Ultra lightweight photovoltaic device and method for its manufacture
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United States of America Patent
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Apr 14, 2009
Grant Date -
Mar 19, 2009
app pub date -
Oct 20, 2005
filing date -
Oct 21, 2004
priority date (Note) -
Expired
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Abstract
An ultra lightweight semiconductor device such as a photovoltaic device is fabricated on a non-etchable barrier layer which is disposed upon an etchable substrate. The device is contacted with an appropriate etchant for a period of time sufficient to remove at least a portion of the thickness of the substrate. The barrier layer prevents damage to the photovoltaic material during the etching process. Photovoltaic devices fabricated by this method have specific power levels in excess of 300 w/kg.
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