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)

2022年12月14日 〜 2022年12月16日
Fukuoka International Congress Center

[OLEDp1-1] Deep-Blue Narrowband Multi Resonance Thermally Activated Delayed Fluorescent Emitters for Efficient Organic Light Emitting Diodes

*Seung Hyun Lee1、Kenkera Rayappa Naveen1、Young Hun Jung1、Jang Hyuk Kwon1 (1. Kyung Hee University (Korea))

Deep Blue, Narrowband , Thermally Activated Delayed Fluorescence, Multiple Resonance Effect

https://doi.org/10.36463/idw.2022.0464

We designed two new deep blue MR type emitters TPD4PA and tBu-TPD4PA. Both emitters showed deep blue emissions of ~450nm and achieved very small Est and high rate of reverse intersystem crossing of ~2.5 × 105 s-.1. Fabricated TADF devices showed maximum external quantum efficiencies of 30.7 and 32.5% respectively.