Organometallic compounds for use in electroluminescent devices

• US 20050119485A1
• Filed: 12/03/2004
• Published: 06/02/2005
• Est. Priority Date: 11/06/2002
• Status: Active Grant

• Current Assignee: Cory S. Brown, David B. Knowles, Mark Thompson, Peter I. Djurovich, Raymond Kwong, Robert Walters, Yeh-Jiun Tung
• Original Assignee: Cory S. Brown, David B. Knowles, Mark Thompson, Peter I. Djurovich, Raymond Kwong, Robert Walters, Yeh-Jiun Tung
• Inventors: Knowles, David B., Thompson, Mark E., Kwong, Raymond, Brown, Cory S., Walters, Robert, Tung, Yeh-Jiun, Djurovich, Peter I.
• Granted Patent: US 7,429,426 B2
• Time in Patent Office: Days
• US Class Current: 546/2
• CPC Class Codes: C07F 15/0033 Iridium compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1003 Carbocyclic compounds
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprising an emissive material having the structure:
M is a metal having an atomic weight greater than 40. R₅ is an aromatic group. The emissive material itself is also provided. The emissive material provides an improved stability and efficiency.

Claims

1. An emissive material comprising a ligand having the structure:

2. The emissive material of clam 1 comprising a ligand having the structure:

3. The emissive material of clam 1 comprising a ligand having the structure:

4. The emissive material of clam 1 comprising a ligand having the structure:

5. The emissive material of clam 1 comprising a ligand having the structure:

6. The emissive material of clam 1 comprising a ligand having the structure:

7. The emissive material of clam 1 comprising a ligand having the structure:

8. The emissive material of clam 1 comprising a ligand having the structure:

9. The emissive material of clam 1 comprising a ligand having the structure:

10. The emissive material of clam 1 comprising a ligand having the structure:

11. The emissive material of clam 1 comprising a ligand having the structure:

12. The emissive material of clam 1 comprising a ligand having the structure:

13. The emissive material of clam 1 comprising a ligand having the structure:

14. The emissive material of clam 1 comprising a ligand having the structure:

15. The emissive material of clam 1 comprising a ligand having the structure:

16. The emissive material of clam 1 comprising a ligand having the structure:

17. The emissive material of clam 1 comprising a ligand having the structure:

18. The emissive material of clam 1 comprising a ligand having the structure:

19. The emissive material of clam 1 comprising a ligand having the structure:

20. An emissive material comprising the structure:

21. The emissive material of clam 20 comprising the structure:

22. The emissive material of clam 20 comprising the structure:

23. The emissive material of clam 20 comprising the structure:

24. The emissive material of clam 20 comprising the structure:

25. The emissive material of clam 20 comprising the structure:

26. The emissive material of clam 20 comprising the structure:

27. The emissive material of clam 20 comprising the structure:

28. The emissive material of clam 20 comprising the structure:

29. The emissive material of clam 20 comprising the structure:

30. The emissive material of clam 20 comprising the structure:

31. The emissive material of clam 20 comprising the structure:

32. The emissive material of clam 20 comprising the structure:

33. The emissive material of clam 20 comprising the structure:

34. The emissive material of clam 20 comprising the structure:

35. The emissive material of clam 20 comprising the structure:

36. The emissive material of clam 20 comprising the structure:

37. The emissive material of clam 20 comprising the structure:

38. The emissive material of clam 20 comprising the structure: