High Luminous Efficiency Blue Organic Light-Emitting Devices Using High Triplet Excited Energy Materials

Abstract

We succeeded to fabricate highly efficient blue organic light-emitting devices (OLEDs) by using a phosphorescent emitter, iridium(III) bis[(4,6-di-fluorophenyl)-pyridinate-N,C2']picolinate, and high triplet energy materials as the host and the carrier transport materials. A high power efficiency of 39 lm/W and external quantum efficiency of 21% were obtained at 100 cd/m2.