Date：2016-06-30 |
Views：1888 |
OLED Information 20160630 |
Highly Efficient Blue Phosphorescent Organic Light-Emitting Diodes Employing a Host Material with Small Bandgap
Article excerpt is from: Lei Zhang, Ye-Xin Zhang, Yun Hu, Xiao-Bo Shi, Zuo-Quan Jiang, Zhao-Kui Wang, and Liangsheng Liao
ACS Appl. Mater. Interfaces. 2016, in press
Blue phosphorescent organic light-emitting diode (PhOLED) with a high maximum
external quantum efficiency (EQE) of 26.6% was achieved using a new material,(DBF-DMS) with a small bandgap, as the host.
The PHOLEDs with DBF-DMS as the host have improved performance than those with mCP, which is ascribed to the enhancements in carrier injection/transporting abilities and material stability of DBF-DMS. A T50 lifetime of 122.6 h is obtained by utilizing suitable transporting materials and device structure.
