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- W4386112539 abstract "The electronic and optical properties of Cu2NiGeS4 (CNGS) are examined using the first-principle DFT calculations. A unique mBJ + U potential method is used for the band gap energy calculation of CNGS. With a remarkably high absorption coefficient (104 cm−1), CNGS has become a promising candidate for photovoltaic applications. SCAPS-1D tool is used to simulate a thin-film solar cell with a Mo/MoS2/Cu2NiGeS4 (CNGS)/CdS/ZnO/ZnO:Al structure. The impact of various factors, such as layer thickness, donor and acceptor concentrations, and defect density on the CNGS layer was explored. This study also explores the combination of suitable buffer layers (such as CdS, ZnS, and their alloy Cd1−xZnxS), along with different doping concentrations and thicknesses, to be used as suitable buffer layers in the CNGS solar cell. The simulation outcomes suggest that the optimal thickness for the absorption layer in CNGS solar cells is between 2000 and 2400 nm, while the ideal thickness for MoS2 is 100 nm. The buffer layer should be between 20 and 50 nm. Keeping the defect density of CNGS below 1014 cm−3 is crucial for high efficiency. The optimized results yield an efficiency conversion rate of 20.05%, a 66.77% fill factor, a short-circuit current of 29.67 mA/cm2 and an open-circuit voltage of 0.983 V." @default.
- W4386112539 created "2023-08-24" @default.
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- W4386112539 date "2023-10-01" @default.
- W4386112539 modified "2023-10-02" @default.
- W4386112539 title "Modeling of highly efficient CNGS based kesterite solar cell: A DFT study along with SCAPS-1D analysis" @default.
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- W4386112539 doi "https://doi.org/10.1016/j.solener.2023.111929" @default.
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