| 主权项 |
1. An organic light-emitting element comprising:
an anode; a cathode; and an organic compound layer placed between the anode and the cathode, wherein the organic compound layer includes an iridium complex represented by the following general formula [1] and a metal complex represented by the following general formula [9]:
Ir(L1)(L2)(L3) [1] in the formula [1], a partial structure IrL1 comprises a partial structure represented by the following general formula [2]: in the formula [2]: a ring A1 represents an aromatic ring or an aromatic heterocycle, and the aromatic ring and aromatic heterocycle each represented by the ring A1 may each further have a substituent selected from an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, an aryloxy group, a halogen atom, and a cyano group; and R1 to R8 each represent a hydrogen atom, an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, an aryloxy group, a halogen atom, or a cyano group, and may be identical to or different from one another, and when any one of substituents represented by the R1 to R8 is an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, or an aryloxy group, the substituent may further have any substituent selected from an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, an aryloxy group, a halogen atom, and a cyano group; in the formula [1], a partial structure IrL2 comprises a partial structure represented by the following general formula [3]: in the formula [3]: a ring A2 represents an aromatic ring or an aromatic heterocycle, and the aromatic ring and aromatic heterocycle each represented by the ring A2 may each further have any substituent selected from an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, an aryloxy group, a halogen atom, and a cyano group; and a ring B represents a nitrogen-containing aromatic heterocycle, and the nitrogen-containing aromatic heterocycle represented by the ring B may further have any substituent selected from an alkyl group having 1 or more and 4 or less carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, a substituted amino group, an alkoxy group, an aryloxy group, a halogen atom, and a cyano group; L1 and L2 represent ligands that are different from each other and are not identical to each other; in the formula [1], L3 represents a monovalent bidentate ligand having an atom that forms a covalent bond with iridium and is selected from N, O, S, and P, and an atom that forms a coordinate bond with iridium and is selected from N, O, S, and P, and the atom that forms the covalent bond with iridium and the atom that forms the coordinate bond with iridium may be identical to or different from each other;
MLL′ [9] in the formula [9], M represents a divalent metal atom selected from Zn, Be, Mg, Ca, Co, and Ni, L and L′ each represent a bidentate ligand, and L and L′ may be identical to or different from each other, and ML and ML′ each represent any one of partial structures represented by the following general formulae [10] to [15]: in the formulae [10] to [15], R30 to R57 each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, an alkoxy group, a substituted amino group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted heteroaromatic group; in the formulae [12] to [15]: a ring B comprises any one of cyclic structures represented by the following general formulae [16] to [18]; and *1 represents a bonding position with an oxygen atom and *2 represents a bonding position with a carbon atom in a five-membered heterocyclic skeleton: in the formulae [16] to [18], R60 to R73 each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, an alkoxy group, a substituted amino group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted heteroaromatic group. |
