상세정보
학술지
Triplet Harvesting for Efficient White Organic Light Emitting Diodes
- 발행일
- 200810
- 출처
- Journal of Nanoscience and Nanotechnology, v.8 no.10, pp.5602-5605
- ISSN
- 1533-4880
- 출판사
- American Scientific Publishers (ASP)
- 협약과제
- 06IB2300, 고효율 백색 OLED 소자 기술 개발, 추혜용
- 초록
- A novel hybrid device structure for efficient white organic light emitting diodes has been developed, which has a high hole injection barrier between a fluorescence blue emission layer and a electron transporting layer, and therefore excitons could be confined in the emission layer close to the electron transporting layer. A phosphorescent red dopant has been introduced into the electron transporting layer to harvest triplet states of the fluorescent blue emission layer and we have succeeded in obtaining the balanced white emission from blue singlet excitons and red triplet excitons with high efficiency. The optimized device showed the maximum external quantum efficiency of about 25% at 100cd/m 2. Copyright © 2008 American Scientific Publishers All rights reserved.
- KSP 제안 키워드
- Blue emission, Device structure, External Quantum Efficiency, Hole injection barrier, Organic light-emitting diodes(OLEDS), Red dopant, Singlet excitons, Triplet exciton, Triplet harvesting, Triplet state, White organic light-emitting diodes