Nitrogen-containing condensed cyclic compound and organic light emitting device using same

A compound represented by the following Chemical Formula 2 or 3:

• wherein in Chemical Formulae 2 and 3:
• Ar is represented by the following Chemical Formula B:
• wherein Y1, Y2 and Z1 to Z4 are the same as or different from each other, and each independently N or CRd,
• Rd is hydrogen;
• deuterium;
• a nitrile group;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted alkenyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted aryl group;
• a substituted or unsubstituted aromatic or aliphatic heterocyclic group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryloxy group;
• a substituted or unsubstituted alkylamine group;
• a substituted or unsubstituted arylamine group;
• a substituted or unsubstituted aralkylamine group;
• a substituted or unsubstituted alkylarylamine group;
• or a substituted or unsubstituted heteroarylamine group, or combine with an adjacent group to form a ring,
• L is a direct bond;
• or a substituted or unsubstituted arylene group;
• and
• R1 to R13 are the same as or different from each other, and each independently hydrogen;
• deuterium;
• a nitrile group;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted alkenyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted aryl group;
• a substituted or unsubstituted aromatic or aliphatic heterocyclic group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryloxy group;
• a substituted or unsubstituted alkylamine group;
• a substituted or unsubstituted arylamine group;
• a substituted or unsubstituted aralkylamine group;
• a substituted or unsubstituted alkylarylamine group;
• or a substituted or unsubstituted heteroarylamine group.