We have used a thermodynamic model to calculate theoretical limiting efficiencies for simple and multiple gap solar cells. The limiting efficiency is 26% for a simple solar cell of hydrogenated amorphous silicon, operating at one Sun sensitivity. For a multiple gap cell made from hydrogenated amorphous silicon, together with a second cell, made from a material with lower band gap, it is 38%. The optimum band gap for the second material is 1.0 eV.
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Research Article| November 01 1983
Limiting efficiencies for multiple energy‐gap quantum devices
Cheng‐Hsiao Wu, Richard Williams; Limiting efficiencies for multiple energy‐gap quantum devices. J. Appl. Phys. 1 November 1983; 54 (11): 6721–6724. https://doi.org/10.1063/1.331859
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