Patent ID: 8436345

Claim:
An organic electroluminescence device comprising: a pair of anode and cathode opposed to each other; a plurality of organic semiconductor layers layered or disposed between the anode and the cathode, the organic semiconductor layers including an organic light-emitting layer; and an n-type-dopant-containing electron transport layer disposed between the cathode and the organic light-emitting layer, the n-type-dopant-containing electron transport layer including an organic compound capable of transporting electrons as a first component which is mixed with an n-type dopant of an electron donor of metallic atom or ion thereof as a second component, the organic electroluminescence device further comprising an n-type-dopant blocking layer having an interface contacting with the n-type-dopant-containing electron transport layer to block the n-type dopant, wherein the n-type-dopant blocking layer comprises any one of Iridium compounds, Osmium compounds, or Platinum compounds, wherein a volume ratio concentration of the heavy atom compound in the n-type-dopant blocking layer is equal to or higher than a volume ratio concentration of the n-type dopant in the n-type-dopant-containing electron transport layer.