Heterocyclic compounds and organic light emitting device using the same

1. A compound selected from compounds of the following Formulas 2 to 5:

wherein in Formulas 2 to 5 above:

X 1 is O or S;

R 1 is hydrogen or a substituted or unsubstituted C 1-60 alkyl;

L 1 and L 2 are each independently a direct bond or

Y 1 , Y 2 , and Y 3 are each independently N or CR 2 , provided that at least one of Y 1 , Y 2 , and Y 3 is N;

R 2 is hydrogen or a substituted or unsubstituted C 1-60 alkyl;

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 of N, O, and S;

n is 1 or 2; and

Het is any one substituent selected from the group consisting of the following formulas:

B is O or S;

in Formulas [1-1] and [1-2], Z 1 , Z 2 , Z 3 , and Z 4 are each independently N or CH, provided that at least one of Z 1 , Z 2 , Z 3 , and Z 4 in each formula is N, in Formulas [1-7] to [1-18], Z 1 , Z 2 and Z 3 are N, and in Formula [1-19], Z 1 , Z 2 , Z 3 , and Z 4 are each independently N or CH, provided that one of Z 1 , Z 2 , Z 3 , and Z 4 is N;

1 is independently 1 or 2, and

wherein each R 3 in Formulas [1-1], [1-2] and [1-7] to [1-22] is independently hydrogen, a substituted or unsubstituted C 1-60 alkyl, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 5-60 heteroaryl containing at least one of N, O, and S.

2. The compound of claim 1 , wherein in Formulas 2, 3 and 5, Het is any one substituent selected from the group consisting of the following formulas:

3. The compound of claim 1 , wherein the substituent of

in Formulas 2 to 5 is any one substituent selected from the group consisting of the following formulas:

4. The compound of claim 1 , wherein R 1 is hydrogen or a substituted or unsubstituted C 1-10 alkyl.

5. The compound of claim 1 wherein in Formulas 2, 3 and 5, R 3 is hydrogen or any one substituent selected from the group consisting of the following formulas:

6. The compound of claim 1 , wherein the compound of Formulas 2 to 5 is any one compound selected from the group consisting of compounds of the following formulas:

7. An organic light emitting device comprising:

a first electrode:

a second electrode provided at a side opposite to the first electrode; and

at least one organic material layer provided between the first electrode and the second electrode,

wherein the at east one organic material layer comprises the compound of claim 1 .

8. The organic light emitting device of claim 7 , wherein the organic material layer comprising said compound is a light emitting layer.

9. The organic light emitting device of claim 8 , wherein the compound is a host material in the light emitting layer.

10. The organic light emitting device of claim 9 , wherein the light emitting layer further comprises a dopant material.

11. The organic light emitting device of claim 7 , wherein the organic material layer is an electron injection layer, an electron transport layer, or a layer simultaneously performing electron injection and electron transport.