Composition for organic photoelectronic element, organic photoelectronic element, and display apparatus

A composition for an organic optoelectronic device, comprising

• at least one first compound represented by Chemical Formula 1;
• and
• at least one second compound represented by Chemical Formula 2:
• wherein, in Chemical Formula 1,
• X1 to X12 are independently N, C, or CRa,
• at least one of X1 to X6 is N,
• at least one of X7 to X12 is N,
• Ra is independently, hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkenyl group, a substituted or unsubstituted C1 to C30 alkynyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C6 to C30 arylthio group, a substituted or unsubstituted C2 to C30 heteroaryl group, a hydroxy group, a thiol group, or a combination thereof,
• Ra is independently present or adjacent Ras are linked to each other to provide a ring, and
• L1 is deuterium, a C1 to C40 silyl group, a C1 to C30 alkyl group, a C3 to C30 cycloalkyl group, a C2 to C30 heterocycloalkyl group, or a C6 to C30 arylene group substituted or unsubstituted with a C6 to C30 aryl group;
• wherein, in Chemical Formula 2,
• L2 to L5 and Y1 are independently a single bond, or a substituted or unsubstituted C6 to C30 arylene group,
• Ar1 is a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted C6 to C30 arylamine group, or a combination thereof,
• R1 to R4 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted nitrile group, a substituted or unsubstituted isonitrile group, a hydroxy group, a thiol group, or a combination thereof,
• R1 to R4 is independently present or adjacent groups are linked to each other to provide a ring,
• at least one of R1 to R4 and Ar1 is a substituted or unsubstituted triphenylene group, or a substituted or unsubstituted carbazolyl group,
• one of R1 and R2 and one of R3 and R4 are not simultaneously a substituted or unsubstituted carbazolyl group, and
• when one of R1 to R4 is a substituted carbazolyl group, the carbazolyl group is not substituted with a carbazolyl group,
• wherein “substituted” of Chemical Formulae 1 and 2 refers to that at least one hydrogen is replaced by deuterium, a halogen, a hydroxy group, an amino group, a C1 to C30 amine group, a C6 to C30 arylamine group, a nitro group, a C1 to C40 silyl group, a C1 to C30 alkyl group, a C3 to C30 cycloalkyl group, a C2 to C30 heterocycloalkyl group, a C6 to C30 aryl group, a C2 to C30 heterocyclic group, a C1 to C20 alkoxy group, a C1 to C10 trifluoroalkyl group, or a cyano group.