Single-junction solar cells with the optimum band gap for terrestrial concentrator applications

摘要

A single-junction solar cell having the ideal band gap for terrestrial concentrator applications. Computer modeling studies of single-junction solar cells have shown that the presence of absorption bands in the direct spectrum has the effect of "pinning" the optimum band gap for a wide range of operating conditions at a value of 1.14+/-0.02 eV. Efficiencies exceeding 30% may be possible at high concentration ratios for devices with the ideal band gap.