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Sayad, Y.: Photovoltaic potential of III-nitride based tandem solar cells. Green, M.A., et al.: Solar cell efficiency tables (version 54). Marti, A., Araújo, G.L.: Limiting efficiencies for photovoltaic energy conversion in multigap systems. (eds.) Handbook of Photovoltaic Science and Engineering, pp. Wiley, Chichester (2011)įriedman, D., et al.: High-efficiency III-V multijunction solar cells. Luque, A., Martı, A.: Theoretical limits of photovoltaic conversion and new-generation solar cells.
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The maximum efficiency of ~ 23 is obtained for tandem design with enhancing open circuit voltage 1.4 V. Thus, at optimized upper absorber thickness of 0.191 µm and lower subcell 80 µm at transmitted spectrum the same current was obtained and gave an efficiency of 10.6% and 11.9%, respectively. Also, to obtain the same current for tandem structure, the upper subcell's performance is investigated at different thicknesses ranged from 0.1~1 µm while keeping the lower subcell thickness at 80 µm. Further, both the upper and lower cells have been evaluated at different thicknesses for tandem configuration after validation. The simulation and optimization of the single-junction CZTS and Si solar cells were initially performed to fit the state-of-the-art records efficiency of 11.65% and 18.7%, respectively. This study aims to evaluate the CZTS tandem cells’ performance based on the fact that both subcells are simulated to produce the best efficiency recorded at its bandgap. In this paper, the simulation-based studies of copper zinc tin sulfide/silicon (CZTS/Si) tandem cells based on CZTS as an upper subcell and silicon as a lower subcell absorber layer have been performed using SCAPS-1D. The monolithic tandem design of third generation silicon solar energy materials is auspicious for photovoltaics. Multijunction or tandem solar cells can split the solar spectrum over several subcells with different bandgaps to convert sunlight into electricity more effectively than single-junction solar cells.