Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

Improvement of Out-coupling Efficiency of Organic Light Emitting Device by Ion-beam Plasma-treated Plastic Substrate

이온빔 플라즈마 처리된 플라스틱 기판에 의한 OLED의 광추출 효율 향상

  • Kim, Hyeun Woo (Dept. of Display and Semiconductor Engineering, Sunmoon University) ;
  • Song, Tae Min (Dept. of Display and Semiconductor Engineering, Sunmoon University) ;
  • Lee, Hyeong Jun (Dept. of Display and Semiconductor Engineering, Sunmoon University) ;
  • Jeon, Yongmin (Dept. of Biomedical Engineering, Gachon University) ;
  • Kwon, Jeong Hyun (Dept. of Display and Semiconductor Engineering, Sunmoon University)
  • 김현우 (선문대학교 디스플레이반도체공학과) ;
  • 송태민 (선문대학교 디스플레이반도체공학과) ;
  • 이형준 (선문대학교 디스플레이반도체공학과) ;
  • 전용민 (가천대학교 의공학과) ;
  • 권정현 (선문대학교 디스플레이반도체공학과)
  • Received : 2022.04.04
  • Accepted : 2022.04.29
  • Published : 2022.06.30
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Abstract

A functional polyethylene terephthalate substrate to increase light extraction efficiency of organic light-emitting diodes is studied. We formed nano-structured PET surfaces by controlling the power, gas, and exposure time of the linear ion-beam. The haze of the polyethylene terephthalate can be controlled from 0.2% to 76.0% by changing the peak-to-valley roughness of nano structure by adjusting the exposure cycle. The treated polyethylene terephthalate shows average haze of 76.0%, average total transmittance of 86.6%. The functional PET increases the current efficiency of organic light-emitting diodes by 47% compared to that of organic light-emitting diode on bare polyethylene terephthalate. In addition to polyethylene terephthalate with light extraction performance, by conducting additional research on the development of functional PET with anti-reflection and barrier performance, it will be possible to develop flexible substrates suitable for organic light-emitting diodes lighting and transparent flexible displays.

Keywords

Acknowledgement

본 논문은 2021년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신사업 및 2022년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원(NRF-2022R1F1A1075914)으로 수행된 결과입니다(2021RIS-004). 또한, 이 연구는 2022년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임(’20018379).

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