Organic light emitting device

An organic light-emitting device comprising:

• a substrate;
• a first electrode;
• a second electrode disposed opposite to the first electrode;
• and an emission layer disposed between the first electrode and the second electrode and comprising a host and a dopant, the host comprising an anthracene-based compound represented by Formula 1 below:
• n in Formula 1 being 0 or 1;
• R1, R2, R4 and R5 are a substituted or unsubstituted C1-C60 alkyl group, and R3 and R6 are each independently selected from a 3- to 10-membered substituted or unsubstituted non-condensed ring group, and a substituted or unsubstituted condensed ring group in which at least two rings are fused to each other,
• if n is 0, R3 is a substituted or unsubstituted condensed ring group in which at least two rings are fused to each other, and if n is 1, at least one of R3 and R6 is a substituted or unsubstituted condensed ring group in which at least two rings are fused to each other;
• L1 are L2 are each independently selected from a substituted or unsubstituted C3-C10 cycloalkylene group, a substituted or unsubstituted C3-C10 cycloalkenylene group, a substituted or unsubstituted C3-C10 heterocycloalkylene group, a substituted or unsubstituted C3-C10 heterocycloalkenylene group, a substituted or unsubstituted C6-C60 arylene group, and a substituted or unsubstituted C2-C60 heteroarylene group;
• c and d are each independently an integer from 1 to 3;
• R11 and R12 are each independently selected from a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine, a hydrazone, a carboxylic group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, 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 C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C3-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthiol group, a substituted or unsubstituted C2-C60 heteroaryl group, —N(Q1)(Q2), and —Si(Q3)(Q4)(Q5), Q1 to Q5 being each independently selected from a hydrogen atom, a C1-C10 alkyl group, a C6-C20 aryl group, and a C2-C20 heteroaryl group;
• and
• a and b are each independently an integer from 1 to 4.