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P‐170: Molecular Design of Sensitizer for High Efficiency in Hyper‐fluorescent Organic Light‐Emitting Diodes
Author(s) -
Jang Ji Seon,
Han Si Hyun,
Choi Hye Won,
Yook Kyoung Soo,
Lee Jun Yeob
Publication year - 2018
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.12400
Subject(s) - oled , fluorescence , carbazole , benzene , photochemistry , materials science , tris , diode , fluorescent light , chemistry , optoelectronics , organic chemistry , nanotechnology , optics , biochemistry , physics , layer (electronics)
We synthesized two thermally activated delayed fluorescent (TADF) emitters sensitizers, 9,9′,9″‐(5‐(4,6‐diphenyl‐1,3,5‐triazin‐2‐yl)benzene‐1,2,3‐triyl)tris(3,6‐dimethyl‐9H‐carbazole) (TmCzTrz) and 9,9′,9″‐(5‐(4,6‐diphenyl‐1,3,5‐triazin‐2‐yl)benzene‐1,2,3‐triyl)tris(3,6‐di‐tert‐butyl‐9H‐carbazole) (TbCzTrz) to investigate as the sensitizers in hyper‐fluorescent organic light emitting diodes (OLEDs). The difference in two TADF sensitizers was the side group that was consisted of methyl and t‐butyl group. Although the efficiency of TbCzTrz based TADF device was lower than that of the TmCzTrz device, the efficiency of the hyper‐fluorescent device using the as sensitizers was almost the same.