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Development of solution-processable blue/hybrid-white OLEDs based on thermally activated delayed fluorescence
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- Authors
- Chul Woong Joo, Hyunsu Cho, Byoung-Hwa Kwon, Nam Sung Cho, Youheon Kim, Yun-Hi Kim, Jonghee Lee
- Issue Date
- 2018-09
- Citation
- Journal of Industrial and Engineering Chemistry, v.65, pp.35-39
- ISSN
- 1226-086X
- Publisher
- 한국공업화학회
- Language
- English
- Type
- Journal Article
- Abstract
- In this work, hybrid-WOLEDs are fabricated by employing single emitting layers (S-EMLs), which consist of 5-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-10,10-diphenyl-5,10-dihydrodibenzo[b,e][1,4]azasiline (DTPDDA) as a blue thermally activated delayed fluorescent (TADF) emitter and bis(2-methyldibenzo[f,h]quinoxaline) (acetylacetonate)iridium(III) (Ir(MDQ)2acac) as a phosphorescent red emitter. This architecture employs EMLs of a blue exciplex-forming co-host, which are hole transport type host material was 1,3-bis(N-carbazolyl) benzene (mCP) and the electron transport type host material was diphenylphosphine oxide-4-(triphenylsilyl)phenyl (TSPO1). The resulting hybrid-WOLEDs showed maximum external quantum efficiency (EQE) of 6.16% and current efficiency (CE) of 11.58 cd/A with Commission Internationale de L'Eclairage coordinates of (0.32, 0.33).
- KSP Keywords
- 6-diphenyl-1, Co-host, Diphenylphosphine oxide, Electron Transport, External Quantum Efficiency, Hole transport, Red emitter, current efficiency, host material, solution-processable, thermally activated delayed fluorescence