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학술지 Simplified Bilayer White Phosphorescent Organic Light-Emitting Diodes
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저자
이종희, 성우진, 주철웅, 조현수, 조남성, 이가원, 황도훈, 이정익
발행일
201604
출처
ETRI Journal, v.38 no.2, pp.260-264
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.16.2515.0011
협약과제
15PB1500, AMOLED TV용 soluble TFT 및 화소 형성 소재/공정 기술 개발, 이종희
초록
We report on highly efficient blue, orange, and white phosphorescent organic light-emitting diodes consisting only two organic layers. Hole transporting 4, 4,?? 4??-tris (N-carbazolyl)triphenylamine (TcTa) and electron transporting 2-(diphenylphosphoryl) spirofluorene (SPPO1) are used as an emitting host for orange lightemitting bis(3-benzothiazol-2-yl-9-ethyl-9H-carbazolato) (acetoacetonate) iridium ((btc)2(acac)Ir) and blue lightemitting iridium(III)bis(4,6-difluorophenyl-pyridinato- N,C2??) picolinate (FIrpic) dopant, respectively. Combining these two orange and blue light-emitting layers, we successfully demonstrate highly efficient white PHOLEDs while maintaining Commission internationale de l'챕clairage coordinates of (x = 0.373, y = 0.443). Accordingly, we achieve a maximum external quantum, current, and power efficiencies of 12.9%, 30.3 cd/A, and 30.0 lm/W without out-coupling enhancement.
키워드
Bilayer, OLED, Organic light-emitting diodes, Phosphorescent, Simple, White
KSP 제안 키워드
Blue light-emitting, Electron transporting, Organic layers, Organic light-emitting diodes(OLEDS), coupling enhancement, highly efficient, light-emitting diode(LED), out-coupling, phosphorescent organic light-emitting diodes