Organic light-emitting device

An organic light-emitting device comprising:

• a first electrode;
• a second electrode;
• and
• an organic layer between the first electrode and the second electrode and comprises an electron transport layer,
• wherein the electron transport layer comprises a compound represented by Formula 1 below:
• wherein, in Formula 1,
• R is a hydrogen atom, a deuterium atom, a halogen atom, a halogen atom, a nitro group, a cyano group, a substituted or unsubstituted C1-C60 alkyl 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;
• Ar1 and Ar2 are each independently selected from 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 one of Ar1 and Ar2 is a functional group including moieties that attract electrons;
• X is selected from a direct bond, a substituted or unsubstituted C6-C60 arylene group, a substituted or unsubstituted C2-C60 heteroarylene group, a substituted or unsubstituted C6-C60 condensed polycyclic group, or a divalent linking group with at least two of the arylene group, the heteroarylene group, and the condensed polycyclic group linked together;
• and
• n is an integer of 0 to 10.