Compound for an organic optoelectronic device, organic optoelectronic device, and display device using the same

An organic optoelectronic device, comprising:

• an anode and a cathode facing each other;
• and
• an organic layer between the anode and the cathode,
• wherein:
• the organic layer includes a light emitting layer and at least one of a hole injection layer, a hole transport layer, and an electron transport layer,
• the light emitting layer includes a first host compound represented by Chemical Formula 1-3a-I or Chemical Formula 1-4a-I and a second host represented by Chemical Formula 2:
• in Chemical Formulae 1-3a-I and 1-4a-I,
• X1 is O or S,
• Z1 to Z3 are each 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,
• R1 is a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, and
• Ra, R2 to R4 and R9 to R13 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,
• in Chemical Formula 2,
• Y1 and Y2 are each independently a substituted or unsubstituted C6 to C20 aryl group or a substituted or unsubstituted C2 to C30 heterocyclic group,
• L3 and L4 are each independently a single bond or a substituted or unsubstituted C6 to C20 arylene group,
• Rb and R5 to R8 are each independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• m is an integer ranging from 0 to 2.