Organic light-emitting device and display apparatus including the same

An organic light-emitting device comprising:

• a first electrode;
• a second electrode;
• and
• an organic layer between the first electrode and the second electrode,
• wherein the organic layer comprises an emission layer,
• the emission layer comprises a first compound, a second compound, and a third compound,
• the first compound is represented by Formula 1,
• the second compound is represented by Formula 2,
• the third compound is represented by Formula 3, and
• the first compound and the second compound are different from each other:
• wherein, in Formulae 1 to 3, 1A, and 2A to 2C,
• L11 is selected from the group consisting of:
• a π electron-depleted nitrogen-free cyclic group;
• and
• a π electron-depleted nitrogen-free cyclic group substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, and —Si(Q31)(Q32)(Q33),
• a11 is selected from the group consisting of 0, 1, 2, and 3,
• Y11 is a group represented by Formula 1A,
• Y12 is selected from the group consisting of:
• —F, a cyano group, and a π electron-depleted nitrogen-containing cyclic group;
• a C1-C60 alkyl group, a π electron-depleted nitrogen-containing cyclic group, and a π electron-depleted nitrogen-free cyclic group, each substituted with at least one selected from the group consisting of —F and a cyano group;
• and
• a π electron-depleted nitrogen-containing cyclic group substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-containing cyclic group, and a π electron-depleted nitrogen-free cyclic group,
• c11 and c12 are each independently selected from the group consisting of 1, 2, and 3,
• X11 is selected from the group consisting of a single bond, N(R13), O, and S,
• X12 is selected from the group consisting of a single bond, N(R14), O, and S,
• X11 and X12 are not a single bond at the same time,
• A11 and A12 are each independently a π electron-depleted nitrogen-free cyclic group or a substituted or unsubstituted carbazole group,
• R11 to R14 are each independently selected from the group consisting of:
• a binding site, hydrogen, deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, and —Si(Q1)(Q2)(Q3);
• a π electron-depleted nitrogen-free cyclic group substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, and —Si(Q31)(Q32)(Q33);
• and
• a π electron-depleted nitrogen-free cyclic group substituted with a π electron-depleted nitrogen-free cyclic group that is substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, and —Si(Q21)(Q22)(Q23), wherein one selected from the group consisting of R11 to R14 is a binding site,
• b11 and b12 are each independently selected from the group consisting of 1, 2, 3, 4, 5, and 6,
• L21 is selected from the group consisting of a substituted or unsubstituted C5-C60 carbocyclic group and a substituted or unsubstituted C1-C60 heterocyclic group,
• a21 is selected from the group consisting of 0, 1, 2, and 3,
• Y21 is a group represented by one selected from the group consisting of Formulae 2A to 2C,
• Y22 is selected from the group consisting of:
• —F, a cyano group, and a π electron-depleted nitrogen-containing cyclic group;
• a C1-C60 alkyl group, a π electron-depleted nitrogen-containing cyclic group, and a π electron-depleted nitrogen-free cyclic group, each substituted with at least one selected from the group consisting of —F and a cyano group;
• and
• a π electron-depleted nitrogen-containing cyclic group substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-containing cyclic group, and a π electron-depleted nitrogen-free cyclic group,
• c21 and c22 are each independently selected from the group consisting of 1, 2, 3, 4, 5, and 6,
• X21 is selected from the group consisting of a single bond, N(R24), O, and S,
• X22 is selected from the group consisting of a single bond, N(R25), O, and S,
• X23 is selected from the group consisting of a single bond, N(R26), O, and S,
• A21 to A23 are each independently a π electron-depleted nitrogen-free cyclic group,
• R21 to R26 are each independently selected from the group consisting of:
• a binding site, hydrogen, deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, —N(Q1)(Q2), and —Si(Q1)(Q2)(Q3);
• a π electron-depleted nitrogen-free cyclic group substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, —N(Q31)(Q32), and —Si(Q31)(Q32)(Q33);
• and
• a π electron-depleted nitrogen-free cyclic group substituted with a π electron-depleted nitrogen-free cyclic group that is substituted with at least one selected from the group consisting of deuterium, a C1-C60 alkyl group, a π electron-depleted nitrogen-free cyclic group, —N(Q21)(Q22), and —Si(Q21)(Q22)(Q23), wherein one selected from the group consisting of R21 to R24 in Formula 2A is a binding site, one selected from the group consisting of R21 to R25 in Formula 2B is a binding site, and one selected from the group consisting of R21 to R26 in Formula 2C is a binding site,
• b21 to b23 are each independently selected from the group consisting of 1, 2, 3, 4, 5, and 6,
• L31 is selected from the group consisting of a substituted or unsubstituted C5-C60 carbocyclic group and a substituted or unsubstituted C1-C60 heterocyclic group,
• a31 is selected from the group consisting of 0, 1, 2, and 3,
• R31 to R37 are each independently selected from the group consisting of hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C2-C60 alkenyl group, a substituted or unsubstituted C2-C60 alkynyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C1-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C1-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthio group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —Si(Q1)(Q2)(Q3), —B(Q1)(Q2), —N(Q1)(Q2), —P(Q1)(Q2), —C(═O)(Q1), —S(═O)(Q1), —S(═O)2(Q1), —P(═O)(Q1)(Q2), and —P(═S)(Q1)(Q2), wherein R31 to R37 are optionally linked to form a substituted or unsubstituted C5-C60 carbocyclic group or a substituted or unsubstituted C1-C60 heterocyclic group,
• b31 is selected from the group consisting of 1, 2, 3, 4, 5, and 6,
• Y31 and Y32 are each independently selected from the group consisting of —F, —Cl, —Br, —I, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C6-C60 aryl group, and a substituted or unsubstituted C6-C60 aryloxy group, wherein Y31 and Y32 are optionally linked to form a substituted or unsubstituted C5-C60 carbocyclic group or a substituted or unsubstituted C1-C60 heterocyclic group,
• Q1 to Q3, Q21 to Q23, and Q31 to Q33 are each independently selected from the group consisting of hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a C1-C60 hetero aryloxy group, a C1-C60 hetero arylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a biphenyl group, and a terphenyl group, and
• * indicates a binding site to a neighboring atom, and
• wherein the first compound is about 60 wt % to about 90 wt % in amount, the second compound is about 10 wt % to about 40 wt % in amount, and the third compound is about 0.5 wt % to about 5 wt % in amount, each based on a total weight of the emission layer, and
• a weight ratio among the first compound, the second compound and the third compound is 70:29:1 to 80:19.5:0.5.