Kray, Daniel; McIntosh, Keith
In this paper we present experimental data on ultrathin silicon wafer solar cells as well as the analytical description of their open-circuit voltage and fill factor. For this we use the analytical model of Fischer and Plagwitz to describe the rear surface recombination that we extend for very low wafer thicknesses. We observe an unexpected drop of the cell voltage at∼40 μm thickness. This decrease cannot be described by the used models and is not reproduced via DESSIS simulations. From the new...[Show more]
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