Process for making low-cost silicon for solar cells is further improved. Silane product recycled to feed stripper column converts some of heavy impurities to volatile ones that pass off at top of column with light wastes. Impurities--chlorides of arsenic, phosphorus, and boron-would otherwise be carried to subsequent distillations where they would be difficult to remove. Since only a small amount of silane is recycled, silicon production efficiency remains high.


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    Titel :

    Removing Chlorides From Metallurgical-Grade Silicon


    Beteiligte:
    Breneman, W. C. (Autor:in) / Coleman, L. M. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1982-12-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Upgrading Metallurgical-Grade Silicon

    Woerner, L. M. / Moore, E. B. | NTRS | 1985


    Solar Cells From Metallurgical-Grade Silicon

    Daiello, R. V. / Robinson, P. H. | NTRS | 1982



    Epitaxial solar cells on metallurgical grade silicon substrates

    Robinson, P. H. / Daiello, R. V. / Richman, D. | NTRS | 1980