72.1: <i>Invited Paper</i> : High Performance White OLEDs for Next Generation Solid State Lightings

Abstract

Abstract Two‐unit fluorescent/phosphorescent OLED system with a light outcoupling substrate gives high efficacy of over 55 lm/W and quite long half decay lifetime of over 150,000 h at 1,000 cd/m 2 . White OLED lighting panels of 8 cm × 8 cm for high luminance operation were fabricated and quite stable emission at 3,000 cd/m 2 was confirmed. All phosphorescent white OLEDs on the light outcoupling substrate show higher efficacy of about 70 lm/W and with a fairly good half decay lifetime of over 30,000 h. With a further voltage reduction and a high index spherical extractor, about 120 lm/Wat 1,000 cd/m 2 has been achieved.