High luminous efficiency blue organic light-emitting devices using high triplet excited energy materials

We succeeded to fabricate highly efficient blue organic light-emitting devices (OLEDs) by using a phosphorescent emitter, iridium(M) bis[(4,6-di-fluorophenyl)-pyridinate-N C-2']picolinate, and high triplet energy materials as the host and the carrier transport materials. A high power efficiency of 391m/W and external quantum efficiency of 21% were obtained at 100 cd/m(2).