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Methods and Apparatuses for Manufacturing Cast Silicon From Seed Crystals

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Methods and apparatuses are provided for casting silicon for photovoltaic cells and other applications. With these methods, an ingot can be grown that is low in carbon and whose crystal growth is controlled to increase the cross-sectional area of seeded material during casting.
Stoddard, Nathan G. (Gettysburg, PA), Wu, Bei (Frederick, MD), Clark, Roger F. (Knoxville, MD), Cliber, James A. (Emmitsburg, MD)
BP Corproation North America Inc. (Warrenville IL)
12/ 669,504
July 16, 2008
[0002] This application was made with U.S. Government support under Subcontract No.: ZAZ-6-33628-11 under prime contract with the National Renewable Energy Laboratory awarded by the Department of Energy. The Government has certain rights in this invention.