Improved performance in ZnO/CdS/CuGaSe2 thin-film solar cells

We report the growth and characterization of improved efficiency wide-bandgap ZnO/CdS/CuGaSe2 thin-film solar cells. The CuGaSe2 absorber thickness was intentionally decreased to better match depletion widths indicated by drive-level capacitance profiling data. A total-area efficiency of 9.5% was achieved with a fill factor of 70.8% and a V-oc of 910 mV. Published in 2003 by John Wiley Sons, Ltd.