Heterocyclic compound and organic light emitting device using same

1. A hetero-cyclic compound represented by the following Chemical Formula 1:

wherein, in Chemical Formula 1,

R 1 is hydrogen; a substituted or unsubstituted C 1 to C 60 alkyl group; a substituted or unsubstituted C 6 to C 60 aryl group; a substituted or unsubstituted C 2 to C 60 heteroaryl group; —P(═O)RR′; or —CN;

R 2 to R 8 are each hydrogen;

Ar 1 is a substituted or unsubstituted C 1 to C 60 alkyl group;

m and n are each independently an integer of 0 to 5; and

R, and R′ are the same as or different from each other, and each independently a substituted or unsubstituted C 6 to C 60 aryl group.

2. The hetero-cyclic compound of claim 1 , wherein the “substituted or unsubstituted” means being substituted with one or more substituents selected from the group consisting of C 1 to C 60 linear or branched alkyl; C 2 to C 60 linear or branched alkenyl; C 2 to C 60 linear or branched alkynyl; C 3 to C 60 monocyclic or polycyclic cycloalkyl; C 2 to C 60 monocyclic or polycyclic heterocycloalkyl; C 6 to C 60 monocyclic or polycyclic aryl; C 2 to C 60 monocyclic or polycyclic heteroaryl; —P(═O)RR′; C 1 to C 20 alkylamine; C 6 to C 60 monocyclic or polycyclic arylamine; and C 2 to C 60 monocyclic or polycyclic heteroarylamine, or being unsubstituted, or being substituted with a substituent linking two or more substituents selected from among the substituents illustrated above, or being unsubstituted.

3. The hetero-cyclic compound of claim 1 , wherein R 1 of Chemical Formula 1 is represented by -(L) p -(Z) q ;

L is a direct bond; a substituted or unsubstituted C 6 to C 60 arylene group; or a substituted or unsubstituted C 2 to C 60 heteroarylene group;

Z is hydrogen; a substituted or unsubstituted C 1 to C 60 alkyl group; a substituted or unsubstituted C 6 to C 60 aryl group; a substituted or unsubstituted C 2 to C 60 heteroaryl group; —CN; or —P(═O)RR′;

R, and R′ are the same as or different from each other, and each independently a substituted or unsubstituted C 6 to C 60 aryl group; and

p and q are an integer of 1 to 4.

4. The hetero-cyclic compound of claim 1 , wherein Ar 1 is an ethyl group.

5. The hetero-cyclic compound of claim 1 , wherein Chemical Formula 1 is represented by the following Chemical Formula 2 or 3:

in Chemical Formulae 2 and 3,

Ar 1 , R 1 to R 8 and n have the same definitions as in Chemical Formula 1.

6. The hetero-cyclic compound of claim 1 , wherein Chemical Formula 1 is represented by any one of the following compounds:

7. 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 hetero-cyclic compound of claim 1 .

8. The organic light emitting device of claim 7 , wherein the organic material layer comprises an electron transfer layer, and the electron transfer layer comprises the hetero-cyclic compound.

9. The organic light emitting device of claim 7 , 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 hetero-cyclic compound.

10. The organic light emitting device of claim 7 , 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.

11. The organic light emitting device of claim 7 , wherein the organic material layer comprises a charge generation layer, and the charge generation layer comprises the hetero-cyclic compound.

12. The organic light emitting device of claim 7 , comprising:

a first electrode;

a first stack provided on the first electrode and comprising a first light emitting layer;

a charge generation layer provided on the first stack;

a second stack provided on the charge generation layer and comprising a second light emitting layer; and

a second electrode provided on the second stack.

13. The organic light emitting device of claim 12 , wherein the charge generation layer comprises the hetero-cyclic compound represented by Chemical Formula 1.