Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Study on the Efficiency Effects of Capping Layer on the Top Emission Organic Light Emitting Diode

전면 유기발광 다이오드 기능층 캐핑레이어 적용에 따른 효율상승에 관한 연구

  • Lee, DongWoon (Department of Electronics Engineering, Gachon University) ;
  • Cho, Eou Sik (Department of Electronics Engineering, Gachon University) ;
  • Jeon, Yongmin (Department of Biomedical Engineering, Gachon University) ;
  • Kwon, Sang Jik (Department of Electronics Engineering, Gachon University)
  • 이동운 (가천대학교 전자공학과) ;
  • 조의식 (가천대학교 전자공학과) ;
  • 전용민 (가천대학교 의공학과) ;
  • 권상직 (가천대학교 전자공학과)
  • Received : 2022.09.15
  • Accepted : 2022.09.20
  • Published : 2022.09.30
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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.

Keywords

Acknowledgement

본 성과는 2022년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원(KIAT)의 지원을 받아 수행된 연구임(No. P001245, 2022년 산업혁신인재성장지원사업). 본 성과는 또한 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2022R1A2C1003076).

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