상세정보
학술지
Simplified Bilayer White Phosphorescent Organic Light-Emitting Diodes
- 발행일
- 201604
- 출처
- ETRI Journal, v.38 no.2, pp.260-264
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 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.
- 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