Patent ID: 7618717

Claim:
An organic electroluminescent device comprising: a pair of electrodes; and at least one organic compound layer between the pair of electrodes, the at least one organic compound layer comprising a light emitting layer, wherein the light emitting layer comprises: a host material comprising a five-coordinate metal complex; and a phosphorescent material comprising an Ir complex having a partial structure represented by formula 24: wherein Z 201 represents an atomic group for forming a phenyl group; Z 401 represents an atomic group for forming an aryl ring or a heteroaryl ring to be fused with the pyridine ring; L 204 represents a ligand; n 204 =0, and m 204 =3, and wherein the five-coordinate metal complex is a compound represented by formula (101): wherein M represents Al, Ga, or In; R 3 to R 8 each independently represents a hydrogen atom, an alkyl group, or an alkoxy group; A represents —O—Ar or a halogen atom; and Ar represents an optionally substituted aryl group.