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In this work, a model of back-wall superstrate CuInxGa1-xSe2 (CIGS) thin film solar cell with Glass/SnO2:F/CIGS/CdS/ZnO/Ag was established by a simulation tool SCAPS. The influence of bandgap grading, accepter density and the thickness of CIGS layer on the performance of superstrate device has been systematically investigated. The simulation was carried by lighting through SnO2:F transparent contact...
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