Abstract: Provided is an organic light-emitting device comprising: an anode; a cathode that is opposite to the anode; and a light emitting layer that is between the anode and the cathode, wherein the light emitting layer comprises a first compound of the following Chemical Formula 1, a second compound of the following Chemical Formula 2 and a third compound of the following Chemical Formula 3, as defined in the specification:

Abstract: A heterocyclic compound represented by Chemical Formula 1 or 2, and an organic light emitting device including the same, and the heterocyclic compound which is used as a material of an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: Provided is an organic light emitting device comprising: a positive electrode; a negative electrode opposite the positive electrode; and a light emitting layer between the positive electrode and negative electrode, wherein the light emitting layer comprises a first compound of Chemical Formula 1, a second compound of Chemical Formula 2, and a third compound of Chemical Formula 3 as defined in the specification:

Abstract: Provided is a compound of Chemical Formula 1: wherein: each X is independently N or CH, with two or more of the X being N; Y is O or S; and the other substituents are as described in the specification, where at least one of Ar1, Ar2 and R1 is substituted with at least one deuterium, or at least one of R2 is deuterium; and an organic light-emitting device including the same. When the compound is used as an organic light-emitting layer material, it exhibits excellent characteristics in terms of efficiency and lifetime. This is considered to be because the core dibenzofuran or dibenzothiophene group is substituted with the triazine and carbazole groups, and when at least one of Ar1, Ar2 and R1 is substituted with at least one deuterium, or at least one of R2 is deuterium, the compound exhibits increased electronic stability.

Abstract: Provided is an organic light emitting device comprising: an anode; a cathode; and a light-emitting layer disposed between the anode and the cathode, wherein the light-emitting layer comprises a compound of the following Chemical Formula 1, a compound of the following Chemical Formula 2, and a compound of the following Chemical Formula 3; as defined in the specification.

Abstract: Provided is an organic light-emitting device with improved driving voltage, efficiency, and lifetime, comprising: an anode; a cathode; a light emitting layer between the anode and the cathode; an electron blocking layer between the anode and the light-emitting layer; and a hole transport layer between the electron blocking layer and the anode, wherein the light-emitting layer includes a compound of Formula 1, a compound of Formula 2, and a compound of Formula 3: where A is a benzene ring condensed with two adjacent pentagonal rings, B is a benzene ring condensed with two adjacent pentagonal rings, and the other substituents are as defined in the specification.

Abstract: Provided is a compound of Chemical Formula 1: wherein: X1 to X3 are each independently N or CH, provided that at least two of X1 to X3 are N, Y is O or S, L1 and L2 are each independently a single bond, or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene containing one or more of O, N, Si, or S, and A is Chemical Formula 2 or 3, each Z is independently CR, or two adjacent Zs are C each linked to the following Chemical Formula 4 at * to form a fused ring, and the rest are each independently CR: T is O, S, CQ1Q2, or NAr4, and Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O, or S, and an organic light emitting device including the same.

Abstract: Provided is an organic light emitting device comprising: an anode, a cathode, a light emitting layer between the anode and the cathode, an electron inhibition layer between the anode and the light emitting layer, and a hole transport layer between the electron inhibition layer and the anode, wherein the light emitting layer comprises a compound of the following Chemical Formula 1, a compound of the following Chemical Formula 2, and a compound of the following Chemical Formula 3 as defined in the specification: having improved driving voltage, efficiency, and lifetime.

Abstract: Provided is an organic light-emitting device comprising an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, wherein the light-emitting layer comprises a first compound of Chemical Formula 1 and a second compound of Chemical Formula 2: wherein: A is Chemical Formula 1a or 1b: Ar1 and Ar2 are each independently a C6-60 aromatic ring or a C2-60 heteroaromatic ring, and Ar1 and Ar2 are unsubstituted, or substituted with C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; Ar?1 and Ar?2 are each independently substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl; provided that a1+b1+c1+d+e+f is 1 or more; or a2+b2+c2+d+e+f is 1 or more; R?1 and R?2 are each independently hydrogen, deuterium, C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; and r and s are each independently 0 to 7.

Abstract: Provided is a compound of Chemical Formula 1: wherein: Y is O or S; X1 to X3 are each N or CH, and one or more of X1 to X3 is N; and Ar1 to Ar4 are the same as or different from each other, and each independently is an aryl group having 6 to 20 carbon atoms that is unsubstituted or substituted with nitrile or a heteroaryl group having 2 to 20 carbon atoms; or a tricyclic heteroaryl group having 2 to 20 carbon atoms that is unsubstituted or substituted with an aryl group having 6 to 20 carbon atoms, and an organic light emitting device including the same.

