Comparison of theoretical and experimental results for band-gap-graded CZTSSe solar cell

2017 
Abstract The simulation of CZTSSe solar cells is presented in this paper. The simulation results are in reasonable agreement with the experimental data, indicating the reliability of simulation results. New structure is proposed to increase the functionality of the cell. Improved functional performances are achieved by inserting a P-Silicon (P-Si) layer as back surface field. Simulation results suggest that by inserting this P-Si layer, efficiency of the CZTSSe solar cell increases from 12.6% to 16.59%, which is a significant improvement. For the champion cell J SC  = 36.27 mA/cm 2 , V OC  = 0.625 V and FF = 73.11% has been achieved.
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