Patent ID: 8728633

Claim:
An organic electroluminescent element comprising an anode and a cathode having therebetween a light emitting layer, wherein the light emitting layer comprises a guest compound having a substructure represented by a Formula (A) and a host compound represented by a Formula 3: wherein Ra represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group or a heterocyclic group; Rb and Rc each represent a hydrogen atom or a substituent selected from the group consisting of an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, an aromatic heterocycle group, a heterocycle group, an alkoxy group, a cycloalkoxyl group, an aryloxy group, an alkylthio group, a cycloalkylthio group, an arylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfamoyl group, an acyl group, an acyloxy group, a butylcarbonyloxy group, an octylcarbonyloxy group, an amide group, a carbamoyl group, a ureido group, a sulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an amino group, a halogen atom, a hydrofluorocarbon group, a cyano group, a nitro group, a hydroxyl group, a mercapto group and a silyl group, and one of these substituents which is further substituted with one of these substituents; A1 represents a benzene ring or a pyridine ring; and M represents Ir; wherein R 1 , R 2 , R 3 and R 4 each represent a phenyl group or a pyridyl group; R 6 and R 7 each represent a hydrogen atom; n1 to n4 each represent an integer of 0 to 4; n6 and n7 each represent an integer of 0 to 3; and RA and RB each represent an alkyl group, wherein n1 and n2 are not simultaneously 0 and n3 and n4 are not simultaneously 0.