07537844 is referenced by 43 patents and cites 83 patents.

Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L2MX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.

Title
Organometallic complexes as phosphorescent emitters in organic leds
Application Number
11/879379
Publication Number
7537844 (B2)
Application Date
July 16, 2007
Publication Date
May 26, 2009
Inventor
Paul E Burrows
Kennewick
WA, US
Marc A Baldo
Princeton
NJ, US
Stephen R Forrest
Princeton
NJ, US
Feras Abdel Razzaq
Los Angeles
CA, US
Raymond Kwong
Plainsboro
NJ, US
Drew Murphy
Lakewood
CA, US
Sergey Lamansky
Camarillo
CA, US
Peter Djurovic
Long Beach
CA, US
Mark E Thompson
Anaheim
CA, US
Agent
Kenyon & Kenyon
Assignee
The University of Southern California
CA, US
The Trustees of Princeton University
NJ, US
IPC
H01L 51/54
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