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학술지 Efficient Solution Processed Hybrid White Organic Light-emitting Diodes based on a Blue Thermally Activated Delayed Fluorescence Emitter
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저자
주철웅, Gunel Huseynova, 김지혜, 유재민, 김용현, 조남성, 이재현, 김윤희, 이종희
발행일
202002
출처
Thin Solid Films, v.695, pp.1-6
ISSN
0040-6090
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.tsf.2019.137753
초록
A solution-processed blue thermally activated delayed fluorescence (TADF) aromatic molecule has been introduced to realize high-efficiency hybrid white organic light-emitting diodes (WOLEDs) with very simple structure which contains only three organic layers of hole injection layer, emissive layer (EML), and electron transporting layer. 1,3-Bis(N-carbazolyl)benzene doped with the blue TADF molecule 10-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)-2-methylphenyl)-10H-spiro[acridine-9,9??-fluorene] was mixed with a red phosphorescent emitter, bis(2-methyldibenzo[f,h]quinoxaline) (acetylacetonate) iridium(III) to form a blue-red fluorescent-phosphorescent hybrid EML. The resultant hybrid EML was applied to construct a solution-processed WOLEDs. Hence, a maximum external quantum efficiency of 11.02% and current efficiency of 22.46 cd/A with the Commission Internationale de L'Eclairage coordinates of (0.43, 0.40) were achieved by co-doping of blue and red emitters in a single layer.
키워드
Blue emitter, Solution-processed devices, Thermally activated delayed fluorescence, White organic light-emitting diodes, Hybrid organic light emitting devices
KSP 제안 키워드
6-diphenyl-1, Aromatic molecule, Blue emitter, Co-Doping, Efficient solution, External Quantum Efficiency, Hole injection layer(HIL), Hybrid EML, Organic layers, Organic light-emitting device(OLED), Organic light-emitting diodes(OLEDS)