ZnO/ZnS(O,OH)/Cu(In,Ga)Se2/Mo SOLAR CELL WITH 18.6% EFFICIENCY
نویسندگان
چکیده
We report on recent enhancements to device performance leading to a certified total-area energy conversion efficiency of 18.6% for Cu(In,Ga)Se2 solar cells that incorporate a ZnS(O,OH) buffer layer as an alternative to CdS. Along with information on device fabrication and layer properties, we provide a comparative device analysis between this type of solar cell and the slightly more efficient ZnO/CdS/Cu(In,Ga)Se2/Mo solar cell structure. This comparative study allows us to elucidate the areas for optimization in the quest for conversion efficiency above 20% in thin-film polycrystalline solar cells. It quantifies the gains in current generation due to superior collection at short wavelengths, as well as the somewhat lower voltage and infrared response.
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تاریخ انتشار 2004