Heterocyclic compound, organic light emitting device comprising the same, method for manufacturing the same and composition for organic material layer of organic light emitting device

A heterocyclic compound represented by the following Chemical Formula 1:

• wherein, in Chemical Formula 1,
• R1 to R6 and Re are the same as or different from each other, and each independently selected from the group consisting of hydrogen;
• and deuterium;
• L1 to L3 are the same as or different from each other, and each independently a direct bond;
• or a substituted or unsubstituted C6 to C60 arylene group;
• Ar1 and Ar2 are the same as or different from each other, and each independently selected from the group consisting of a substituted or unsubstituted C6 to C60 aryl group;
• and a substituted or unsubstituted C2 to C60 heteroaryl group;
• Ar3 is a phenyl group unsubstituted or substituted with a t-butyl group or CF3;
• a biphenyl group unsubstituted or substituted with a phenyl group;
• a terphenyl group;
• a naphthyl group;
• a dimethylfluorenyl group;
• a diphenylfluorenyl group;
• a spirobifluorenyl group;
• a dibenzofuran group;
• or a dibenzothiophene group;
• “substituted or unsubstituted” means being substituted with one or more substituents selected from the group consisting of deuterium;
• a halogen group;
• a cyano group;
• C1 to C60 linear or branched alkyl;
• C2 to C60 linear or branched alkenyl;
• C2 to C60 linear or branched alkynyl;
• C3 to C60 monocyclic or polycyclic cycloalkyl;
• C2 to C60 monocyclic or polycyclic heterocycloalkyl;
• C6 to C60 monocyclic or polycyclic aryl;
• C2 to C60 monocyclic or polycyclic heteroaryl;
• —SiRR′R″;
• and —P(═O)RR′;
• or being unsubstituted, or being substituted with a substituent linking two or more substituents selected from among the substituents described above or being unsubstituted, and
• R, R′ and R″ are the same as or different from each other, and each independently a substituted or unsubstituted C1 to C60 alkyl group;
• a substituted or unsubstituted C6 to C60 aryl group;
• or a substituted or unsubstituted C2 to C60 heteroaryl group;
• q is an integer of 1 to 4;
• a1 is an integer of 0 to 2;
• p, a and m are an integer of 0 to 4;
• and
• when q, p, a and m are an integer of 2 to 4 or a1 is an integer of 2, substituents in the parentheses are the same as or different from each other.