHOLEDs are reviewed and a future strategy for the development of high efficiency deep blue PHOLEDs is proposed.
Department of Polymer Science and Engineering, Dankook University, Jukjeon-dong, Suji-gu, Yongin, Gyeonggi, Korea.
Kyoung Soo
KS
Yook
Jun Yeob
JY
Lee
D003116:Color; D008027:Light; D049408:Luminescent Agents / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D012666:Semiconductors
D049408:Luminescent Agents; D009930:Organic Chemicals