SOLAR CELLS
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United States of America Patent
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Issued Date -
Apr 25, 2013
app pub date -
Sep 13, 2012
filing date -
Oct 19, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Solar cells are provided. The solar cell may include a substrate, a first electrode on the substrate, a first light absorption layer disposed on the first electrode and including silicon containing oxygen, a second light absorption layer disposed on the first light absorption layer and including silicon containing germanium, and a second electrode on the second light absorption layer. The first light absorption layer may include a plurality of semiconductor layers which have oxygen-content ratios different from each other, respectively. The second light absorption layer may include a plurality of semiconductor layers which have germanium-content ratios different from each other, respectively.
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