Title :
High Energy Gap OLED Host Materials for Green and Blue PHOLED Materials
Author :
Lin, Chi-Jen ; Huang, Heh-Lung ; Tseng, Mei-Rurng ; Cheng, Chien-Hong
Author_Institution :
Dept. of Chem., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
6/1/2009 12:00:00 AM
Abstract :
In this paper, we developed a series of novel arylamino-containing spiro triplet state host materials for green and blue phosphorescent emitters. With high enough energy gap and compatible HOMO, LUMO levels, we demonstrated the green PHOLED with a low driving voltage of 2.5 V and a high power efficiency of 38.5 lm/W. We also demonstrated blue PHOLED with a very low driving voltage of 3.0 V and a current efficiency of 9.2 cd/A.
Keywords :
organic light emitting diodes; phosphorescence; PHOLED materials; arylamino-containing spiro triplet state host material; high energy gap OLED host material; organic light-emitting diode; phosphorescent emitter; voltage 2.5 V; Blue and green phosphorescent organic light-emitting diode (OLED); OLEDs; host material;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2008.2007750
