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Dense array TPV modules with alternating polarity InGaAs cells
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DOI：10.1109/PVSC48320.2023.10359803.png)
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Abstract
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Improving the cell coverage in TPV modules can increase the electrical power density and reduce the losses in thermal storage batteries. We propose a compact module design built using alternating polarity InGaAs solar cells connected in series. The integration of n/p and p/n cells with minimum current and series resistance losses is challenged by the differing carrier transport and recombination properties of n and p-type InGaAs. Since the photons reflected at the front metal of the cell are -in principle- reused in the TPV system, the front grid shadowing factor becomes an additional degree of freedom for the cell design with low impact on the TPV efficiency. We show that the areal and series resistance losses in the TPV system can be minimized in the proposed compact module by engineering n/p and p/n cell designs.
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