Novel heterocyclic compound and organic light-emitting device including the same

An organic light-emitting device comprising:

• a first electrode;
• a second electrode;
• and
• an organic layer between the first electrode and the second electrode, wherein the organic layer comprises a heterocyclic compound, and wherein the heterocyclic compound is represented by Formula 1 below:
• wherein, in Formula 1,
• R is a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C2-C60 alkenyl group, a substituted or unsubstituted C2-C60 alkynyl group, a substituted or unsubstituted C3-C60 cycloalkyl group, a substituted or unsubstituted C3-C60 cycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C2-C60 heteroaryl group, or a substituted or unsubstituted C6-C60 condensed polycyclic group;
• X is a divalent linking group that is a substituted or unsubstituted C6-C60 arylene group, or a substituted or unsubstituted C6-C60 condensed polycyclic group;
• and
• Ar1 or Ar2 is independently a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C2-C60 heteroaryl group, or a substituted or unsubstituted C6-C60 condensed polycyclic group,
• wherein at least one of Ar1 and Ar2 is a C6-C60 aryl group that is substituted with an electron-attracting moiety, and n is an integer from 0 to 10.