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26‐1: Invited Paper: Boron Based Deep Blue TADF Materials and Hyperfluorescence Devices
Author(s) -
Lee Hyuna,
Hyuk Kwon Jang
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14680
Subject(s) - full width at half maximum , boron , materials science , optoelectronics , fluorescence , chemistry , optics , physics , organic chemistry
We report boron based deep blue thermally activated delayed fluorescence (TADF) material and its hyperfluorescence devices. Our synthesized TADF materials show EQEs of 30~39% and long device lifetime (LT 90 ) of over 40 hrs at initial luminance of 1,000 cd/m 2 with consideration of the bond dissociation energy and host engineering. The hyperfluorescence device with these TADF hosts shows the high EQE of 39.3% and 19 nm of narrow full width at half medium (FWHM) with maximum peak at 473 nm.