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33‐2: Invited Paper: Lifetime Improvement of Thermally Activated Delayed Fluorescent Organic Light‐Emitting Diodes
Author(s) -
Lee Ho Jung,
Lee Kyung Hyung,
Lee Jun Yeob,
Hong Wan Pyo,
Song Ok-Keun
Publication year - 2019
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.12956
Subject(s) - phosphorescence , oled , fluorescence , intersystem crossing , diode , materials science , optoelectronics , quantum efficiency , phosphorescent organic light emitting diode , light emitting diode , photochemistry , chemistry , optics , nanotechnology , excited state , physics , singlet state , layer (electronics) , nuclear physics
The external quantum efficiency of thermally activated delayed fluorescent organic light‐emitting diodes has been improved to the same level of phosphorescent organic light‐emitting diodes. However, the lifetime of the thermally activated delayed fluorescent organic light‐emitting diodes is not comparable to that of the phosphorescent organic light‐emitting diodes. Therefore, the lifetime of the thermally activated delayed fluorescent devices needs to be extended. In this work, the lifetime extending strategy of thermally activated delayed fluorescent organic light‐emitting diodes from molecular design approach is proposed. The molecules with a chemical bond stabilizing molecular design and high reversed intersystem crossing rate were effective to extend the lifetime of the thermally activated delayed fluorescent organic light‐emitting diodes.