Organometallic complex and organic electroluminescence device using the same

1. An organometallic complex comprising a compound represented by one selected from the group consisting of Formulae 3-6:

2. The organometallic complex of claim 1 , wherein the compound is represented by Formula 3:

3. The organometallic complex of claim 1 , wherein the compound is represented by Formula 4:

4. The organometallic complex of claim 1 , wherein the compound is represented by Formula 5:

5. The organometallic complex of claim 1 , wherein the compound is represented by Formula 6:

6. An organic electroluminescence device having an organic layer interposed between a pair of electrodes, the organic layer comprising the organometallic complex of claim 1 .

7. An organic electroluminescence device, comprising:

a first electrode;

a second electrode; and

an organic layer comprising a light emitting layer comprised of an organometallic complex represented by one of Formulae 3 through 6:

8. The organic electroluminescence device of claim 7 , wherein the organometallic complex is in an amount of 1 to 30 parts by weight based on 100 parts by weight of materials used to form the light emitting layer.

9. The organic electroluminescence device of claim 7 , wherein the organic layer further comprises at least one host selected from the group consisting of one kind of polymer host, a mixture host of one or more kinds of polymer host, a mixture host of a polymer and a small molecule, a small molecule host, and a non-emitting polymer matrix.

10. The organic electroluminescence device of claim 7 , wherein the organic layer further comprises green phosphorescent materials or blue phosphorescent materials.