상세정보
학술지
Design and Fabrication of Two-stack Tandem-type All-phosphorescent White Organic Lighte-mitting Diode for Achieving High Color Rendering Index and Luminous Efficacy
- 발행일
- 201610
- 출처
- Optics Express, v.24 no.21, pp.24161-24168
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 협약과제
- 16PB1800, AMOLED TV용 soluble TFT 및 화소 형성 소재/공정 기술 개발, 이종희
- 초록
- White organic light-emitting diodes (WOLEDs) are regarded as the general lighting source. Although color rendering index (CRI) and luminous efficacy are usually in trade-off relation, we will discuss about the optimization of both characteristics, particularly focusing on the spectrum of a blue emitter. The emission at a shorter wavelength is substantially important for achieving very high CRI (> 90). The luminous efficacy of a phosphorescent blue emitter is low as its color falls in the deeper blue range; however, that does not show any significant influence on the WOLEDs. WOLEDs with different blue dopants are compared to confirm the calculation of the CRI and luminous efficacy, and the optimized WOLEDs exhibit luminous efficacy of 38.3 lm/W and CRI of 90.9.
- KSP 제안 키워드
- Blue emitter, Design and fabrication, Organic light-emitting diodes(OLEDS), Trade-off, White organic light-emitting diodes, high CRI, high color rendering index, light-emitting diode(LED), lighting source, luminous efficacy