Heterocyclic compound and organic light emitting device comprising same
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.
1. A compound represented by Chemical Formula 1-1:
wherein in Chemical Formula 1-1,
X is each independently N or CH, and at least one of X is N,
n is an integer of 1 to 3, and m is 0,
R 1 and R 2 are each independently a substituted or unsubstituted C 6-10 aryl,
L is a substituted or unsubstituted C 6-60 arylene, and
Ar is a substituted or unsubstituted C 5-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S, or tri(C 6-60 aryl)silyl.
2. The compound of claim 1 , wherein n is 1 or 2.
3. The compound of claim 1 , wherein R 1 is phenyl.
4. The compound of claim 1 , wherein all of X are N.
5. The compound of claim 1 , wherein L is phenylene.
6. The compound of claim 1 , wherein Ar is any one selected from the group consisting of:
7. The compound of claim 1 , wherein the compound represented by Chemical Formula 1-1 is any one selected from the group consisting of the following:
8. 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 a compound of claim 1 .