Composition for optoelectronic device and organic optoelectronic device and display device

A composition for an organic optoelectronic device, the composition comprising:

• a first compound;
• a second compound;
• and
• a third compound,
• wherein:
• the first compound, the second compound, and the third compound are different from each other,
• the first compound is represented by Chemical Formula I,
• the second compound is represented by Chemical Formula I, and
• the third compound is represented by Chemical Formula II or Chemical Formula
• wherein, in Chemical Formula I,
• Z1 is N or C-L1-R1,
• Z2 is N or C-L2-R2,
• Z3 is N or C-L3-R3,
• Z4 is N or C-L4-R4,
• Z5 is N or C-L1-R1,
• Z6 is N or C-L6-R6,
• at least two of Z1 to Z6 are N,
• L1 to L6 are independently a single bond, a substituted or unsubstituted C6 to C20 arylene group, a substituted or unsubstituted C2 to C20 heterocyclic group, or a combination thereof,
• R1 to R6 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a halogen, a cyano group, or a combination thereof,
• R1 to R6 are separate or adjacent groups thereof are linked with each other to form a substituted or unsubstituted aliphatic, aromatic, or heteroaromatic monocyclic ring or a substituted or unsubstituted aliphatic, aromatic, or heteroaromatic polycyclic ring, and
• when R1 to R6 are separate, at least one of R1 to R6 is a substituted or unsubstituted C2 to C30 heterocyclic group;
• wherein, in Chemical Formula II,
• L7 to L9 are independently a single bond, a substituted or unsubstituted C6 to C20 arylene group, a substituted or unsubstituted C2 to C20 heterocyclic group, or a combination thereof,
• R7 to R11 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a halogen, a cyano group, or a combination thereof, and
• R8 to R11 are separate or adjacent groups thereof are linked with each other to form a substituted or unsubstituted aliphatic, aromatic, or heteroaromatic monocyclic ring or a substituted or unsubstituted aliphatic, aromatic, or heteroaromatic polycyclic ring;
• wherein, in Chemical Formula III,
• L1 is a single bond, a substituted or unsubstituted C6 to C20 arylene group, a substituted or unsubstituted C2 to C20 heterocyclic group, or a combination thereof,
• R12 to R16 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a halogen, a cyano group, or a combination thereof,
• R12 to R16 are separate or adjacent groups thereof are linked with each other to form a substituted or unsubstituted aromatic monocyclic or polycyclic ring, and
• A is a moiety represented by one of Chemical Formulae A-1 to A-7,
• wherein, in Chemical Formulae A-1 to A-7,
• X1 is O, S, or NRa,
• a1* to a4* are independently a linking C or C-La-Rb,
• adjacent two of a1* to a4* are linking Cs and the remaining two are C-La-Rb,
• d1* to d4* are independently a linking C or C-Lb-Rc,
• adjacent two of d1* to d4* are linking Cs and the remaining two are C-Lb-Rc,
• e1* to e4* are independently a linking C or C-Lc-Rd,
• adjacent two of e1* to e4* are linking points and the remaining two are C-Lc-Rd,
• b1* and b2*, c1* and c2*, f1* and f2*, and g1* and *g2 are each a linking C,
• La, Lb, Lc, and L11 to L27 are independently a single bond, a substituted or unsubstituted C6 to C20 arylene group, a substituted or unsubstituted C2 to C20 heterocyclic group, or a combination thereof, and
• Ra, Rb, Rc, Rd, and R17 to R37 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, or a combination thereof.