Performance of an Al0.92Ga0.08As/Al0.14Ga0.86As solar cell in concentrated sunlight

Abstract
An Al0.14Ga0.86As solar cell with an Al0.92Ga0.08As window has been operated in AM2 sunlight at flux concentrations up to 899 suns with a conversion efficiency at this maximum concentration of 15.5%. Evaluation of the cells shows minority‐carrier diffusion lengths ≳2 μm and quantum efficiencies ≈0.85. The use of such a cell for spectral‐splitting high‐efficiency solar cell applications is discussed.

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