Recent advances in phosphorescent OLEDs for small‐ and large‐area‐display sizes

— State-of-the-art phosphorescent organic light-emitting diode (PHOLED™) lifetime and efficiency performances for a range of emission colors are reported. Lifetimes in excess of 100,000 hours were demonstrated at display luminance levels for yellow-green and NTSC deep-red emission. In addition, external quantum efficiencies close to the theoretical maximum are demonstrated for long-lived PHOLEDs.