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US 2022/0013677 A1Published application
Monolithic metamorphic multi-junction solar cell
AssigneeAZUR SPACE Solar Power GmbH
InventorsMatthias MEUSEL, Alexander BERG, Philipp SCHROTH
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Abstract
A monolithic multi-junction solar cell comprising a first III-V subcell and a second III-V subcell and a third III-V subcell and a fourth Ge subcell, wherein the subcells are stacked on top of one another in the specified order, and the first subcell forms the top subcell and a metamorphic buffer is formed between the third subcell and the fourth subcell and all subcells each have an n-doped emitter layer and a p-doped base layer and the emitter doping in the second subcell is lower than the base doping.
Claims15
A monolithic metamorphic multiple solar cell comprising:
- a first III-V subcell;
- a second III-V subcell;
- a third III-V subcell;
- a fourth Ge subcell, the first, second, third and fourth subcells being stacked on top of one another in the specified order, and the first subcell forms the top subcell, the first, second, third, and fourth subcells each have an n-doped emitter layer and a p-doped base layer;
- a metamorphic buffer formed between the third subcell and the fourth subcell;
- wherein no semiconductor bond is formed between the first, second, third and fourth subcells,
- wherein a thickness of the emitter layer of the second subcell is less than a thickness of the base layer,
- wherein the emitter doping in the second subcell is lower than the base doping, and
- wherein the second subcell is formed as a hetero cell.
6 more elements
Dependencies are inferred from the claim text.