INVERTED METAMORPHIC MULTIJUNCTION SOLAR CELL WITH GRADATION IN DOPING IN THE WINDOW LAYER
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United States of America Patent
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app pub date -
Feb 15, 2013
filing date -
Sep 24, 2007
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Abandoned
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Abstract
A multijunction solar cell including a window layer with a gradation in doping; an upper first solar subcell having a first band gap adjacent to the window layer; a second solar subcell adjacent to said first solar subcell; a first graded interlayer adjacent to said second solar subcell, said first graded interlayer having a third band gap greater than said second band gap; a third solar subcell adjacent to said first graded interlayer; a second interlayer adjacent to said third solar subcell, said second graded interlayer having a fifth band gap greater than said fourth band gap; a fourth solar subcell adjacent to said second graded interlayer, such that said fourth subcell is lattice mismatched with respect to said third subcell.
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