Closed-loop process produces semiconductor-grade silicon. Metallurgical-grade silicon converted to ultrapure silicon by reacting with hydrogen and silicon tetrahalide to form trihalosilane, purifying this intermediate and again decomposing to high purity silicon in third stage. Heterogeneously and homogeneously nucleated polycrystalline silicon used in semiconductor device applications and in silicon photovoltaic solar cell fabrication.


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    Titel :

    Upgrading Metallurgical-Grade Silicon


    Beteiligte:
    Woerner, L. M. (Autor:in) / Moore, E. B. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1985



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Solar Cells From Metallurgical-Grade Silicon

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


    Removing Chlorides From Metallurgical-Grade Silicon

    Breneman, W. C. / Coleman, L. M. | NTRS | 1982