콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Outcoupling efficiency enhancement of a bottom-emitting OLED with a visible parylene film
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-08
- 저자명 Akpeko Gasonoo, 이예슬, 윤지현, 성백상, 최윤석, 이종희,이재현
- 학술지명 OPTICS EXPRESS
- 발행처명 OPTICAL SOC AMER
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
논문 초록 (Abstract)
We have investigated an effective and a single-step chemical vapor deposition (CVD) method to achieve conformal visible poly-dichloro-para-xylylene (parylene C) film for light extraction enhancement in bottom-emitting organic light-emitting diodes (OLEDs) at room temperature. We report that sublimed parylene dimers pyrolyzed between 400 degrees C and 500 degrees C resulted in visible parylene films with tunable transmittance and haze, exhibiting light scattering properties due to the formation of uniformly distributed dimer crystals. We achieved a novel conformal visible parylene film with total transmittance and high haze of 79.5% and 93.6%, respectively. It is observed that the outcoupling efficiency of the OLEDs employing the visible parylene film is enhanced up to 45.8%. Additionally, the OLED with the visible parylene light extraction film shows limited angle-dependency of emission spectrum over viewing angles. The single-step room temperature fabrication process of this conformal outcoupling film paves the way to achieving commercial high-performance OLEDs. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
