Light-emitting device and electronic apparatus including light-emitting device

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• an interlayer disposed between the first electrode and the second electrode, wherein
• the interlayer comprises an emission layer and an electron blocking layer,
• the electron blocking layer is between the first electrode and the emission layer,
• the emission layer is between the second electrode and the electron blocking layer,
• the electron blocking layer comprises a first electron blocking layer and a second electron blocking layer,
• the first electron blocking layer is between the second electron blocking layer and the first electrode,
• the second electron blocking layer is between the first electron blocking layer and the emission layer,
• the first electron blocking layer comprises a first compound represented by Formula 1,
• the second electron blocking layer comprises a second compound represented by Formula 2, and
• the first compound is different from the second compound:
• wherein in Formulae 1 to 3,
• L1 is a benzene group, a naphthalene group, a pyridine group, a pyridazine group, a pyrimidine group, a pyrazine group, a triazine group, a tetrazine group, a quinoline group, or an isoquinoline group,
• a1 is an integer from 0 to 3,
• Ar1 to Ar4 are each independently a group represented by Formula 3, a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a pyridine group, a pyridazine group, a pyrimidine group, a pyrazine group, a triazine group, a tetrazine group, a pentazine group, a dibenzofuran group, a dibenzothiophene group, a dibenzoselenophene group, a carbazole group, a fluorene group, a dibenzosilole group, or a spirobifluorene group, and at least one of Ar1 to Ar4 is a group represented by Formula 3,
• n1 is an integer of 1 or greater,
• Y31 is N or C,
• Y32 is N or C,
• Y33 is N or C,
• Y34 is N or C,
• at least one of Y31 to Y34 is C,
• * indicates a binding site to a nitrogen (N) atom in Formula 1,
• CY3 is a C3-C60 carbocyclic group or a C1-C60 heterocyclic group,
• L21 to L23 are each independently a single bond, a C5-C30 carbocyclic group unsubstituted or substituted with at least one R10a, or a C1-C30 heterocyclic group unsubstituted or substituted with at least one R10a,
• a21 to a23 are each independently an integer from 0 to 3,
• R21 to R23 and R31 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkenyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkynyl group unsubstituted or substituted with at least one R10a, a C1-C60 alkoxy group unsubstituted or substituted with at least one R10a, a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a, a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a, a C6-C60 aryloxy group unsubstituted or substituted with at least one R10a, a C6-C60 arylthio group unsubstituted or substituted with at least one R10a, a C7-C60 aryl alkyl group unsubstituted or substituted with at least one R10a, a C2-C60 heteroaryl alkyl group unsubstituted or substituted with at least one R10a, —Si(Q1)(Q2)(Q3), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), or —P(═O)(Q1)(Q2),
• b21 to b23 are each independently an integer from 0 to 10,
• b31 is an integer from 0 to 3, and
• R10a is:
• deuterium (-D), —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, or a nitro group;
• a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, or a C1-C60 alkoxy group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 aryl alkyl group, a C2-C60 heteroaryl alkyl group, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —B(Q11)(Q12), —C(═O)(Q11), —S(═O)2(Q11), —P(═O)(Q11)(Q12), or a combination thereof;
• a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 aryl alkyl group, or a C2-C60 heteroaryl alkyl group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 aryl alkyl group, a C2-C60 heteroaryl alkyl group, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —B(Q21)(Q22), —C(═O)(Q21), —S(═O)2(Q21), —P(═O)(Q21)(Q22), or a combination thereof;
• or
• —Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —B(Q31)(Q32), —C(═O)(Q31), —S(═O)2(Q31), or —P(═O)(Q31)(Q32),
• wherein Q1 to Q3, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently:
• hydrogen;
• deuterium;
• —F;
• —Cl;
• —Br;
• —I;
• a hydroxyl group;
• a cyano group;
• a nitro group;
• a C1-C60 alkyl group;
• a C2-C60 alkenyl group;
• a C2-C60 alkynyl group;
• a C1-C60 alkoxy group;
• a C3-C60 carbocyclic group or a C1-C60 heterocyclic group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C1-C60 alkyl group, a C1-C60 alkoxy group, a phenyl group, a biphenyl group, or a combination thereof;
• a C7-C60 aryl alkyl group;
• or a C2-C60 heteroaryl alkyl group.