An organic light emitting device (10, 11), comprising: a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise a hetero-cyclic compound represented by the following Chemical Formula 2 or 3: in Chemical Formulae 2 and 3, R 1 to R 3 are the same as or different from each other, and are each independently selected from the group consisting of a substituted or unsubstituted straight-chained or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted arylphosphine group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; and a substituted or unsubstituted monocyclic or polycyclic hetero-cyclic group having 2 to 30 carbon atoms, wherein (i) the organic material layer comprises a light emitting layer, and the light emitting layer comprises the hetero-cyclic compound, or (ii) the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 1-A: in Chemical Formula 1-A, n1 is 2, Ar3 is a divalent pyrene group, L1 is a direct bond, Ar4 and Ar5 are the same as or different from each other, and are each independently an aryl group which is unsubstituted or substituted with a silyl group which is substituted with an alkyl group, and wherein the two structures in the parenthesis are the same as or different from each other, or (iii) the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 2-A: in Chemical Formula 2-A, Ar11 and Ar12 are a 1-naphthyl group, and G1 to G8 are hydrogen. a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise a hetero-cyclic compound represented by the following Chemical Formula 2 or 3: in Chemical Formulae 2 and 3, R 1 to R 3 are the same as or different from each other, and are each independently selected from the group consisting of a substituted or unsubstituted straight-chained or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted arylphosphine group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; and a substituted or unsubstituted monocyclic or polycyclic hetero-cyclic group having 2 to 30 carbon atoms, (i) the organic material layer comprises a light emitting layer, and the light emitting layer comprises the hetero-cyclic compound, or (ii) the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 1-A: in Chemical Formula 1-A, n1 is 2, Ar3 is a divalent pyrene group, L1 is a direct bond, Ar4 and Ar5 are the same as or different from each other, and are each independently an aryl group which is unsubstituted or substituted with a silyl group which is substituted with an alkyl group, and wherein the two structures in the parenthesis are the same as or different from each other, or n1 is 2, Ar3 is a divalent pyrene group, L1 is a direct bond, Ar4 and Ar5 are the same as or different from each other, and are each independently an aryl group which is unsubstituted or substituted with a silyl group which is substituted with an alkyl group, and wherein the two structures in the parenthesis are the same as or different from each other, or (iii) the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 2-A: in Chemical Formula 2-A, Ar11 and Ar12 are a 1-naphthyl group, and G1 to G8 are hydrogen. Ar11 and Ar12 are a 1-naphthyl group, and G1 to G8 are hydrogen.