Thursday, May 2025

09:20 AM - 09:40 AM

Room: LL20BC

Session: OLED Emissive Material

Highly Efficient and Stable Narrow-Band MR-TADF Emitter for Top-Emission Red OLED Approaching B.T.2020

Student

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  Professor

  Jang Hyuk Kwon , PhD

  Kyung Hee University

Description:

We reported two narrowband red MR-TADF emitters KHU-RD-01 and KHU-RD-02 by introducing five-membered heterocyclic scaffolds. These emitters exhibited red emission at 613 nm with narrow band FWHM of 32 nm. The fabricated BE-OLED exhibited high EQEmax of 22% with long lifetime of LT95 2039 h @ 1000 cd/m2 and further to improve the color purity, we optimized TE-OLED with KHU-RD-02 results in high current efficiency of 41.26 cd/A with CIE (x, y) = (0.68, 0.32) approaching near to B.T.2020