Compound for organic optoelectronic element, composition for organic optoelectronic element, organic optoelectronic element, and display device

A composition for an organic optoelectronic device, comprising:

• a first compound, and a second compound,
• wherein:
• the first compound is represented by Chemical Formula 1;
• and
• the second compound is represented by Chemical Formula 2:
• in Chemical Formula 1,
• L1 to L3 are each independently a single bond, or a substituted or unsubstituted C6 to C30 arylene group,
• Ar1 and Ar2 are each independently a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• R1 to R10 are each independently hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, or a substituted or unsubstituted C6 to C20 aryl group, and
• in Chemical Formula 2,
• X1 is O, S, NRa, CRbRc, or SiRdRe,
• Ra, Rb, Rc, Rd, Re, and R11 to R14 are each independently hydrogen, deuterium, a substituted or unsubstituted amine group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• A is any one selected from the rings of Group II and Group III,
• wherein, in Group II and Group III,
• * is a linking point,
• X2 is O, S, NRf, CRgRh, or SiRiRj,
• Rf, Rg, Rh, Ri, Rj, R15, R16, and R19 to R21 are each independently hydrogen, deuterium, a substituted or unsubstituted amine group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• at least one of R11 to R14, R15, R16, and R19 to R21 is a group represented by Chemical Formula a,
• wherein, in Chemical Formula a,
• L4 to L6 are each independently a single bond, or a substituted or unsubstituted C6 to C30 arylene group,
• Ar3 and Ar4 are each independently a substituted or unsubstituted amine group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• * is a linking point.