Abstract: Provided is a compound of wherein: Y is O or S; X1 to X3 are each N or CH, and one or more of X1 to X3 is N; and Ar1 to Ar4 are the same as or different from each other, and each independently is an aryl group having 6 to 20 carbon atoms that is unsubstituted or substituted with nitrile or a heteroaryl group having 2 to 20 carbon atoms; or a tricyclic heteroaryl group having 2 to 20 carbon atoms that is unsubstituted or substituted with an aryl group having 6 to 20 carbon atoms, and an organic light emitting device including the same.

Abstract: Provided is a compound of Chemical Formula 1: wherein: each X is independently N or CH, provided that at least one X is N; Y is O or S; each Ar is independently substituted or unsubstituted: C6-60 aryl or C5-60 heteroaryl containing N, O or S; each R1, R2, R3, and R4 independently is hydrogen, deuterium, halogen, cyano, or substituted or unsubstituted: C1-60 alkyl, C1-60 alkoxy, C2-60 alkenyl, C2-60 alkynyl, C3-60 cycloalkyl, C6-60 aryl, or C2-60 heteroaryl containing N, O or S, or two adjacent R4S combine to form a C4-60 aliphatic or aromatic ring; n1, n2, and n3 are each independently 0 or 1, and n4 is 1 to 4, provided that at least one of Ar is substituted with deuterium, or at least one of R1, R2, R3, or R4 is, or is substituted with, one or more deuterium, and an organic light-emitting diode comprising same.

Abstract: Provided is an organic light-emitting device comprising an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, wherein the light-emitting layer comprises a first compound of Chemical Formula 1 and a second compound of Chemical Formula 2: wherein: A is Chemical Formula 1a or 1b: Ar1 and Ar2 are each independently a C6-60 aromatic ring or a C2-60 heteroaromatic ring, and Ar1 and Ar2 are unsubstituted, or substituted with C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; Ar?1 and Ar?2 are each independently substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl; provided that a1+b1+c1+d+e+f is 1 or more; or a2+b2+c2+d+e+f is 1 or more; R?1 and R?2 are each independently hydrogen, deuterium, C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; and r and s are each independently 0 to 7.

Abstract: Provided is an organic light emitting device having improved driving voltage, efficiency and lifetime, the device including a light emitting layer comprising a first compound of Chemical Formula 1 and a second compound of Chemical Formula 2: A is a benzene ring fused with the two pentagonal rings; Ar1 to Ar3 are each independently a substituted or unsubstituted C6-20 aryl or C5-60 heteroaryl containing one or more of N, O and S; provided that at least one of Ar1-Ar3, and R1 is substituted with at least one deuterium, or at least one of R1 is deuterium, and the first compound comprises at least 5 deuteriums; B is a benzene ring fused with the two pentagonal rings; Ar4 is a substituted or unsubstituted C6-60 aryl; and Ar5 is a substituted or unsubstituted C6-60 aryl or C5-50 heteroaryl containing one of N, O and S.

Abstract: Provided is a compound of Chemical Formula 1: wherein: each X is independently N or CH, with the proviso that at least one X is N; Y is O or S; L1 and L2 are each independently a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing at least one heteroatom selected from the group consisting of N, O, and S; Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O, and S; and Ar3 is a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O, and S; and to an organic light emitting device including the same.

Abstract: A heterocyclic compound represented by Chemical Formula 1 or 2, and an organic light emitting device including the same, and the heterocyclic compound which is used as a material of an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: A heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same, and the heterocyclic compound providing improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: Provided is a compound of Chemical Formula 1: wherein: A is a benzene ring: X1 and X2 are each independently O or S; Y1 to Y3 are each independently N or CH, provided that at least one of Y1 to Y3 is N; Ar1 and Ar2 are each independently a substituted or unsubstituted: C6-60 aryl or C2-60 heteroaryl containing at least one of N, O, and S; R1 to R3 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S; and R4 and R5 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S, and an organic light emitting device including the same.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: X is O or S; Y1, Y2 and Y3 are each independently CH or N, provided that at least one is N; L1 and L2 are each independently a direct bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C5-60 heteroarylene containing at least one of N, O and S; and Ar is a substituted or unsubstituted C6-60 aryl, and Ar2 and Ar3 are each independently a substituted or unsubstituted C6-60 aryl or a C5-60 heteroaryl containing at least one of N, O and S, provided that when all of Ar1, Ar2 and Ar3 are a substituted or unsubstituted C6-60 aryl, any one of Ar1, Ar2 and Ar3 is substituted with 4 or more deuteriums; and an organic light emitting device including the same.

Abstract: Provided is a compound of Chemical Formula 1: wherein, in Chemical Formula 1: X1 to X6 are each independently CH or N, with the proviso that at least one of X1 to X6 is N; Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl, with the proviso that at least one of Ar1 to Ar4 is a C6-60 aryl containing deuterium as a substituent; R1 is hydrogen, deuterium, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O, and S; and n is an integer of 0 to 8, and an organic light emitting device including the using same.