Proceedings of the International Display Workshops Volume 31 (IDW '24)
Dec 4 - Dec 6, 2024Sapporo Convention Center
Proceedings of the International Display Workshops Volume 31 (IDW '24)
Dec 4 - Dec 6, 2024Sapporo Convention Center
[OLEDp2-6]Degradation Properties of Alq3-Based Organic Light-Emitting Diodes with Dipolar Doping Hole Transport Layers
*Mihiro Takeda1, Alexander Bruetting Hofmann2, Wolfgang Bruetting2, Yutaka Noguchi1(1. Meiji University (Japan), 2. University of Augsburg (Germany))
Keywords:
OLED,spontaneous orientation polarization (SOP),dipolar doping
We investigated the degradation mechanism of Alq3-based organic light-emitting diodes with modified charge accumulation properties by "dipolar doping" in hole transport layers (HTLs). The results suggest that the excess accumulated holes induced at the HTL/emission layer interface due to spontaneous orientation polarization are not much involved in the degradation mechanism.