[OLEDp1-1] Deep-Blue Narrowband Multi Resonance Thermally Activated Delayed Fluorescent Emitters for Efficient Organic Light Emitting Diodes | Proceedings of the International Display Workshops Volume 29 (IDW '22)

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

Dec 14 - Dec 16, 2022Fukuoka International Congress Center

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

Dec 14 - Dec 16, 2022Fukuoka 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))

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

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Keywords:

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

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 × 10⁵s^-.1. Fabricated TADF devices showed maximum external quantum efficiencies of 30.7 and 32.5% respectively.

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