Phenylcarbazole-based compounds and fluorene-based compounds and organic light emitting device and flat panel display device comprising the same

1. An organic light emitting device comprising:

a substrate;

a first electrode;

a second electrode, one of the first electrode and the second electrode being a reflective electrode, the other being a semitransparent or transparent electrode; and

an organic layer interposed between the first electrode and the second electrode, the organic layer comprising an emission layer,

the organic layer comprising a layer comprising a compounds represented by Formula 3, resonance occurring between the first electrode and the second electrode during an operation of the organic light emitting device:

where R 6 , R 7 and R 8 are each independently one selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 1 -C 30 alkoxy group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 6 -C 30 aryloxy group, a substituted or unsubstituted C 4 -C 30 hetero ring, a substituted or unsubstituted C 5 -C 30 polycyclic condensed ring, a hydroxy group, a cyano group, and a substituted or unsubstituted amino group, wherein two or more of R 6 , R 7 and R 8 can be optionally bound with one another to form a saturated or unsaturated carbon ring;

Ar 3 is a biphenyl group;

each Y is independently one selected from the group consisting of a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, and a substituted or unsubstituted C 4 -C 30 hetero ring; and

each n of the Yn between the carbazole and the nitrogen is 1, and n of the Yn between the fluorene and the nitrogen is 0.

2. The organic light emitting device of claim 1 , wherein R 6 and R 7 are each a methyl group and R 8 is a phenyl.

3. The organic light emitting device of claim 1 , wherein the compound represented by Formula 3 has the following chemical structure:

4. The organic light emitting device of claim 1 , wherein the first electrode is formed on the substrate and is a reflective electrode, the second electrode is a semitransparent or transparent electrode, and light generated in the organic layer is extracted through the second electrode.

5. The organic light emitting device of claim 1 , wherein the layer comprising the compound represented by Formula 3 is one of a hole injection layer, a hole transport layer, and a single layer having hole injecting and transporting properties.

6. The organic light emitting device of claim 1 , wherein the layer comprising the compound represented by Formula 3 is a hole injection layer.

7. The organic light emitting device of claim 6 , wherein the emission layer comprises a red emission region, and the thickness of a first region of the hole injection layer formed under the red emission region is in the range of 1,600 to 2,200 Å.

8. The organic light emitting device of claim 6 , wherein the emission layer comprises a green emission region, and the thickness of a second region of the hole injection layer formed under the green emission region is in the range of 1,400 to 1,800 Å.

9. The organic light emitting device of claim 6 , wherein the emission layer comprises a blue emission region, and the thickness of a third region of the hole injection layer formed under the blue emission region is in the range of 1,000 to 1,400 Å.

10. The organic light emitting device of claim 6 , wherein the emission layer comprises a red emission region, a blue emission region and a green emission region;

the hole injection layer comprises a first region formed under the red emission region, a second region formed under the green emission region and a third region formed under the blue emission region; and

the thickness of the first region is in the range of 1,600 to 2,200 Å, the thickness of the second region is in the range of 1,400 to 1,800 Å, and the thickness of the third region is in the range of 1,000 to 1,400 Å.

11. The organic light emitting device of claim 6 , wherein the organic layer further comprises a hole transport layer.

12. The organic light emitting device of claim 11 , wherein the emission layer comprises a red emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the red emission region is in the range of 2,000 to 2,400 Å.

13. The organic light emitting device of claim 12 , wherein the thickness of the region of the hole injection layer formed under the red emission region is in the range of 1,600 to 2,200 Å.

14. The organic light emitting device of claim 11 , wherein the emission layer comprises a green emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the green emission region is in the range of 1,600 to 2,000 Å.

15. The organic light emitting device of claim 14 , wherein the thickness of the region of the hole injection layer formed under the green emission region is in the range of 1,400 to 1,800 Å.

16. The organic light emitting device of claim 11 , wherein the emission layer comprises a blue emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the blue emission region is in the range of 1,200 to 1,600 Å.

17. The organic light emitting device of claim 16 , wherein the thickness of the region of the hole injection layer formed under the blue emission region is in the range of 1,000 to 1,400 Å.

18. A flat panel display device comprising the organic light emitting device of claim 1 .

19. The flat panel display of claim 18 , wherein the first electrode of the organic light emitting device is electrically connected to a source electrode or a drain electrode of a thin film transistor.

20. An organic light emitting device comprising:

a substrate;

a first electrode;

a second electrode, one of the first electrode and the second electrode being a reflective electrode, the other being a semitransparent or transparent electrode; and

an organic layer interposed between the first electrode and the second electrode, the organic layer comprising:

an emission layer comprising at least one of a red emission region, a green emission region and a blue emission region; and

a layer comprising a compound represented by Formula 3, the layer having at least one of a first region formed under the red emission region, a second region formed under the green emission region and a third region formed under the blue emission region, the thickness of the first region being in the range of 1,600 to 2,200 Å, the thickness of the second region being in the range of 1,400 to 1,800 Å, the thickness of the third region being in the range of 1,000 to 1,400 Å, resonance occurring between the first electrode and the second electrode during an operation of the organic light emitting device:

where R 6 , R 7 and R 8 are each independently one selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 1 -C 30 alkoxy group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 6 -C 30 aryloxy group, a substituted or unsubstituted C 4 -C 30 hetero ring, a substituted or unsubstituted C 5 -C 30 polycyclic condensed ring, a hydroxy group, a cyano group, and a substituted or unsubstituted amino group, wherein two or more of R 6 , R 7 and R 8 can be optionally bound with one another to form a saturated or unsaturated carbon ring;

Ar 3 is a biphenyl group;

each Y is independently one selected from the group consisting of a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, and a substituted or unsubstituted C 4 -C 30 hetero ring; and

each n of the Yn between the carbazole and the nitrogen is 1, and n of the Yn between the fluorene and the nitrogen is 0.

