Phosphorescent emitters and host materials with improved stability

• US 9,735,377 B2
• Filed: 12/30/2016
• Issued: 08/15/2017
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Xia, Chuanjun, Yeager, Walter, Lin, Chun, Ma, Bin, Beers, Scott, Tsai, Jui-Yi, Fiordeliso, James, Barron, Edward
• Primary Examiner(s): YAMNITZKY, MARIE ROSE
• Application Number:
  US15/395,470
• Publication Number:
  US 20170110676A1
• Time in Patent Office: 228 Days
• Field of Search: None
• 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 2211/1044 containing two nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/1088 containing oxygen as the only heteroatom
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• 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 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

Iridium complexes with ligands containing twisted aryl groups having extended conjugation (i.e., the twisted aryl is substituted with an additional aryl group) and organic light emitting devices including the same are disclosed. The iridium complexes can be used in organic light emitting devices may provide improved stability color, lifetime and manufacturing.

Claims

1. A compound selected from the group consisting of:

2. The compound of claim 1, wherein the compound is

3. The compound of claim 1, wherein the compound is

4. The compound of claim 1, wherein the compound is

5. The compound of claim 1, wherein the compound is

6. The compound of claim 1, wherein the compound is

7. The compound of claim 1, wherein the compound is

8. A first device comprising an organic light emitting device, said first light emitting device comprising:

an anode;

a cathode; and

an organic layer, disposed between the anode and the cathode, the organic layer comprising a first compound and a second compound,

wherein the second compound has the formula;

9. The device of claim 8, wherein the first compound is selected from the group consisting of:

10. The device of claim 8, wherein the first compound is selected from the group consisting of:

11. The device of claim 8, wherein the first compound is

12. The device of claim 8, wherein the first compound is

13. The device of claim 8, wherein the first compound is

14. The device of claim 8, wherein the first compound is

15. The device of claim 8, wherein the first compound is

16. The device of claim 8, wherein the first compound is