전면 유기발광 다이오드 기능층 캐핑레이어 적용에 따른 효율상승에 관한 연구A Study on the Efficiency Effects of Capping Layer on the Top Emission Organic Light Emitting Diode
- Other Titles
- A Study on the Efficiency Effects of Capping Layer on the Top Emission Organic Light Emitting Diode
- Authors
- 권상직; 이동운; 조의식; 전용민
- Issue Date
- Sep-2022
- Publisher
- 한국반도체디스플레이기술학회
- Keywords
- Organic light-emitting diode (OLED); Top emission organic light-emitting diode (TEOLED); Alq3; NPB; Micro-Cavity effect; Hole transport layer (HTL); Emission material layer (EML); Mg : Ag; LiF; Capping layer(CPL)
- Citation
- 반도체디스플레이기술학회지, v.21, no.3, pp.119 - 124
- Journal Title
- 반도체디스플레이기술학회지
- Volume
- 21
- Number
- 3
- Start Page
- 119
- End Page
- 124
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/85713
- ISSN
- 1738-2270
- Abstract
- Top emission organic light-emitting diode (TEOLED) is commonly used because of high efficiency and good color purity than bottom – emission organic light-emitting device (BEOLED). Unlike BEOLED, TEOLED contain semitransparent metal cathode and capping layer. Because there are many characteristics to consider just simple thickness change, optimizing organic thickness of TEOLED for microcavity is difficult. So, in this study, we optimized Device capping layer at unoptimized micro-cavity structure TEOLED device. And we compare only capping layer with unoptimized microcavity structure can overcome optimized micro-cavity structure device. We used previous our optimized micro-cavity structure to compare each other. As a result, it has been found that the efficiency can be obtained almost the same or higher only capping layer, which is stacked on top of the device and controls only the thickness and refractive index, without complicated structural calculations. This means that higher efficiencies can be obtained more easily in laboratories with limited organic materials or when optimizing new structures etc.
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