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首页> 外国专利> INVERTED METAMORPHIC MULTIJUNCTION SOLAR CELL WITH TWO METAMORPHIC LAYERS AND HOMOJUNCTION TOP CELL

INVERTED METAMORPHIC MULTIJUNCTION SOLAR CELL WITH TWO METAMORPHIC LAYERS AND HOMOJUNCTION TOP CELL

机译：具有两个变质层和同质顶细胞的倒相变质多结太阳能电池

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摘要

A multijunction solar cell includes an upper first solar subcell having a first band gap, a second solar subcell having a second band gap smaller than the first band gap, and a first graded interlayer composed of (InxGa1-x)yAl1-yAs adjacent to the second solar subcell. The first graded interlayer has a third band gap greater than the second band gap subject to the constraints of having the in-plane lattice parameter greater or equal to that of the second subcell and less than or equal to that of the third subcell, wherein 0x1 and 0y1, and x and y are selected such that the band gap of the first graded interlayer remains constant throughout its thickness at 1.5 eV. A third solar subcell is adjacent to the first graded interlayer and has a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A second graded interlayer composed of (InxGa1-x)yAl1-yAs is adjacent to the third solar subcell and has a fifth band gap greater than the fourth band gap subject to the constraints of having the in-plane lattice parameter greater or equal to that of the third subcell and less than or equal to that of the bottom fourth subcell, wherein 0x1 and 0y1, and x and y are selected such that the band gap of the second graded interlayer remains constant throughout its thickness at 1.1 eV. A lower fourth solar subcell is adjacent to the second graded interlayer and has a sixth band gap smaller than the fourth band gap.
机译：一种多结太阳能电池，包括具有第一带隙的上部第一太阳能子电池，具有小于所述第一带隙的第二带隙的第二太阳能子电池，以及与所述第一太阳能电池相邻的由（InxGa1-x）yAl1-yAs组成的第一渐变中间层。第二太阳能子电池。所述第一渐变中间层具有大于第二带隙的第三带隙，这受到以下限制：平面内晶格参数大于或等于第二子单元的面内晶格参数，并且小于或等于第三子单元的面内晶格参数，其中0选择

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