Organic light-emitting device

An organic light-emitting device (OLED), comprising

• a first electrode;
• a second electrode;
• an emission layer between the first electrode and the second electrode, the emission layer including an electron-transporting host and a hole-transporting host;
• a hole transport region between the first electrode and the emission layer, the hole transport region including a hole transport layer, the hole transport layer including a hole transport material;
• and
• an electron transport region between the emission layer and the second electrode, the electron transport region including an electron transport layer, the electron transport layer includes an electron transport material,
• wherein the electron-transporting host includes a compound represented by Formula 10 below,
• wherein in Formula 10,
• R27 is phenyl,
• each of a21 and a22 are independently an integer of 0 to 1,
• X11 to X13 are N,
• each of L21 and L22 in Formula 10 are independently selected from one of,
• a phenylene group, a naphthylene group, a phenalenylene group, a phenanthrenylene group, a triphenylenylene group, an anthracenylene group, a pyrrolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an isoindolylene group, an indolylene group, a furanylene group, a benzofuranylene group, a thiophenylene group, a benzothiophenylene group, and a triazinylene group,
• a phenylene group, a naphthylene group, a phenalenylene group, a phenanthrenylene group, a triphenylenylene group, an anthracenylene group, a pyrrolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an isoindolylene group, an indolylene group, a furanylene group, a benzofuranylene group, a thiophenylene group, a benzothiophenylene group, and a triazinylene group, each substituted with at least one of a 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 C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an anthracenyl group, a pyrenyl group, a phenanthrenyl group, a triphenylenyl group, a fluorenyl group, a carbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a phthalazinyl group, a quinoxalinyl group, a cinnolinyl group, and a quinazolinyl group, and
• groups represented by Formulae 11-1 to 11-6 below,
• wherein in Formulae 11-1 to 11-6,
• each of Z51 to Z56 are independently selected from a hydrogen, a 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 C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an anthracenyl group, a pyrenyl group, a phenanthrenyl group, a triphenylenyl group, a fluorenyl group, a carbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a phthalazinyl group, a quinoxalinyl group, a cinnolinyl group, and a quinazolinyl group, and
• indicates a binding site to a neighboring atom,
• wherein R21 in Formula 10 is selected from groups represented by Formulae 15-1 to 15-40 and —Si(Q41)(Q42)(Q43),
• each of Q41 to Q43 are independently selected from a hydrogen, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an anthracenyl group, a pyrenyl group, a phenanthrenyl group, a triphenylenyl group, a fluorenyl group, a carbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a phthalazinyl group, a quinoxalinyl group, a cinnolinyl group, and a quinazolinyl group,
• each of R22 to R24 are independently selected from a hydrogen, a 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 C1-C20 alkyl group, and a C1-C20 alkoxy group, each of R25, R26, and R28 are independently selected from a hydrogen, a 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 C1-C20 alkyl group, a C1-C20 alkoxy group, and groups represented by Formulae 15-1 to 15-24 and 15-37 to 15-39 below,
• each of R29 and R30 are independently selected from a hydrogen, a 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 C1-C20 alkyl group, a C1-C20 alkoxy group, and groups represented by Formulae 15-1 to 15-40 below,
• at least one of R25, R26, and R28 is selected from groups represented by Formulae 15-1 to 15-24 and 15-37 to 15-39 below, and
• at least one of R29 and R30 is selected from groups represented by Formulae 15-1 to 15-40 below,
• wherein in Formulae 15-1 to 15-40,
• each of Z61 to Z63 are independently selected from a hydrogen, a 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 C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkenyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an anthracenyl group, a pyrenyl group, a phenanthrenyl group, a fluorenyl group, a carbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a phthalazinyl group, a quinoxalinyl group, a cinnolinyl group, and a quinazolinyl group,
• f1 is one of 1 and 2, f2 is an integer of 1 to 3, f3 is an integer of 1 to 4, f4 is an integer of 1 to 5, f5 is an integer of 1 to 6, f6 is an integer of 1 to 7, and f8 is an integer of 1 to 9, and
• indicates a binding site to a neighboring atom,
• wherein the hole-transporting host includes a compound represented by Formula 20 below,
• wherein in Formula 20,
• each of L31 to L33 are independently selected from a substituted or unsubstituted C3-C10 cycloalkylene group, a substituted or unsubstituted C3-C10 cycloalkenylene group, a substituted or unsubstituted C6-C60 arylene group, and a substituted or unsubstituted divalent non-aromatic condensed polycyclic group,
• each of a3 1 to a33 are independently an integer of 0 to 5,
• each of R31 and R32 are independently a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, and a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group,
• each of R33 to R36 are independently a hydrogen, a 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 C3-C10 cycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, and a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group,
• each of b31 to b36 are independently an integer of 1 to 3, and
• at least one of substituents of the substituted C3-C10 cycloalkylene group, the substituted C3-C10 cycloalkenylene group, the substituted C6-C60 arylene group, the substituted divalent non-aromatic condensed polycyclic group, the substituted C1-C60 alkyl group, the substituted C2-C60 alkenyl group, the substituted C2-C60 alkynyl group, the substituted C1-C60 alkoxy group, the substituted C3-C10 cycloalkyl group, the substituted C3-C10 cycloalkenyl group, the substituted C6-C60 aryl group, and the substituted monovalent non-aromatic condensed polycyclic group is selected from a 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 C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkenyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 cycloalkenyl group, a C6-C60 aryl group, and a monovalent non-aromatic condensed polycyclic group.