Organic optoelectronic device and display device

An organic optoelectronic device, comprising

• an anode and a cathode facing each other,
• a light-emitting layer positioned between the anode and the cathode,
• a hole transport layer positioned between the anode and the light-emitting layer,
• an auxiliary hole transport layer positioned between the hole transport layer and the light-emitting layer,
• an electron transport layer positioned between the cathode and the light-emitting layer, and
• an auxiliary electron transport layer positioned between the electron transport layer and the light-emitting layer,
• wherein the auxiliary electron transport layer includes at least one kind of a first compound represented by at least one of Chemical Formulae 1-III to 1-IX, and
• the auxiliary hole transport layer includes at least one kind of a second compound represented by at least one of Chemical Formula 2-1 to Chemical Formula 2-3:
• wherein, in Chemical Formulae 1-III to 1-IX,
• Z1 to Z3 are CRa, wherein Ra for Z1 to Z3 is independently hydrogen, deuterium, or a substituted or unsubstituted C1 to C10 alkyl group,
• Z4 to Z12 are independently N or CRa, provided that at least one of Z4 to Z12 is N, each W is independently CRb,
• R5a to R5d and Rb are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a combination thereof,
• Ra for Z4, Z6, Z7, Z8 and Z10 to Z12 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a combination thereof, and
• Ra for Z5 and Z9 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, or a combination thereof,
• wherein, “substituted” in Chemical Formulae 1-III to 1-IX refers to replacement of at least one hydrogen by deuterium, a halogen, a hydroxy group, an amino group, a substituted or unsubstituted C1 to C30 amine group, a nitro group, a substituted or unsubstituted 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 C1 to C20 alkoxy group, a fluoro group, a C1 to C10 trifluoroalkyl group, or a cyano group,
• wherein, in Chemical Formulae 2-1 to 2-3,
• X1 and X2 are independently O, S, or CRcRd,
• R36 and R37, Rc, and Rd are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, or a combination thereof,
• Ar1 and Ar2 are independently a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group, and
• L7 to L9 are independently a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted heteroarylene group, or a combination thereof,
• wherein, “substituted” in Chemical Formulae 2-1 to 2-3 refers to replacement of at least one hydrogen by deuterium, a halogen, a hydroxy group, an amino group, a substituted or unsubstituted C1 to C30 amine group, a nitro group, a substituted or unsubstituted 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 C1 to C20 alkoxy group, a fluoro group, a C1 to C10 trifluoroalkyl group, or a cyano group.