45.2: Invited Paper: Extremely High Performance White OLEDs for Lighting

High performance all phosphorescent white devices with single unit and two-unit structures on a light outcoupling substrate were investigated. The single unit device showed high efficacy of 87 lm/W with a half decay lifetime of 10,000 h at the luminance of 1,000 cd/m2. The two-unit device realized also high efficacy of 83 lm/W with much improved lifetime of over 100,000 h.