상세정보
학술지
Random Nanostructure Scattering Layer for Suppression of Microcavity Effect and Light Extraction in OLEDs
- 발행일
- 201406
- 출처
- Optics Letters, v.39 no.12, pp.3527-3530
- ISSN
- 0146-9592
- 출판사
- Optical Society of America(OSA),
- 협약과제
- 14PB1200, 에너지 절감을 위한 외광효율이 최대 100% 향상된 OLED용 광추출 기초 원천기술 개발, 이정익
- 초록
- In this study, we investigated the effect of a random nanostructure scattering layer (RSL) on the microcavity and light extraction in organic light emitting diodes (OLEDs). In the case of the conventional OLED, the optical properties change with the thickness of the hole transporting layer (HTL) because of the presence of a microcavity. However, OLEDs equipped with the an RSL showed similar values of external quantum efficiency and luminous efficacy regardless of the HTL thickness. These phenomena can be understood by the scattering effect because of the RSL, which suppresses the microcavity effect and extracts the light confined in the device. Moreover, OLEDs with the RSL led to reduced spectrum and color changes with the viewing angle. © 2014 Optical Society of America.
- KSP 제안 키워드
- Color changes, External Quantum Efficiency, Hole transporting layer, Microcavity effect, Organic light-emitting diodes(OLEDS), Properties change, Scattering effect, Scattering layer, light extraction, light-emitting diode(LED), luminous efficacy