Over 130 lm/W all-phosphorescent white OLEDs for next-generation lighting

Abstract

OLED lighting is the promising technology that makes the future lighting more valuable one. For OLED lighting to penetrate into market, considerable challenges remain. From ecology perspective, it is critical to improve the luminous efficacy. White OLED device with the world highest record of 139 lm/W (CCT = 2857 K) at 1,000 cd/m2 was successfully achieved by introducing proprietary blue phosphorescent emitter to raise the internal quantum efficiency and improved internal extraction structure to enhance the light out-coupling efficiency.