Phosphorescent materials containing iridium complexes

• US 8,431,243 B2
• Filed: 03/07/2008
• Issued: 04/30/2013
• Est. Priority Date: 03/08/2007
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Kwong, Raymond, Ma, Bin, Xia, Chuanjun, Alleyne, Bert, Brooks, Jason
• Primary Examiner(s): Chriss, Jennifer A
• Assistant Examiner(s): Bohaty, Andrew K
• Application Number:
  US12/044,234
• Publication Number:
  US 20080261076A1
• Time in Patent Office: 1,880 Days
• Field of Search: None
• 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 comprising iridium complexes of Formula I are provided. Compounds of Formula I are red emitters, and OLED devices incorporating these compounds have improved properties such as higher efficiency and stability.

Claims

1. A compound, which is:

2. 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, which is;

3. The device of claim 2, wherein the organic emissive layer further comprises BAlq or