Lattice matched solar cell and method for manufacturing the same
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United States of America Patent
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Oct 9, 2001
Grant Date -
N/A
app pub date -
Apr 20, 2000
filing date -
Apr 27, 1999
priority date (Note) -
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Abstract
A solar cell comprises at least a germanium (Ge) substrate, buffer layers formed on the germanium substrate, a first In.sub.x Ga.sub.1-x As layer of first conductivity type formed on the buffer layers, and a second In.sub.x Ga.sub.1-x As layer of second conductivity type formed on the first In.sub.x Ga.sub.1-x As layer to form pn junction. Because the composition x of In contained in the first In.sub.x Ga.sub.1-x As layer and the second In.sub.x Ga.sub.1-x As layer is in a range of 0.005.ltoreq.x.ltoreq.0.015, the inexpensive and high conversion efficiency solar cell can be achieved.
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