Organic component

• US 9,112,175 B2
• Filed: 12/21/2006
• Issued: 08/18/2015
• Est. Priority Date: 12/21/2005
• Status: Active Grant

• Current Assignee: Novaled AG
• Original Assignee: Novaled AG
• Inventors: Murano, Sven, Birnstock, Jan, Werner, Ansgar, Vehse, Martin, Hofmann, Michael
• Primary Examiner(s): Mai, Anh
• Assistant Examiner(s): FEATHERLY, HANA SANEI
• Application Number:
  US12/158,482
• Publication Number:
  US 20090009071A1
• Time in Patent Office: 3,162 Days
• Field of Search: 313498-512
• US Class Current: 1/1
• CPC Class Codes: H10K 50/155 comprising dopants
• CPC Class Codes: H10K 50/165 comprising dopants
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/171 Electron injection layers

Abstract

The invention relates to an organic component, in particular a light-emitting organic component, having an electrode (1; 2) and a counter electrode (2; 1) and also an arrangement of organic layers (3) which is arranged between the electrode (1; 2) and the counterelectrode (2; 1) and which is in electrical contact with the electrode (1; 2) and the counterelectrode (2; 1), the arrangement of organic layers (3) comprising charge carrier transport layers (4, 8) for transporting charge carriers injected from the electrode (1; 2) and from the counterelectrode (2; 1) into the arrangement of organic layers (3), and with an injection layer (5; 9) made from a molecular doping material being formed in the arrangement of organic layers (3) between the electrode (1; 2) and a charge carrier transport layer (4; 8) arranged opposite to the electrode (1; 2), which injection layer is in contact with the charge carrier transport layer (4; 8) arranged opposite to the electrode (1; 2), the molecular doping material having a molecular weight of at least 300 g/mol.

Claims

1. An organic component comprising an electrode, a counterelectrode, and an arrangement of organic layers, wherein the arrangement of organic layers is arranged between the electrode and the counterelectrode, wherein the arrangement of organic layers is in electrical contact with the electrode and the counterelectrode, and wherein the arrangement of organic layers comprises one or more charge carrier transport layers that transport charge carriers injected from the electrode and the counterelectrode into the arrangement of organic layers, wherein

the arrangement of organic layers comprises a first injection layer, wherein the first injection layer consists of a first molecular material that is suitable for doping charge carrier transport layers, wherein the first injection layer is arranged between the electrode and a charge carrier transport layer arranged opposite to the electrode, wherein the first injection layer is in contact with the charge carrier transport layer arranged opposite to the electrode, and

the first molecular material has a molecular weight of at least 300 g/mol, and wherein the first molecular material is a p-type material,

the p-type material has a reduction potential which, with respect to Fc/Fc⁺, is greater than or equal to about 0 V, the electrode is an anode, and the charge carrier transport layer arranged opposite to the anode is a hole transport layer,

wherein the counterelectrode is a cathode, and

the arrangement of organic layers comprises a second injection layer, wherein the second injection layer consists of a second molecular material of the n type that is suitable for doping charge carrier transport layers, wherein the second injection layer is arranged between the cathode and an electron transport layer arranged opposite to the cathode, wherein the second injection layer is in contact with the electron transport layer arranged opposite to the cathode, and wherein the second molecular material of the n-type has a molecular weight of at least 300 g/mol.

2. The organic component according to claim 1, wherein the charge carrier transport layer arranged opposite to the electrode is a doped charge carrier transport layer.

3. The organic component according to claim 2, wherein the charge carrier transport layer arranged opposite to the electrode is doped with the first molecular material.

4. The organic component according to claim 1, wherein the charge carrier transport layer arranged opposite to the counterelectrode is a doped charge carrier transport layer.

5. The organic component according to claim 4, wherein the charge carrier transport layer arranged opposite to the counterelectrode is doped with the second molecular material.

6. The organic component according to claim 1, wherein the first injection layer has a thickness of between about 0.1 nm and about 100 nm.

7. The organic component according to claim 1, wherein the second injection layer has a thickness of between about 0.1 nm and about 100 nm.

8. The organic component according to claim 1, wherein the first injection layer is in contact with the electrode.

9. The organic component according to claim 1, wherein the organic component comprises a metal layer, wherein the metal layer is in contact with the electrode and the first injection layer, and wherein the metal layer is arranged between the electrode and the first injection layer.

10. The organic component according to claim 1, wherein the second injection layer is in contact with the counterelectrode.

11. The organic component according to claim 1, wherein the component comprises a second metal layer, wherein the second metal layer is in contact with the counterelectrode and the second injection layer, and wherein the second metal layer is arranged between the counterelectrode and the second injection layer.

12. The organic component according to claim 1, wherein one or more of the organic layers in the arrangement of organic layers comprise vacuum evaporated layers.

13. The organic component according claim 1, wherein one or more of the organic layers in the arrangement of organic layers comprise polymer layers.

14. The organic component according to claim 1, wherein the first molecular material or the second molecular material has a minimum evaporation temperature of at least 100°

C.

15. The organic component according to claim 1, wherein, for the first molecular material or the second molecular material, the difference between the evaporation temperature and the decomposition temperature is at least 20°

C.

16. The organic component according to claim 1, wherein the first molecular material of the p-type has a reduction potential which, with respect to Fc/Fc⁺, is greater than or equal to about 0.18 V.

17. The organic component according to claim 1, wherein the second molecular material of the n-type has an oxidation potential which, with respect to Fc/Fc⁺, is less than or equal to about −

1.5 V.

18. The organic component according to claim 1, wherein the arrangement of organic layers comprises a light-emitting region.

19. The organic component according to claim 18, wherein the light-emitting organic component is top-emitting.

20. The organic component according to claim 18, wherein the light-emitting organic component is bottom-emitting.

21. The organic component according to claim 18, wherein the light-emitting organic component is transparent.

22. The organic component according to claim 1, wherein the first injection layer has a thickness of between about 0.5 nm and about 10 nm.

23. The organic component according to claim 1, wherein the second injection layer has a thickness of between about 0.5 nm and about 10 nm.

24. The organic component according to claim 1, wherein the first molecular material or the second molecular material has a minimum evaporation temperature of at least 140°

C.

25. The organic component according to claim 1, wherein the first molecular material or the second molecular material has a minimum evaporation temperature of at least 160°

C.

26. The organic component according to claim 1, wherein, for the first molecular material or the second molecular material, the difference between the evaporation temperature and the decomposition temperature is at least 40°

C.

27. The organic component according to claim 1, wherein, for the first molecular material or the second molecular material, the difference between the evaporation temperature and the decomposition temperature is at least 60°

C.

28. The organic component according to claim 1, wherein the first molecular material of the p-type has a reduction potential which, with respect to Fc/Fc⁺, is greater than or equal to about 0.24 V.

29. The organic component according to claim 1, wherein the first molecular material of the n-type has an oxidation potential which, with respect to Fc/Fc⁺, is less than or equal to about −

2.2 V.

30. The organic component according to claim 1, wherein the second molecular material of the n-type has an oxidation potential, which with respect to Fc/Fc⁺, is less than or equal to about −

2.0 V.

31. The organic component according to claim 1, wherein the second molecular material of the n-type has an oxidation potential, which with respect to Fc/Fc⁺, is less than or equal to about −

2.2 V.