Roll-To-Roll Electroplating for Photovoltaic Film Manufacturing
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United States of America Patent
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Issued Date -
Apr 24, 2008
app pub date -
Oct 19, 2007
filing date -
Oct 19, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A roll to roll system for forming an absorber structure for solar cells on a flexible foil as the flexible foil is advanced through units of the system and by unwrapping from a supply spool and wrapping around a take-up spool. Surface of the flexible foil is first conditioned in a conditioning unit to form an activated surface. A precursor stack including copper, gallium and indium layers is electroplated onto the activated surface by utilizing separate electroplating units for each layers. The precursor layer is reacted with at least one of Se and S in an annealing unit of the system.
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