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Organic electrophosphorescence device having interfacial layers

United States Patent

7,772,761
August 10, 2010
View the Complete Patent at the US Patent & Trademark Office
Techniques are described for forming an organic light emitting diode device with improved device efficiency. Materials having at least one energy level that is similar to those of a phosphorescent light emitting material in the diode are incorporated into the device to directly inject holes or electrons to the light emitting material.
Choulis; Stelios A. (San Jose, CA), Mathai; Mathew (Santa Clara, CA), Choong; Vi-En (San Jose, CA), So; Franky (Gainesville, FL)
Osram Opto Semiconductors GmbH (Regensburg, DE)
11/ 238,888
20070069636
September 28, 2005
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-FC26-04NT41947 awarded by the Department of Energy. The Government may have certain rights in the invention.