Multijunction photovoltaic cell fabrication
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United States of America Patent
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Sep 2, 2014
Grant Date -
Jan 3, 2013
app pub date -
Sep 13, 2012
filing date -
Jun 9, 2009
priority date (Note) -
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Abstract
A multijunction photovoltaic (PV) cell includes a bottom flexible substrate and a bottom metal layer located on the bottom flexible substrate. The multijunction photovoltaic cell also includes a semiconductor layer located on the bottom metal layer and a stack having a plurality of junctions located on the semiconductor layer, each of the plurality of junctions having a respective bandgap. The pluralities of junctions are ordered from the junction having the smallest bandgap being located on the substrate to the junction having the largest bandgap being located on top of the stack.
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