Method for producing solar-cell-grade silicon

Details Method for producing solar-cell-grade silicon Method for producing solar-cell-grade silicon

C - Chemistry, Metallurgy

01

B

23/325

C01B 33/02 (2006.01) C01B 33/025 (2006.01)

Patent

CA 1136382

ABSTRACT OF THE DISCLOSURE Silica is reduced in a direct arc reactor by activated carbon or carbon black having relatively low boron (B) and phosphorous (P) contents to produce silicon having similarly low B and P contents and suitable for use in photovoltaic cells for converting solar energy directly to electrical energy.

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