Organometallic compound, organic light-emitting device including the same and apparatus including the organometallic compound

An organic light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• an organic layer between the first electrode and the second electrode and comprising an emission layer;
• and
• at least one organometallic compound represented by Formula 1:
• wherein, in Formula 1,
• M is selected from the first Period of transition metals, the second period of transition metals, the third period of transition metals, and meitnerium (Mt);
• La is selected from ligands represented by Formula 2,
• n1 is 1 or 2,
• n2 is 0, 1, 2, or 3, and when n2 is 2 or more, two or more Lb(s) are identical to or different from each other,
• La and Lb are different from each other,
• wherein, in Formula 2,
• A1 and A2 are each independently selected from a C5-C30 carbocyclic group and a C1-C30 heterocyclic group,
• X1, X2, X3, and X4 are each independently C or N,
• Y1 and Y2 are each independently C or N,
• T1, T2 and T3 are each independently selected from a single bond, *—O—*′, *—S—*′, —C(R4)(R5)—*′, *—Si(R4)(R5)—*′, *—B(R4)—*′, *—N(R4)—*′, and *—P(R4)—*′;
• b1 to b3 are each independently an integer of 1, 2, or 3,
• R1 to R5 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazino group, a hydrazono group, 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), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Qi), —S(═O)2(Q1), and —P(═O)(Q1)(Q2),
• R1 to R3 are optionally linked to a neighboring group via a single bond, —C(Q4)(Q5)-, —Si(Q4)(Q5)-, —O—, —S—, —N(Q4)-, —B(Q4)-, —C(═O)—, —S(═O)2—, —S(═O)(Q4)(Q5)-, or —P(═O)(Q4)- to form a unsubstituted or substituted C5-C30 carbocyclic group or unsubstituted or substituted C1-C30 heterocyclic group,
• a1 and a2 are each independently an integer from 0 to 10,
• a3 is 0, 1, or 2, and
• at least one substituent of the substituted C5-C30 carbocyclic group, the substituted C1-C30 heterocyclic 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 C1-C10 heterocycloalkyl group, the substituted C3-C10 cycloalkenyl group, the substituted C1-C10 heterocycloalkenyl group, the substituted C6-C60 aryl group, the substituted C6-C60 aryloxy group, the substituted C6-C60 arylthio group, the substituted C1-C60 heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed heteropolycyclic group is selected from:
• 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, and a C1-C60 alkoxy group;
• a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono 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 monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —B(Q11)(Q12), —C(═O)(Q11), —S(═O)2(Q11), and —P(═O)(Q11)(Q12);
• 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 monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a biphenyl group, and a terphenyl 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 monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a biphenyl group, and a terphenyl group, each substituted with at least one selected from 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 monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a biphenyl group, a terphenyl group, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —B(Q21)(Q22), —C(═O)(Q21), —S(═O)2(Q21), and —P(═O)(Q21)(Q22);
• and
• —Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —B(Q31)(Q32), —C(═O)(Q31), —S(═O)2(Q31), and —P(═O)(Q31)(Q32),
• wherein Q1 to Q5, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently selected from 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 aryl group substituted with a C1-C60 alkyl group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a biphenyl group, and a terphenyl group,
• *1, *2, and *3 are each a binding site to a central metal M of Formula 1,
• * and *′ each indicate a binding site to a neighboring atom,
• wherein Lb is selected from ligands represented by Formula 3:
• wherein, in Formula 3,
• A11 is selected from a C5-C30 carbocyclic group and a C1-C30 heterocyclic group,
• L1 and L2 are each independently selected from a single bond, *—O—*′, *—S—*′, *—C(R14)(R15)—*′, *—Si(R14)(R15)—*′, *—B(R14)—′, *—N(R14)—′, and *—P(R14)—*′,
• c1 and c2 are each independently 1, 2, or 3,
• X11, X12, X13, and X14 are each independently C or N,
• Y11 is C or N,
• T11, T12 and T13 are each independently selected from a single bond, *—O—*′, *—S—*′, *—C(R16)(R17)—*′, *—Si(R16)(R17)—*′, *—B(R16)—′, *—N(R16)—′, and *—P(R16)—*′,
• b11, b12, and b13 are each independently 1, 2, or 3,
• R11, R12, R13, R14, R15, R16, and R17 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazino group, a hydrazono group, 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 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), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), and —P(═O)(Q1)(Q2),
• R11 to R13 are optionally linked together to a neighboring group via a single bond, —C(Q4)(Q5)-, —Si(Q4)(Q5)-, —O—, —S—, —N(Q4)-, —B(Q4)-, —C(═O)—, —S(═O)2—, —S(═O)(Q4)(Q5)-, or —P(═O)(Q)- to form a unsubstituted or substituted C5-C30 carbocyclic group or a unsubstituted or substituted C1-C30 heterocyclic group,
• a11 is an integer from 0 to 10,
• a12 and a13 are each independently 0, 1, 2, or 3,
• *1, *2 and *3 are each a binding site to a central metal M of Formula 1, and
• * and *′ each indicate a binding site to a neighboring atom.