Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, R37 is hydrogen, deuterium, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C2-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group; and ring CY1, R21 to R26, R30a, and R30b, are as described herein.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, M is a transition metal, X1 to X4 each independently C or N, X5 is O, S, N(R?), C(R?)(R?), or C(?O), wherein a bond between X5 and M is a covalent bond, and one of a bond between X2 and M, a bond between X3 and M, and a bond between X4 and M is a covalent bond, and the other two are each a coordinate bond, ring CY1 to ring CY4 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, and wherein T1 to T4, n1 to n4, Z1 to Z4, d1 to d4, L1 to L4, R1 to R4, a1 to a4, b1 to b4, and c1 to c4 are as provided herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: An organometallic compound, wherein the organometallic compound has a C2 symmetric structure, and is represented by Formula 1, wherein the sum of ?(Ir—N) and ?(Ir—C) is about 0.002 angstroms or less: Ir(L1)2(L2)??Formula 1 wherein, in Formula 1, L1 is a ligand represented by Formula 2 as provided herein, wherein one of two L1s is a first L1 ligand and the other L1s is a second L1 ligand and the first L1 ligand and the second L1 ligand are identical to each other, L2 is a ligand represented by Formula 3 as provided herein, and ?(Ir—N) and ?(Ir—C) are as defined herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: An organometallic compound represented by Formula 1: wherein in Formula 1, A1 to A4, M, and T1 to T3 are the same as described in the specification.

Abstract: An organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound: M(L1)n1(L2)n2??Formula 1 wherein, in Formula 1, M, L1, L2, n1, and n2 are each described herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: An organic light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a first host and a dopant, the dopant is an organometallic compound including platinum, the organic light-emitting device satisfies a condition of: HOMO(D)?HOMO(Host 1)?0.2 electron volts, HOMO(D) is a highest occupied molecular orbital (HOMO) energy level of the dopant in electron volts, HOMO(Host 1) is a HOMO) energy level of the first host in electron volts, and HOMO(D) and HOMO(Host 1) are each measured using a photoelectron spectrometer in an ambient atmosphere.

Abstract: A composition including a first compound represented by Formula 1 and a second compound represented by Formula 2 and an organic light-emitting device including the composition: Formulae 1 and 2 may each be understood by referring to the descriptions thereof provided herein.

Abstract: An organic light-emitting device including a first electrode, a second electrode, an emission layer disposed between the first electrode and the second electrode, a hole transport region disposed between the first electrode and the emission layer, and an electron transport region disposed between the emission layer and the second electrode, wherein the emission layer includes a host and a dopant, wherein the dopant is an iridium-free organometallic compound, and wherein a dopant concentration profile of the emission layer satisfies predetermined parameters disclosed in the specification.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, M is a transition metal, X1 to X4 each independently C or N, X5 is O, S, N(R?), C(R?)(R?), or C(?O), wherein a bond between X5 and M is a covalent bond, and one of a bond between X2 and M, a bond between X3 and M, and a bond between X4 and M is a covalent bond, and the other two are each a coordinate bond, ring CY1 to ring CY4 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, and wherein T1 to T4, n1 to n4, Z1 to Z4, d1 to d4, L1 to L4, R1 to R4, a1 to a4, b1 to b4, and c1 to c4 are as provided herein.

Abstract: Provided are a compound and an organic light-emitting device including the same. The composition includes a first compound represented by Formula 1, a second compound having a highest occupied molecular orbital (HOMO) energy level of ?5.5 eV, and a third compound having a lowest unoccupied molecular orbital (LUMO) energy level of ?2.8 eV or less. M(L1)n1(L2)n2??Formula 1 M, L1, L2, n1, and n2 in Formula 1 are the same as described in the present specification.

Abstract: An organometallic compound represented by Formula 1: M(L1)n1(L2)n2??Formula 1 wherein M is a transition metal, L1 is a ligand represented by Formula 2 as provided herein, n1 is 1, 2, or 3, wherein, when n1 is 2, two L1 groups are identical to or different from each other, and when n1 is 3, two or more of three L1 groups are different from each other, L2 is a monodentate ligand, a bidentate ligand, a tridentate ligand, or a tetradentate ligand, and n2 is 0, 1, 2, 3, or 4, wherein, when n2 is 2 or greater, two or more L2 groups are identical to or different from each other, and L1 and L2 are different from each other.

Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, R37 is hydrogen, deuterium, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C2-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group; and ring CY1, R21 to R26, R30a, and R30b, are as described herein.

Abstract: An organometallic compound represented by Formula 1: M(L1)n1(L2)n2??Formula 1 In Formula 1, M is a transition metal; L1 is a ligand represented by Formula 2 as disclosed herein; L2 is a monodentate ligand, a bidentate ligand, a tridentate ligand, or a tetradentate ligand; n1 is 1, 2, or 3, wherein, when n1 is 2 or greater, two or more ligands L1 are identical to or different from each other; n2 is 0, 1, 2, 3, or 4, wherein, when n2 is 2 or greater, two or more ligands L2 are identical to or different from each other; and L1 and L2 are different from each other.