SBIR Phase I: Novel Chemistry for Low Cost Solar-Grade Silicon

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This Small Business Innovation Research Phase I project aims to commercialize a new technology for purifying silicon for photovoltaic (PV) solar cells using a novel oxi-nitride chemistry and cold crucible induction melting. The process, based on upgrading low-cost metallurgical grade silicon by employing purification strategies that have led to high purity steel products, presents a new approach to refining silicon that eliminates melt-crucible interactions that otherwise limit the choice of chemistry and operational temperature.The proposed technology is projected to result in reduced capital investment, production cost reduction, reduction in electrical energy required; and a major reduction in potential environmentally damaging processes. The new refining process, once successfully commercialized, will play an important role in reducing the cost of silicon-based solar cells that still accounts for over 90% of the PV market.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).