[OLEDp1] OLED poster

[OLEDp1-12L] Efficient blue phosphorescent organic light-emitting diodewith long triplet lifetime TADF host

Tien-Lung Chiu¹, Tse-Ying Chen², Yi-May Huang³, Man-Kit Leung³, Jiun-Haw Lee³, *YU-CHENG CHIU² (1. Yuan Ze University (Taiwan), 2. National Taiwan University of Science and Technology (Taiwan), 3. National Taiwan University (Taiwan))

Keywords:organic light-emitting diode, long triplet lifetime, thermal activated delay florescent

A new wide bandgap material, CbzBzCN, was successfully synthesized to be the host of an efficient blue phosphorescent light emitting diode (OLED), which also particularly performs a very long lifetime of triplet excitons reach approximate 2 msec. The OLED showed the maximum current efficiency and external quantum efficiency of 46.3 cd/A and 18.7%, respectively.