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    Photovoltaics manufacturing
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    News

    Photovoltaics manufacturing

    Capillary conducting paths, wafer-thin layers and micrometer precise drillings: The success of solar energy is determined by the tiniest of things, which
    Veröffentlicht
    12. Dezember 2008
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    1 Minute
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    News
    Hand mit blauer und grüner Gummihandschuhen, die eine Solarzelle berühren.
    These 160 µm thin silicon solar cells are applied to the front side using the screening process. A laser is used to connect the 10,000 contact points to the back side of the reflective aluminum surface visible in the background. These contact points, each measuring a one-hundredth of a square millimeter, convey the load carriers via an insulating intermediate layer.
    Nahaufnahme einer Oberfläche mit einer weißen Risslinie und einer körnigen Struktur.
    Edge insulation as seen through the microscope: The separating laser-drawn line runs trough the center.
    Querschnitt durch eine Substanz mit einer vertikalen Rissbildung und Blasenbildung.
    A cut-through view of a laser-drilled hole in a silicon wafer
    Junger Mann in dunklem Anzug und weißem Hemd lehnt an einer Glaswand in einem modernen Gebäude.
    Connecting lasers and photovoltaics: Andreas Grohe from Fraunhofer ISE

    At the limits of mechanics

    The knack of the back side

    Costs compared with profit

    50 billionths of a second is still too slow for patterning

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