Progress in Solarex Crystalline Silicon PVMaT Program

    Research output: Contribution to conferencePaper


    The objectives of this NREL sponsored Photovoltaic Manufacturing Technology (PVMaT) Program are to advance Solarex's cast polycrystalline silicon manufacturing technology, reduce module production cost in half, increase module performance and expand Solarex's commercial production capacity by a factor of three. To meet these objectives Solarex has: 1) Modified the casting process and stations togrow larger ingots; 2) Developed wire saws to cut wafers on as little as 400 centers; 3) Developed a laboratory process to increase cell efficiencies to 15% using back surface fields, mechanical texturing and gettering; 4) Modified the casting, wires saw and cell processes in order to fabricate larger wafers and cells; 5) Improved the automated assembly of modules, reducing laborrequirements and increasing throughput; 6) Developed a frameless module with a lower cost backsheet and a simple, low cost electrical termination system; and 7) Determined the stress levels leading to wafer breakage and designed equipment for automated handling of thin wafers.
    Original languageAmerican English
    Number of pages5
    StatePublished - 1996
    EventTwenty Fifth IEEE Photovoltaic Specialists Conference - Washington, D.C.
    Duration: 13 May 199617 May 1996


    ConferenceTwenty Fifth IEEE Photovoltaic Specialists Conference
    CityWashington, D.C.

    Bibliographical note

    Work performed by Solarex, Frederick, Maryland and the university of Texas at Arlington, Fort Worth, Texas

    NREL Publication Number

    • NREL/CP-22516


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