Patent ID: 8021763
Filing Date: 2011-09-20
Classification: H01L,Y10S,Y10T

Abstract:
1. A device comprising: an anode; a cathode; an interlayer comprising a metal oxide disposed between the anode and the cathode; a first organic phosphorescent unit disposed between and electrically connected to the anode and the interlayer; and a second organic phosphorescent unit disposed between and electrically connected to the interlayer and the cathode; wherein each of the first and second phosphorescent units further comprises an organic emissive layer, the organic emissive layer comprising an organic host material and a first organic dopant material and a second organic dopant material, wherein the first organic dopant material has a LUMO of at least 0.3 eV lower than the LUMO of the organic host material; wherein each of the first and second organic phosphorescent units further comprises an exciton blocking layer; and wherein the device emits white light with a CIE in the range of (0.33±0.20, 0.33±0.20) and a CRI of at least 60.