Patent ID: 8129899

Claim:
An organic light-emitting device comprising: a pair of electrodes composed of an anode and a cathode, either the anode or the cathode being a transparent or semi-transparent electrode, and an organic compound layer interposed between the pair of electrodes, wherein the organic compound layer contains an azafluorene derivative represented by following general formula (III): wherein m represents an integer of 2 to 4, a represents an integer of 0 to 4, and b represents an integer of 0 to 2; wherein X 1 and X 2 each independently represent a substituent selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted heterocyclic group, and a substituted amino group; wherein Ar represents an m-valent aromatic hydrocarbon group which may be substituted; and wherein R 1 and R 2 each independently represent an alkyl group which is unsubstituted or may be substituted by a fluorine atom.