Patent ID: 8133597

Claim:
An organic luminescent device having at least a light emission layer placed between an anode and a cathode, wherein the light emission layer contains an emission host and an emission dopant, wherein the emission dopant is a metal complex having a partial structure represented by Formula (2), and a mixing ratio of the emission dopant to the emission host is 0.1 to 30 weight % wherein, Z 2 is a group of atoms necessary for forming an aromatic heterocyclic ring together with a N atom and X 22 , X 22 is a carbon atom or a nitrogen atom, the formed aromatic heterocyclic ring is selected from the group consisting of pyrazole, oxazole, thiazole, tetrazole, pyridazine, pyrazine and triazine, and M 2 is a metal element of Group VIII of the periodic table.