International Display Workshops General Incorporated Association

10:00 〜 10:20

[MEET3-4(Invited)] High Efficiency Cadmium-free Red Quantum Dot-Light Emitting Diodes

*Jang Hyuk Kwon1 (1. Kyung Hee University (Korea))

Cadmium-free QDs, Inverted QD-LED, aging, high efficiency

https://doi.org/10.36463/idw.2019.1459

We report a high efficiency inverted red indium phosphide (InP) based quantum dot-light emitting diode (QD-LED) by optimizing InP-QD properties as well as interfacial contact between electron transport layer and emissive QDs, and applying self-aging approach. Our QD-LED exhibits substantial improvement in the external quantum efficiency from 4.42 to 10.2% after several days of self-aging.