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6‐3: Efficient and Long Lifetime Blue TADF and Deep Blue Hyper Fluorescent Materials and Devices
Author(s) -
Karthik Durai,
Ahn Dae Hyun,
Maeng Jee Hyun,
Lee Hyuna,
Yoo Hanjong,
Lampande Raju,
Lee Ju Young,
Kwon Jang Hyuk
Publication year - 2020
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.13804
Subject(s) - fluorescence , deep blue , dopant , materials science , optoelectronics , blueshift , blue light , dissociation (chemistry) , high energy , photochemistry , chemistry , optics , doping , engineering physics , photoluminescence , physics
We report a blue TADF device with high efficiency of 26.3% and long device lifetime (LT 90 ) of 93 hrs at 1000 cd/m 2 , respectively. This good device lifetime is achieved by avoiding material degradation by using high bond dissociation energy materials. In addition, a deep blue hyper fluorescence device using KH‐2 as an emitting dopant shows high EQE of 36.8% with CIE of (0.14, 0.08).