PHOSPHORESCENT MATERIALS

• US 20080261076A1
• Filed: 03/07/2008
• Published: 10/23/2008
• Est. Priority Date: 03/08/2007
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: KWONG, Raymond, XIA, Chuanjun, ALLEYNE, Bert, MA, Bin, BROOKS, Jason
• Granted Patent: US 8,431,243 B2
• Time in Patent Office: Days
• US Class Current: 428/690
• CPC Class Codes: C07F 15/0033 Iridium compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/1037 with sulfur
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: C09K 2211/188 of other metals not provided for in one of the previous groups
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/381 Metal complexes comprising a group IIB metal element, e.g. comprising cadmium, mercury or zinc

Abstract

Phosphorescent materials and devices with high device efficiency, stability, and processibility.

Claims

1. An iridium compound having the formula:

2. The compound of claim 1, wherein the branched alkyl is an isobutyl group.

3. The compound of claim 1, wherein X-Y is acac.

4. The compound of claim 1, selected from the group consisting of:

5. The compound of claim 4, wherein the compound is:

6. A compound including a ligand having the formula:

7. The compound of claim 6, wherein the ligand is coordinated to a metal having an atomic number greater than 40.

8. The compound of claim 6, wherein the metal is Ir.

9. A compound selected from the group consisting of:

10. The compound of claim 9, wherein the compound is:

11. The compound of claim 9, wherein the compound is:

12. The compound of claim 9, wherein the compound is:

13. An organic light emitting device comprising:

an anode;

a cathode; and

an emissive organic layer, disposed between the anode and the cathode, the organic layer further comprising a compound selected from the group consisting of;

14. The device of claim 13, wherein the organic emissive layer further comprises BAlq or

15. The device of claim 13, wherein the compound is:

16. The device of claim 15, wherein the organic emissive layer further comprises

17. The device of claim 13, wherein the compound is:

18. The device of claim 17, wherein the organic emissive layer further comprises

19. The device of claim 13, wherein the compound is:

20. The device of claim 19, wherein the organic emissive layer further comprises BAlq.

21. The device of claim 13, wherein the compound is:

22. The device of claim 21, wherein the organic emissive layer further comprises BAlq.