| US 7,579,090 B2 | ||
| Organic element for electroluminescent devices | ||
| Christopher T. Brown, Rochester, N.Y. (US); Joseph C. Deaton, Rochester, N.Y. (US); David W. Place, Webster, N.Y. (US); Marina E. Kondakova, Kendall, N.Y. (US); and Shouquan Huo, Webster, N.Y. (US) | ||
| Assigned to Eastman Kodak Company, Rochester, N.Y. (US) | ||
| Filed on Dec. 17, 2004, as Appl. No. 11/16,134. | ||
| Application 11/016134 is a continuation in part of application No. 10/945337, filed on Sep. 20, 2004, abandoned. | ||
| Prior Publication US 2006/0063031 A1, Mar. 23, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01L 51/54 (2006.01); C09K 11/06 (2006.01) | ||
| U.S. Cl. 428—690 [428/917; 313/504; 313/506; 257/98] | 44 Claims |
| 1. An organic light emitting device containing a cathode, an anode, and having located there-between a light emitting layer
comprising:
A) co-hosts including
a) a hole transporting compound, and
b) an oxinoid compound, wherein the oxinoid is an aluminum bis-(2-substituted)oxinoid compound bearing a third ligand linked
to aluminum through an oxy moiety comprising an oxygen atom linked to an aromatic ring bearing at least one substituent at
an ortho position; and
B) a red or orange light emitting phosphorescent compound wherein the phosphorescent compound has a triplet energy smaller
than that of the co-hosts.
|