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학술지 Improvements of Phosphorescent White OLEDs Performance for Lighting Application
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저자
이종희, 추혜용, 이정익, 송기임, 이수진
발행일
200810
출처
Journal of Nanoscience and Nanotechnology, v.8 no.10, pp.5185-5187
ISSN
1533-4880
출판사
American Scientific Publishers (ASP)
DOI
https://dx.doi.org/10.1166/jnn.2008.1428
초록
We developed white OLED device with high power efficiency, in which blue and orange phosphorescent emitters were used. By introduction of multi-functional interlayer which has partial doping of orange dopant inside EBL, we report WOLEDs with peak external efficiencies up to (14.1% EQE, 31.3 Im/W) without light out-coupling technique. At 1000 cd/m 2, the performance achieved was 11.9% EQE, 18.7 Im/W with CIE = (0.39, 0.44). We also found that WOLED performances are related with doping ratio of the orange dopant that was inserted inside EBL. Copyright © 2008 American Scientific Publishers All rights reserved.
KSP 제안 키워드
Coupling technique, Doping ratio, Functional interlayer, Light outcoupling, Partial doping, Phosphorescent emitter, high power efficiency, multi-functional, white OLEDs