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학술지 Optical Effects of Graphene Electrodes on Organic Light-Emitting Diodes
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저자
조현수, 신진욱, 조남성, 문제현, 한준한, 권영덕, 조승민, 이정익
발행일
201601
출처
IEEE Journal of Selected Topics in Quantum Electronics, v.22 no.1, pp.1-6
ISSN
1077-260X
출판사
IEEE
DOI
https://dx.doi.org/10.1109/JSTQE.2015.2475184
협약과제
14PB2400, 그래핀 소재의 OLED 투명전극과 박막봉지 적용을 위한 기판 사이즈 5.5세대 이상의 그래핀 필름 및 OLED 소자/패널 기초 및 응용 기술 개발, 이정익
초록
We performed optical simulations and experiments to investigate the internal optics of graphene anode organic light-emitting diodes (OLEDs). The efficiencies, emission distribution, and spectral characteristics of four-layered graphene anode OLEDs were extracted and compared to those of ITO anode OLEDs. Unlike the case of the ITO anode OLED, the efficiencies and emission distributions of graphene anode OLEDs showed a weak dependency on the thickness of the organic layers. Furthermore, marginal changes in the emission spectra were observed. These results were ascribed to the negligible presence of a microcavity effect in the graphene anode OLED.
키워드
Graphene, Organic light emitting diodes, Transparent electrode
KSP 제안 키워드
Microcavity effect, Optical effects, Optical simulation, Organic layers, Organic light-emitting diodes(OLEDS), Spectral characteristics, emission spectra, graphene anode, graphene electrode, light-emitting diode(LED), transparent electrode