Patent ID: 8604466

Claim:
An organic electroluminescence device, comprising: two electrode layers; optionally, at least one intermediate conductive layer; a light emitting layer; and an electron injection region, wherein the light emitting layer is between at least one selected from the group consisting of the two electrode layers, the electrode layer and the at least one optional intermediate conductive layer and two optional intermediate conductive layers, wherein the electron injection region comprises at least one layer between at least one selected from the group consisting of the light emitting layer and a cathode layer and the light emitting layer and the at least one optional intermediate conductive layer, wherein at least one layer in the electron injection region comprises at least one selected from the group consisting of an oxide of a transition metal belonging to any one of Groups 5 to 8 of the periodic table, a nitrogen-comprising heterocyclic compound, and a chalcogenide, and further comprises a compound represented by the following general formula (1): M x AO y (1) wherein M is Li, Na, K, Rb, or Cs; A is Zr, V, Nb, Ta, Si, or Ge; x is an integer of 1 or 2; and y is an integer of 1 to 4.