High Efficiency Cadmium-free Red Quantum Dot-Light Emitting Diodes

Jang Hyuk Kwon

講演情報

Oral Presentation

[MEET3] Emerging Quantum Dots and Nanotechnologies (1)

Special Topics of Interest on Quantum Dot Technologies

2019年11月29日(金) 09:00 〜 10:20 Conference Hall (1F)

Chair: Christophe Martinez (CEA LETI)
Co-Chair: Haizheng Zhong (Beijing Institute of Technology)

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))

キーワード：Cadmium-free QDs, Inverted QD-LED, aging, high efficiency

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.