Organic light-emitting device and display apparatus

An organic light-emitting device comprising:

• a pair of electrodes;
• and
• an organic compound layer disposed between the pair of electrodes,
• wherein the organic compound layer includes an iridium complex represented by the following general formula [6] and a hydrocarbon compound represented by the following general formula [10]:
• in the formula [6]:
• R31 to R38 each represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a trifluoromethyl group, a cyano group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted heteroaromatic group;
• k represents an integer of 1 to 3 and 1 represents an integer of 0 to 2, provided that k+1 equals 3;
• a ring A represents a cyclic structure selected from a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a 9,9-spirobifluorene ring, and a chrysene ring, and is covalently bonded to a benzo[f]isoquinoline skeleton and an Ir metal, and the ring A may further have a substituent;
• X represents a bidentate ligand;
• and
• a partial structure IrX1 comprises any one of structures represented by the following general formulae [7] to [9]:
• in the formulae [7] to [9]:
• R39 to R53 each represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a trifluoromethyl group, a cyano group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted heteroaromatic group;
• Ar5—(Ar6)r—(Ar7)s—Ar8 [10]
• in the formula [10]:
• r and s each represent 0 or 1, and r+s is equal to or more than 1;
• Ar5 represents any one of substituents represented in the following substituent group α′;
• Ar6 and Ar7 each represent any one of substituents represented in the following substituent group β′, and Ar6 and Ar7 may be identical to or different from each other;
• and
• Ar8 represents any one of substituents represented in the following substituent group γ′
• [Substituent group α′]
• [Substituent group β′]
• [Substituent group γ′]
• provided that the hydrocarbon represented by general formula [10] is not