| abstract |
Provided is a compound of Chemical Formula 1 or 2: n nwherein: X 1 to X 3 are N or CH, with the proviso that at least one of X 1 to X 3 is N; Y is O or S; L 1 and L 2 are each independently a single bond or a substituted or unsubstituted C 6-60 arylene; and Ar is a substituted or unsubstituted C 1-60 alkyl, a substituted or unsubstituted C 1-60 haloalkyl, a substituted or unsubstituted C 3-60 cycloalkyl, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one to three heteroatoms selected from the group consisting of N, O, and S, and an organic light emitting device including the same. |