Amorphous Silicon Alloy Solar Cells and Modules - Opportunities and Challenges

    Research output: Contribution to conferencePaper


    The low material cost and proven manufacturability of amorphous silicon (a-Si) alloy solar panels make them ideally suited for low-cost terrestrial application. a-Si alloy solar panels have been commercially available for more than a decade for applications ranging from small calculators to large-scale grid-connected power systems. Extensive R&D efforts have resulted in a significant improvementin stable cell and module efficiencies with the achievement of 11.8% cell efficiency and 10.2% module efficiency using a spectral-splitting triple-bandgap, triple-cell approach. Further gains in efficiency are expected through an improved understanding of plasma chemistry and growth kinetics. Large-scale commercialization programs are underway, with proposed expansion of annual productioncapacities exceeding 25 MW to take place within the next one year. This will make a-Si alloy the dominant photovoltaic technology. In this document, I shall discuss the progress in science, technology and commercialization of a-Si alloy photovoltaics with special emphasis on the opportunities and the challenges that exist.
    Original languageAmerican English
    Number of pages6
    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 United Solar Systems Corp., Troy, Michigan

    NREL Publication Number

    • NREL/CP-22438


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