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Selecting tandem partners for silicon solar cells

Combining silicon and other materials in tandem solar cells is one approach to enhancing the overall power conversion efficiency of the cells. We argue that top cell partners for silicon tandem solar cells should be selected on the basis of their spectral efficiency — their efficiency resolved by wavelength.

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Figure 1: Limiting efficiencies of silicon-based tandem PV cells.
Figure 2: Using spectral efficiency to choose tandem pairings.
Figure 3: Guide for predicting the maximum possible efficiency of a silicon-based tandem as a function of the top-cell bandgap and efficiency.

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Correspondence to Zachary Holman.

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Yu, Z., Leilaeioun, M. & Holman, Z. Selecting tandem partners for silicon solar cells. Nat Energy 1, 16137 (2016). https://doi.org/10.1038/nenergy.2016.137

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  • DOI: https://doi.org/10.1038/nenergy.2016.137

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