Composition for organic optoelectronic device, organic optoelectronic device, and display device

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

• a first host and a second host, wherein,
• the first host is represented by Chemical Formula 1-1 or Chemical Formula 1-3, and
• the second host is represented by Chemical Formula 2C,
• wherein, in Chemical Formula 1-1 and Chemical Formula 1-3,
• X1 is O or S,
• Z1 to Z3 are independently N or CRa,
• at least two of Z1 to Z3 are N,
• L1 is a single bond, or a substituted or unsubstituted C6 to C20 arylene group,
• L2 is a single bond,
• A is represented by Chemical Formula A-1,
• R1 is a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group,
• Ra and R2 to R4 are independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1 to C10 alkyl group, or a substituted or unsubstituted C6 to C20 aryl group, and
• R9 to R12 are independently hydrogen, deuterium, a cyano group, or a substituted or unsubstituted C1 to C10 alkyl group, and
• * is a linking point with L1;
• wherein, in Chemical Formula 2C,
• Y1 and Y2 are independently a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group,
• La1, La2, L3, and L4 are independently a single bond, or a substituted or unsubstituted C6 to C20 arylene group, and
• Rb1, Rb2, and R5 to R8 are independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group.