전면 발광 유기 발광 소자용 반투명 금속의 전기적 및 광학적 특성Electrical and Optical Properties of Semitransparent Metal Electrodes for Top-emission Organic Light-emitting Diodes
- Other Titles
- Electrical and Optical Properties of Semitransparent Metal Electrodes for Top-emission Organic Light-emitting Diodes
- Authors
- 신은철; 안희철; 김태완
- Issue Date
- 2008
- Publisher
- 한국전기전자재료학회
- Keywords
- Organic light-emitting diodes; Top emission; Transmittance; Sheet resistance
- Citation
- 전기전자재료학회논문지, v.21, no.10, pp.938 - 942
- Journal Title
- 전기전자재료학회논문지
- Volume
- 21
- Number
- 10
- Start Page
- 938
- End Page
- 942
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/22966
- ISSN
- 1226-7945
- Abstract
- Electrical and optical properties of semitransparent Ag and Al layer were studied, which are used for the electrodes in top-emission organic light-emitting diodes. Sheet resistance and transmittance of visible light through a thin layer were measured and analyzed. Several thin metal layers of Ag and Al were deposited onto a glass substrate up to a thickness of 50 nm using a thermal evaporation. Sheet resistance measurements show that a layer thickness is needed more than 15 nm and 20 nm for Ag and Al, respectively, when a proper sheet resistance is assumed to be less than 50 Ω/sq. From the measurements of transmittance of visible light through a thin-metal layer, metallic behavior was observed when the layer thickness is over 25 nm for both films. Thus, from a study of sheet resistance and transmittance of visible light, a minimum proper thickness of semitransparent metal layer is 20 nm and 25 nm for Ag and Al, respectively.
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Collections - College of Engineering > Department of Science > 1. Journal Articles
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