International Display Workshops General Incorporated Association

Proceedings of the International Display Workshops Volume 29 (IDW '22)

Proceedings of the International Display Workshops Volume 29 (IDW '22)

Dec 14, 2022 - Dec 16, 2022
Fukuoka International Congress Center

10:20 AM - 10:40 AM

[OLED1-1 (Invited)] Super-Low-Refractive-Index Hole Transport Layers with Perfluororesin for High-Outcoupling-Efficiency OLEDs

*Daisuke Yokoyama1, Tatsuki Sasaki1, Yasutaka Suzuki1, Takefumi Abe2, Kaori Tsuruoka2, Tatsuya Miyajima2, Toshifumi Kakiuchi2, Chiho Morita2, Masaharu Aoki1, Yasuhiro Ouchi1, Wataru Aita1, Yasuhiro Kuwana2, Yutaka Noguchi3 (1.Yamagata University (Japan), 2.AGC Inc. (Japan), 3.Meiji University (Japan))

OLED, low refractive index, outcoupling efficiency, perfluororesin

https://doi.org/10.36463/idw.2022.0421

One of the promising techniques for enhancement of outcoupling efficiency of OLEDs is to lower the refractive index of charge transport layers. In this study, we effectively lower the refractive index of HTL used for OLEDs by co-depositing a perfluororesin, which is stably evaporable by usual thermal deposition. We achieve a low refractive index of a co-deposited HTL of 1.56 (at 550 nm) without deteriorating its...