[17p-B6-1~16] 12.4 Organic light-emitting devices and organic transistors

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[17p-B6-12] Investigation on phtophysical properties of 1,3,2,4 - Diazadiboretidine

〇(B)Hyunje Jung¹, Youichi Tsuchiya¹, Keito Mizukoshi¹, Yoshiaki Shoji^2,3, Takanori Fukushima^2,3, Chihaya Adachi^1,4 (1.OPERA, Kyushu Univ., 2.ASMat, Tokyo Tech., 3.CLS, Tokyo Tech., 4.I2CNER, Kyushu Univ.)

Keywords:

thermally activated delayed fluorescence,emission mechanism,comprehensive analysis

TADF has been actively studied as a third-generation emitter for OLEDs. TADF obtained 100% internal quantum efficiency owing to its small gap between singlet and triplet excited states. Furthermore, an inverted singlet triplet gap (InvEST) materials were proposed. 1,3,2,4-Diazadiboretidine (DADBT) was once reported as room temperature phosphorescence material, but advanced calculation suggested DADBT as an InvEST candidate. Thus, we conducted precise experiments and calculations to identify an actual emission mechanism of DADBT.