Heterocyclic compound and organic light emitting element comprising same
The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
1 . A heterocyclic compound represented by the following Chemical Formula 6:
in Chemical Formula 6,
wherein
is represented by Chemical Formula 9,
X1 is CR11 or N, X2 is CR12 or N, X3 is CR13 or N, and X5 is CR15 or N,
one or more of X1, X3 and X5 are N,
R11 to R15 are the same as or different from each other, and each is independently selected from the group consisting of hydrogen, deuterium, a phenyl group, a biphenylyl group, a naphthyl group, a dimethylfluorenyl group, a dibenzofuran group, and a dibenzothiophene group,
L is a direct bond, or a phenylene group, a is an integer of 1 to 3, and when a is 2 or greater, Ls are the same as or different from each other; and
R9 and R10 are the same as or different from each other, and each is independently selected from the group consisting of hydrogen and deuterium,
R1 to R8 are the same as or different from each other, and each is independently selected from the group consisting of hydrogen, deuterium, a phenyl group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, and a carbazole group substituted with a phenyl group, or bond to each other to form an indole ring unsubstituted or substituted with a phenyl group, a benzothiophene ring, a benzofuran ring, or an indene ring unsubstituted or substituted with a methyl group, b and c are each an integer of 1 to 3, and when b is 2 or greater, R9s are the same as or different from each other and when c is 2 or greater, R10s are the same as or different from each other,
wherein when R1 to R8 are hydrogen, or at least one of R1 to R8 is a carbazole group, or a carbazole group substituted with a phenyl group, then one of R12 and R14 is a biphenylyl group, a naphthyl group, a dimethylfluorenyl group, a dibenzofuran group, or a dibenzothiophene group.
2 . The heterocyclic compound of claim 1 , wherein Chemical Formula 9 is selected from among the following structural formulae:
in the structural formulae, R11 to R15 are the same as or different from each other, and each is independently selected from the group consisting of hydrogen, deuterium, a phenyl group, a biphenylyl group, a naphthyl group, a dimethylfluorenyl group, a dibenzofuran group, and a dibenzothiophene group.
3 . The heterocyclic compound of claim 1 , wherein Chemical Formula 6 is represented by any one of the following compounds:
4 . An organic light emitting device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
one or more organic material layers provided between the first electrode and the second electrode,
wherein one or more layers of the organic material layers comprise the heterocyclic compound of claim 1 .
5 . The organic light emitting device of claim 4 , wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises the heterocyclic compound.
6 . The organic light emitting device of claim 4 , wherein the organic material layer comprises a light emitting layer, the light emitting layer comprises a host material, and the host material comprises the heterocyclic compound.
7 . The organic light emitting device of claim 4 , wherein the organic material layer comprises an electron injection layer or an electron transfer layer, and the electron transfer layer or the electron injection layer comprises the heterocyclic compound.
8 . The organic light emitting device of claim 4 , wherein the organic material layer comprises an electron blocking layer or a hole blocking layer, and the electron blocking layer or the hole blocking layer comprises the heterocyclic compound.
9 . The organic light emitting device of claim 4 , further comprising one, two or more layers selected from the group consisting of a light emitting layer, a hole injection layer, a hole transfer layer, an electron injection layer, an electron transfer layer, an electron blocking layer and a hole blocking layer.