Title :
High-Efficiency Blue Emitting Phosphorescent OLEDs
Author :
Chopra, Neetu ; Lee, Jaewon ; Xue, Jiangeng ; So, Franky
Author_Institution :
Dept. of Mater. Sci. & Eng., Univ. of Florida, Gainesville, FL, USA
Abstract :
In this paper, we will show our latest results on high-efficiency blue phosphorescent organic light-emitting diodes (PHOLEDs). Effects of triplet exciton confinement, exciton energy transfer and charge trapping, and charge balance on iridium(III)bis [(4,6-di-fluorophenyl)-pyridinato-N,C2´] picolinate (FIrpic)-based blue PHOLEDs will be presented. By optimizing the aforementioned device parameters, a high-efficiency blue PHOLED with 59 cd/A (48 lm/W at 100 cd/m2) was demonstrated.
Keywords :
electron traps; excitons; organic light emitting diodes; phosphorescence; blue emitting phosphorescent; charge balance; charge trapping; exciton energy transfer; organic light-emitting diodes; triplet exciton confinement; Energy exchange; Excitons; Flat panel displays; Glass; Light emitting diodes; Manufacturing processes; Microcavities; Organic light emitting diodes; Organic materials; Phosphorescence; Blue phosphorescent; FIrpic; charge balance; microcavity; organic light-emitting diode (OLED); triplet exciton;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2009.2035028
