상세정보
학술지
White Organic Light Emitting Diodes with a Random Scattering Layer for an Internal Light Extraction
- 발행일
- 201601
- 출처
- ECS Journal of Solid State Science and Technology, v.5 no.1, pp.R3126-R3130
- ISSN
- 2162-8769
- 출판사
- Electrochemical Society (ECS)
- 초록
- A random scattering layer (RSL) containing random nano-structures as the internal light extraction functional layer was introduced into white organic light-emitting diodes (OLEDs) to improve the light extraction efficiency and preserve the white color quality. White OLEDs on the RSL with varying heights of nano-structures were successfully fabricated, and the effects of haze on the characteristics of the OLED device were investigated. The haze and light extraction efficiency were mutually proportional. The RSL equipped white OLEDs exhibited an external quantum efficiency improvement of 41.5% with a low angular spectrum change. The results from our RSL are interpreted as an optical functionality which reduces the internal wave guiding mode due to the scattering effect leading to enhanced device efficiency and stabilized emission spectra, respectively.
- KSP 제안 키워드
- Angular spectrum, Device efficiency, External Quantum Efficiency, Functional layer, Nano-structures, Organic light-emitting diodes(OLEDS), Scattering effect, Scattering layer, White organic light-emitting diodes, color quality, efficiency improvement