Compound and organic light emitting device comprising the same
A novel compound of the following Chemical Formula 1, and an organic light emitting device comprising the same.
1. A compound of the following Chemical Formulas 1-1 to 1-7:
wherein, in the Chemical Formulas 1-1 to 1-7,
Y 1 is O or S,
L 1 and L 2 are each independently a single bond or phenylene,
X 1 to X 3 are each independently N or CH, provided that at least one of them is N,
Ar 1 and Ar 2 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 5-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S,
Y 2 is O or S,
Z 1 to Z 4 are each independently N or CH, provided that at least two of them are N,
Ar 3 is hydrogen; a substituted or unsubstituted C 1-60 alkyl; or a substituted or unsubstituted C 6-60 aryl, and
the group of
is any one selected from the following groups:
2. The compound of claim 1 , wherein Ar 1 and Ar 2 are each independently phenyl; biphenyl; dibenzofuranyl; dibenzothiophenyl; carbazolyl; or carbazolyl substituted with phenyl.
3. The compound of claim 1 , wherein Ar 3 is phenyl.
4. The compound of claim 1 , wherein the compound of Chemical Formulas 1-1 to 1-7 is any one selected from the group consisting of the following compounds:
5. An organic light emitting device comprising: a first electrode; a second electrode that is provided to face the first electrode; and one or more organic material layers that are provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers include the compound according to claim 1 .
6. The organic light emitting device of claim 5 , wherein the organic material layers include a light emitting layer, and the light emitting layer includes two or more types of host materials.
7. The organic light emitting device of claim 6 , wherein the two or more types of host materials include the compound.