Patent ID: 8723171
Filing Date: 2014-05-13
Classification: C09B,H01L

Abstract:
1. An organic electroluminescence device, comprising opposite anode and cathode, and a hole-transporting region, an emitting layer and an electron-transporting region in sequential order from the anode between the anode and the cathode, wherein the emitting layer comprises a red emitting portion, a green emitting portion, and a blue emitting portion; the blue emitting portion comprises a host BH and a fluorescent dopant FBD; the triplet energy E the green emitting portion comprises a host GH and a phosphorescent dopant PGD; the electron-transporting region comprises a common electron-transporting layer adjacent to the red emitting portion, the green emitting portion and the blue emitting portion; the common electron-transporting layer comprises a material of formula (20); and the material constituting the common electron-transporting layer has a triplet energy E wherein HAr is a substituted or unsubstituted nitrogen-containing heterocycle having 3 to 40 carbon atoms; L Ar Ar