[25a-22B-1~10] 12.4 Organic light-emitting devices and organic transistors

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[25a-22B-6] An aluminum(III)-TADF complex as a sensitizer realizing highly efficient solution-processed hyper OLEDs with narrow emission

Keigo Hoshi¹, Yudai Chiba¹, 〇Hisahiro Sasabe^1,2,3, Junji Kido^1,2,3 (1.Dept. of Organic Materials Science, Yamagata Univ., 2.ROEL, Yamagata Univ., 3.FROM, Yamagata Univ.)

Keywords:

OLED,TADF,sensitizer

In this study, we present a highly emissive aluminum(III)-TADF complex, Al(MCzDBM)3 with three beta-diketone ligands, as a sensitizer for multiresonance (MR)-TADF emitters. The solution-processed Al(MCzDBM)3-based OLED exhibited an external quantum efficiency (EQE) of 23.6%. This complex sensitized the yellow MR-TADF emitter yielding a near-unity PLQY, and realizing a solution-processed hyper-OLED with an EQE of 21.6% and full width at half maximum of 45 nm.