21. The organic light emitting device of claim 20 , wherein R 6 and R 7 are each a methyl group and R 8 is a phenyl.

22. The organic light emitting device of claim 20 , wherein the compound represented by Formula 3 has the following chemical structure:

23. The organic light emitting device of claim 20 , wherein the first electrode is formed on the substrate and is a reflective electrode, the second electrode is a semitransparent or transparent electrode, and light generated in the organic layer is extracted through the second electrode.

24. The organic light emitting device of claim 20 , wherein the layer comprising the compound represented by Formula 3 is one of a hole injection layer, a hole transport layer, and a single layer having hole injecting and transporting properties.

25. The organic light emitting device of claim 20 , wherein the layer comprising the compound represented by Formula 3 is a hole injection layer.

26. The organic light emitting device of claim 25 , wherein the organic layer further comprises a hole transport layer.

27. The organic light emitting device of claim 26 , wherein the emission layer comprises a red emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the red emission region is in the range of 2,000 to 2,400 Å.

28. The organic light emitting device of claim 26 , wherein the emission layer comprises a green emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the green emission region is in the range of 1,600 to 2,000 Å.

29. The organic light emitting device of claim 26 , wherein the emission layer comprises a blue emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the blue emission region is in the range of 1,200 to 1,600 Å.

30. A flat panel display device comprising the organic light emitting device of claim 20 .

31. The flat panel display of claim 30 , wherein the first electrode of the organic light emitting device is electrically connected to a source electrode or a drain electrode of a thin film transistor.

32. An organic light emitting device comprising:

a substrate;

a first electrode;

a second electrode, one of the first electrode and the second electrode being a reflective electrode, the other being a semitransparent or transparent electrode; and

an organic layer interposed between the first electrode and the second electrode, the organic layer comprising:

an emission layer comprising a red emission region, a green emission region and a blue emission region; and

a layer comprising a compound represented by Formula 3, the layer having a first region formed under the red emission region, a second region formed under the green emission region and a third region formed under the blue emission region, the thickness of the first region being in the range of 1,600 to 2,200 Å, the thickness of the second region being in the range of 1,400 to 1,800 Å, the thickness of the third region being in the range of 1,000 to 1,400 Å, resonance occurring between the first electrode and the second electrode during an operation of the organic light emitting device:

where R 6 , R 7 and R 8 are each independently one selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 1 -C 30 alkoxy group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 6 -C 30 aryloxy group, a substituted or unsubstituted C 4 -C 30 hetero ring, a substituted or unsubstituted C 5 -C 30 polycyclic condensed ring, a hydroxy group, a cyano group, and a substituted or unsubstituted amino group, wherein two or more of R 6 , R 7 and R 8 can be optionally bound with one another to form a saturated or unsaturated carbon ring;

Ar 3 is a biphenyl group;

each Y is independently one selected from the group consisting of a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, and a substituted or unsubstituted C 4 -C 30 hetero ring; and

each n of the Yn between the carbazole and the nitrogen is 1, and n of the Yn between the fluorene and the nitrogen is 0.

33. The organic light emitting device of claim 32 , wherein R 6 and R 7 are each a methyl group and R 8 is a phenyl.

34. The organic light emitting device of claim 32 , wherein the compound represented by Formula 3 has the following chemical structure:

35. The organic light emitting device of claim 32 , wherein the first electrode is formed on the substrate and is a reflective electrode, the second electrode is a semitransparent or transparent electrode, and light generated in the organic layer is extracted through the second electrode.

36. The organic light emitting device of claim 32 , wherein the layer comprising the compound represented by Formula 3 is one of a hole injection layer, a hole transport layer, and a single layer having hole injecting and transporting properties.

37. The organic light emitting device of claim 32 , wherein the layer comprising the compound represented by Formula 3 is a hole injection layer.

38. The organic light emitting device of claim 37 , wherein the organic layer further comprises a hole transport layer.

39. The organic light emitting device of claim 38 , wherein the emission layer comprises a red emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the red emission region is in the range of 2,000 to 2,400 Å.

40. The organic light emitting device of claim 38 , wherein the emission layer comprises a green emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the green emission region is in the range of 1,600 to 2,000 Å.

41. The organic light emitting device of claim 38 , wherein the emission layer comprises a blue emission region, and the total thickness of a region of the hole transport layer and the hole injection layer formed under the blue emission region is in the range of 1,200 to 1,600 Å.

42. A flat panel display device comprising the organic light emitting device of claim 32 .

43. The flat panel display of claim 42 , wherein the first electrode of the organic light emitting device is electrically connected to a source electrode or a drain electrode of a thin film transistor.