FOUR JUNCTION SOLAR CELL
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Oct 15, 2012
filing date -
Oct 14, 2011
priority date (Note) -
Abandoned
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Abstract
A four-junction solar cell including a first layer comprised of AlGaInP, a second layer comprised of InGaAs, a third layer comprised of GaSb, a fourth layer comprised of InGaSb, a first tunnel junction disposed between the first and second layers, a second tunnel junction disposed between the second and third layers, and a third tunnel junction disposed between the third and fourth layers. Alternately, the four-junction solar cell includes AlGaInP as the top layer, InGaP as the second layer, InGaAs as the third layer and InGaSb as the bottom layer. Tunnel junctions are disposed in between each layer. An alternate solar cell design includes AlGaInP/GaAs/InGaAs/InGaSb layers.
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