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Organic light emitting diodes with structured electrodes

United States Patent

December 4, 2012
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
A cathode that contain nanostructures that extend into the organic layer of an OLED has been described. The cathode can have an array of nanotubes or a layer of nanoclusters extending out from its surface. In another arrangement, the cathode is patterned and etched to form protruding nanostructures using a standard lithographic process. Various methods for fabricating these structures are provided, all of which are compatible with large-scale manufacturing. OLEDs made with these novel electrodes have greatly enhanced electron injection, have good environmental stability.
Mao; Samuel S. (Castro Valley, CA), Liu; Gao (Oakland, CA), Johnson; Stephen G. (Newburyport, MA)
The Regents of The University of California (Oakland, CA)
12/ 297,615
April 26, 2007
STATEMENT OF GOVERNMENTAL SUPPORT The invention described and claimed herein was made in part utilizing funds supplied by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The U.S. Government has certain rights in this invention.