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- W3091451522 abstract "Despite having higher carrier mobilities and absorption coefficients of germanium (Ge) than those of silicon (Si), there has been less focus on Ge-based solar cells due to the low bandgap and high cost of Ge wafer as well as the requirement of its high-purity level. Currently, the availability of high-purity Ge (HPGe), the low-cost wafer slicing method, and proper design guidelines make it possible to design HPGe-based solar cells. Accordingly, in this article, we have designed and simulated a novel n-CdS/p-HPGe/p+-BaSi2 based npp+ double-heterojunction solar cell (DHJSC), where HPGe, cadmium sulfide (CdS), and orthorhombic barium disilicide (β-BaSi2) have been used as the absorber, window, and back-surface field (BSF) layers, respectively. Using the solar cell capacitance simulator (SCAPS-1D), the effects of different physical parameters such as the thickness, doping, and defect densities, band offsets, and temperature on the photovoltaic (PV) parameters of the designed solar cells have been investigated systematically. This article renders the optimized PV parameters to improve the device performance with the highest power conversion efficiency (PCE) of ∼45.65% with a high open-circuit voltage of 1.16 V owing to the high built-in voltage of 1.7 V for the n-CdS/p-HPGe/p+-BaSi2 solar cells. This efficiency is almost consistent with the detailed balance limit for DHJSCs." @default.
- W3091451522 created "2020-10-08" @default.
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- W3091451522 date "2021-11-01" @default.
- W3091451522 modified "2023-09-27" @default.
- W3091451522 title "Design guidelines for a highly efficient high-purity germanium (HPGe)-based double-heterojunction solar cell" @default.
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- W3091451522 doi "https://doi.org/10.1016/j.optlastec.2021.107306" @default.
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