Abstract: An organic light-emitting device which including a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein an emission layer includes a first material, a second material, and a third material satisfying certain conditions.

Abstract: Provided are an organometallic compound represented by Formula 1 and an organic light-emitting device including the same: M1(Ln1)n1(Ln2)3-n1 ??Formula 1 wherein, in Formula 1, Ln2 is a ligand represented by Formula 1A, and other substituents are the same as described in the detailed description of the present specification:

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein X1 is C or N; X2 is C or N; X3 is C or N; X4 is C or N; ring CY1 and ring CY2 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; Z1 and Z2 are each independently —Si(Q1)(Q2)(Q3) or —Ge(Q1)(Q2)(Q3); a1 and a2 are each independently an integer from 0 to 10; a sum of a1 and a2 is 1 or greater; and the remaining substituent groups are as described herein.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, in Formula 1, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2: wherein, X1 is C or N, X2 is C or N, Y1 is O, S, Se, C(R41)(R42), or N(R43), at least one R2 is a C1-C10 alkyl group that is substituted with a fluorine, b2 is an integer from 1 to 6, b11 is 1 or 2, b12 is an integer from 1 to 4, * and *? each indicate a binding site to M1, and the other substituent groups in Formulae 1A and 1B are as described herein.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein X1 and X2 are each independently C or N, ring CY2 and ring CY4 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, ring CY3 is a 5-membered heterocyclic group; a 5-membered heterocyclic group condensed with a C5-C30 carbocyclic group; or a 5-membered heterocyclic group condensed with a C1-C30 heterocyclic group, Y1 is O, S, Se, C(R5)(R6), N(R7), Si(R8)(R9), or Ge(R8)(R9), at least one of R12 and R13 comprises deuterium, and the other substituent groups are as described herein.

Abstract: An organometallic compound represented by Formula 1: M1(Ln1)n1(Ln2)n2??Formula 1 wherein M1 is a transition metal, Ln1 is a ligand represented by Formula 1-1, Ln2 is a bidentate ligand, n1 is 1, 2, or 3, and n2 is 0, 1, or 2, wherein X1, X2, X11 to X14, Y1, R10, R20, ring CY2, b10, and b20 are as defined herein, and wherein * and *? each indicate a binding site to M1.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein X1 is C or N, and X2 is C or N, b1 is an integer from 1 to 6, b2 is an integer from 1 to 8, * and *? each indicate a binding site to M1 in Formula 1, and the remaining substituent groups are as described herein.

Abstract: An organometallic compound represented by Formula 1 and an organic light-emitting device including the same: Y2, ring A2, R1 to R8, R13 to R20, and d2 in Formula 1 may be each independently the same as described in the specification.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein, X1 to X4 are each independently C or N, ring CY1 and ring CY2 are each independently a C6-C30 carbocyclic group or a C1-C30 heterocyclic group, Z1 and Z2 are each independently —Si(Q1)(Q2)(Q3) or —Ge(Q1)(Q2)(Q3), a1 and a2 are each independently an integer from 0 to 10, a sum of a1 and a2 is 1 or greater, Y1 is O, S, Se, C(R51)(R52), or N(R53), Y2 is O, S, Se, C(R61)(R62), or N(R63), * and *? each indicate a binding site to M1, and the other substituent groups are as described herein.

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

Abstract: An organometallic compound represented by Formula 1: wherein M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein Formulae 1A and 1B are as described herein.

Abstract: An organometallic compound represented by Formula 1 and an organic light-emitting device including the same: Y2, ring A2, R1 to R8, R13 to R20, and d2 in Formula 1 may be each independently 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: An organic light-emitting device including: a first electrode; a second electrode; and an organic layer arranged between the first electrode and the second electrode, the organic layer includes an emission layer, wherein the organic layer further includes a hole transport region arranged between the first electrode and the emission layer, the hole transport region includes an emission auxiliary layer, the emission layer includes a first compound that is an organometallic compound represented by Formula 1, the emission auxiliary layer includes a second compound that is a heterocyclic compound represented by Formula 2: wherein, in Formulae 1 and 2, Y2 is C, ring A2 is a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, and R1 to R8, R13 to R20, R31 to R37, d2, X30, Z1, are as described in the detailed description.

Abstract: An organometallic compound represented by Formula 1: wherein, Y1 to Y4 are each independently C or N, one of Y1 to Y4 is N bonded to Ir in Formula 1, and one of the remaining Y1 to Y4 is C bonded to ring CY2 in Formula 1, Y9 is O, S, N(R19), C(R19a)(R19b), or Si(R19a)(R19b), X2 is C, ring CY1 and ring CY2 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, Z1 is a group represented by —Si(Q3)(Q4)(Q5) or a group represented by —Ge(Q3)(Q4)(Q5), a1 is an integer from 0 to 2, a2 is an integer from 0 to 20, b1 and b2 are each independently an integer from 1 to 10, and R1, R19, R19a, R19b, R2, R30a, R30b, R37, and Z2 are as described herein.

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

Abstract: A thin film including a combination of a donor compound and an acceptor compound, and a phosphorescent dopant, wherein the donor compound and the acceptor compound form an exciplex having characteristics described in the specification.

Abstract: A light-emitting device and an electronic apparatus including the same are disclosed. The light-emitting device, includes: a first electrode; a second electrode facing the first electrode; and an interlayer arranged between the first electrode and the second electrode, wherein the interlayer includes a first emission layer and a second emission layer, the first emission layer includes a first compound that emits a first light having a first spectrum, the second emission layer includes a second compound that emits a second light having a second spectrum, the first compound includes a first transition metal, the second compound includes a second transition metal, the first transition metal and the second transition metal are different from each other, |HOMO(1)?HOMO(2)| is about 0.05 eV to about 0.4 eV, and |?max(1)??max(2)| is about 0 nm to about 30 nm, wherein HOMO(1), HOMO(2), ?max(1), and ?max(2) are as described herein.

Abstract: A mixed layer including: a matrix material; and a dopant composition, wherein the dopant composition is doped in the matrix material, the dopant composition comprises a first dopant and a second dopant, an amount by weight of the matrix material is greater than an amount by weight of the dopant composition in the mixed layer, the matrix material, the first dopant, and the second dopant are different from each other, the matrix material does not include a transition metal, the first dopant includes a transition metal, the mixed layer is a layer formed by deposition of the matrix material, the first dopant, and the second dopant, the mixed layer has a concentration profile of the dopant composition with respect to a thickness of the mixed layer, provided that Tm1>Tp>Tm1+2 is satisfied, wherein Tm1, Tp, and Tm1+2 are respectively as described herein.

Abstract: An organometallic compound represented by Formula 1: wherein Y1 to Y4 are each independently C or N, one of Y1 to Y4 is N bonded to iridium in Formula 1, and another of Y1 to Y4 is C bonded to ring CY2 in Formula 1, Y9 is O, S, N(R19), C(R19a)(R19b), or Si(R19a)(R19b), X2 is C, ring CY1 and ring CY2 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, a1 and a2 are each independently an integer from 0 to 20, and R1, R19, R19a, R19b, R2, R30a, R30b, and R37 are each as described herein.