MULTI-JUNCTION SOLAR CELL STRUCTURE
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United States of America Patent
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Issued Date -
Oct 27, 2011
app pub date -
Apr 21, 2011
filing date -
Apr 23, 2010
priority date (Note) -
Abandoned
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Abstract
A multi-junction solar cell structure includes a supporting substrate, a Group IV element-based thin film, and a Group III-V element-based thin film sequentially stacked on the supporting substrate. When the multi-junction solar cell structure is active, the Group III-V element-based thin film contacts the light before the Group IV element-based thin film does. The Group IV element-based thin film includes a first solar cell and the Group III-V element-based thin film includes a second solar cell, wherein the band gap of the first solar cell is lower than the band gap of the second solar cell.
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