상세정보
학술지
Optical and Structural Approaches for Improved Luminance Distribution and Enhanced Efficiency of Organic Light Emitting Diodes
- 발행일
- 201707
- 출처
- Journal of Luminescence, v.187, pp.433-440
- ISSN
- 0022-2313
- 출판사
- Elsevier
- 협약과제
- 16ZB1300, 초저가 플렉서블 Lighting Surface 기술 개발, 유병곤
- 초록
- We combined cavity based optical method and polymer based structural approach to achieve efficiency enhancement and widened luminance distribution of organic light emitting diodes. Cavity method was implemented by adjusting the thickness of the hole transport layer and using a ITO-Metal-ITO transparent electrode. Utilizing the lateral phase separation of immiscible polystyrene/ polyethylene glycol binary system, we have fabricated an aperiodic protruding structure. The application of the two methods yielded two fold efficiency enhancement and widened luminance distribution. To be specific the external quantum efficiency increased from 8.9% to 17.9%.
- KSP 제안 키워드
- Binary system, Cavity method, External Quantum Efficiency, Lateral phase separation, Optical method, Organic light-emitting diodes(OLEDS), Poly (ethylene glycol)(PEG), efficiency enhancement, enhanced efficiency, hole transport layer, light-emitting diode(LED)