An organic electroluminescent device comprising a substrate having stacked thereon an anode, organic layers, and a cathode, wherein at least one sing layer of the organic layers selected from the group consisting of a light-emitting layer containing a luminescent dopant, an electron-blocking layer, and a hole-blocking layer comprises (i) a compound represented by the following general formula (1) and (ii) a compound represented by the following general formula (2):
- wherein each R independently represents hydrogen, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, an aromatic heterocyclic group other than a substituted or unsubstituted carbazolyl group having 3 to 17 carbon atoms, a substituted or unsubstituted linked aromatic group formed by linking 2 to 6 of aromatic rings of the aromatic hydrocarbon group or the aromatic heterocyclic group, an alkyl group having 1 to 12 carbon atoms, a diarylamino group having 12 to 44 carbon atoms, a cyano group, a nitro group, or a fluoro group, with the proviso that the alkyl group may be linear, branched, or cyclic;
- each R′ independently represents hydrogen, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 17 carbon atoms, a substituted or unsubstituted linked aromatic group formed by linking 2 to 6 of aromatic rings of the aromatic hydrocarbon group or the aromatic heterocyclic group, an alkyl group having 1 to 12 carbon atoms, a diarylamino group having 12 to 44 carbon atoms, a cyano group, a nitro group, or a fluoro group, with the proviso that the alkyl group may be linear, branched, or cyclic;
- m represents a repeating number and is an integer of 1 to 6;
- and
- X1 to X3 each independently represent N, C—R′ or C—,
- wherein ring A is a divalent carborane group of C2B10H10 represented by formula (a1) or formula (b1), with the proviso that when a plurality of rings A are present in a molecule, the plurality of rings A may be the same or different from each other;
- q is a substitution number and is an integer of 1 to 4;
- n is a repeating number and is an integer of 0 to 2;
- L1 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 30 carbon atoms, or a linked aromatic group formed by linking 2 to 6 of the substituted or unsubstituted aromatic rings;
- L2 represents a single bond, a substituted or unsubstituted (q+1)-valent aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 30 carbon atoms, or a substituted or unsubstituted linked aromatic group formed by linking 2 to 6 of aromatic groups of the aromatic hydrocarbon group or the aromatic heterocyclic group, with the proviso that when q=1 and n=1, L2 represents a single bond, an aromatic heterocyclic group, or a linked aromatic group comprising at least one aromatic heterocyclic group;
- and
- L3 independently represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 30 carbon atoms, or a substituted or unsubstituted linked aromatic group formed by linking 2 to 6 of aromatic groups of the aromatic hydrocarbon group or the aromatic heterocyclic group.