Method for the Manufacture of Photovoltaic Grade Silicon Metal

摘要

Disclosed is method for the production of silicon metal of a purity sufficient for the manufacture of commercial grade photovoltaic devices, by first reacting liquid silicon tetrachloride with molten sodium metal, and then by processing the reaction product to remove from the silicon metal, those reaction products which would be detrimental to the performance of the produced silicon metal in commercial grade photovoltaic devices used to generate electric power for commercial sale.