Advanced Materials, Vol.28, No.28, 5963-5963, 2016
Novel Emitting System Based on a Multifunctional Bipolar Phosphor: An Effective Approach for Highly Efficient Warm-White Light-Emitting Devices with High Color-Rendering Index at High Luminance
A three-color warm-white organic light-emitting diode employing an efficient phosphor-phosphor type host-guest emitting system achieves efficiencies of 27.3% for external quantum efficiency and 74.5 lm W-1 for power efficiency at a luminance of 1000 cd m(-2), which maintained the high levels of 24.3% and 45.8 lm W-1 at 10 000 cd m(-2), with a stable color-rendering index of 86 87.