Organic light-emitting device, method for manufacturing same, and composition for organic material layer of organic light-emitting device

An organic light emitting device comprising:

• a first electrode;
• a second 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 heterocyclic compound represented by the following Chemical Formula 1, and a heterocyclic compound represented by any one of the following Chemical Formulas 2-7 to 2-9:
• in Chemical Formulae 1 and 2-7 to 2-9,
• N-Het is a pyridine group unsubstituted or substituted with one or more substituents selected from the group consisting of a C1 to C20 alkyl group, a C6 to C40 aryl group, a C2 to C40 heteroaryl group comprising S or O as a heteroatom, —P(═)ORR′ and —SiRR′R″ or a substituent linking two or more of the substituents;
• a pyrimidine group unsubstituted or substituted with one or more substituents selected from the group consisting of a C1 to C20 alkyl group, a C6 to C40 aryl group, a C2 to C40 heteroaryl group comprising S or O as a heteroatom, —P(═)ORR′ and —SiRR′R″ or a substituent linking two or more of the substituents;
• or a triazine group unsubstituted or substituted with one or more substituents selected from the group consisting of a C1 to C20 alkyl group, a C6 to C40 aryl group, a C2 to C40 heteroaryl group comprising S or O as a heteroatom, —P(═)ORR′ and —SiRR′R″ or a substituent linking two or more of the substituents,
• L and L1 are a direct bond;
• a C6 to C60 monocyclic arylene group;
• or a C10 to C60 polycyclic arylene group,
• Ar1 is a substituted or unsubstituted C10 to C60 aryl group, or represented by the following Chemical Formula 1-A;
• X1 is O;
• S;
• or NR22;
• R1 to R4 are the same as or different from each other, and each independently hydrogen;
• a substituted or unsubstituted C1 to C40 alkyl group;
• a substituted or unsubstituted C6 to C40 aryl group;
• or a substituted or unsubstituted C2 to C40 heteroaryl group, or two or more groups adjacent to each other bond to each other to form a substituted or unsubstituted C6 to C40 aromatic hydrocarbon ring,
• A3 is O;
• S;
• or NRg;
• R50 and R51 are the same as or different from each other, and each independently hydrogen;
• a phenyl group;
• or a triphenylenyl group, and at least one thereof is a phenyl group or a triphenylenyl group,
• Rg is a substituted or unsubstituted C6 to C60 aryl group,
• R11, R14, R52 and R53 are hydrogen,
• r is an integer of 0 to 3;
• q is an integer of 0 to 4,
• R5 to R7 are the same as or different from each other, and each independently selected from the group consisting of hydrogen;
• and deuterium;
• A1 and A2 are the same as or different from each other, and each independently O;
• S;
• NRa;
• or CRbRc;
• at least one of A1 and A2 is O;
• S;
• or CRbRc;
• R22, R, R′, and R″ are the same as or different from each other, and each independently a C6 to C40 aryl group,
• Ra is a phenyl group unsubstituted or substituted with one or more substituents selected form the group consisting of a phenyl group, a biphenyl group and a triphenylsilyl group;
• a biphenyl group;
• a naphthyl group;
• a terphenyl group;
• a triphenylenyl group;
• a dimethylfluorenyl group;
• a diphenylfluorenyl group;
• a dibenzofuran group;
• a dibenzothiophene group;
• or a carbazole group unsubstituted or substituted with a phenyl group,
• Rb and Rc are the same as or different from each other, and each independently C1 to C20 alkyl group,
• b, c and d are an integer of 0 to 3;
• and
• a and e are an integer of 0 to 5,
• “substituted or unsubstituted” means being substituted with one or more substituents selected from the group consisting of C1 to C60 linear or branched alkyl;
• 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 illustrated above, or being unsubstituted.