Thin Film Polycrystalline β-FeSi2/Si Heterojunction Solar Cells via Al Incorporation and Rapid Thermal Processing

This paper presents the numerical analysis of cadmium telluride (CdTe) based solar cells using iron di silicide (FeSi2) as the second absorber layer and aluminum-doped zinc oxide (AZO) as the window layer. The photovoltaic performance of solar cells with Al/AZO/CdTe/FeSi2/Ni structure was analyzed and improved by SCAPS-1D software. When analyzing the influence of thickness and carrier concentration on the photovoltaic performance, it was found that the optimum values for the CdTe layer were 300 nm and 1015 cm-3, for the AZO layer they were 10 nm and 1018 cm-3, while for the FeSi2 layer they were 1 µm and 1018 cm-3. The defect density (Nt) at the AZO/CdTe and CdTe/FeSi2 interfaces was also analyzed, obtaining that the optimum value of Nt is 1010 cm-2 at both interfaces. Device optimization is achieved by obtaining a maximum Power Conversion Efficiency (PCE) of 27.22% with an open circuit voltage (Voc) of 0.63 V, a short circuit current density (Jsc) of 51.43 mA/cm2 and a fill factor (FF) of 83.06%, which makes FeSi2 a potential alternative for the development of CdTe-based solar cells due to its absorption of photons with lower energy wavelengths.

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Thin Film Polycrystalline β-FeSi2/Si Heterojunction Solar Cells via Al Incorporation and Rapid Thermal Processing

Cited by 2 publications

References 13 publications

Numerical analysis of FeSi2 based solar cell with PEDOT:PSS hole transport layer

Numerical analysis of FeSi2 based solar cell with PEDOT:PSS hole transport layer

Theoretical improvement of the energy conversion efficiency of an AZO/CdTe heterojunction solar cell to over 27% by incorporating FeSi₂ as a second absorber layer

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Thin Film Polycrystalline β-FeSi2/Si Heterojunction Solar Cells via Al Incorporation and Rapid Thermal Processing

Cited by 2 publications

References 13 publications

Numerical analysis of FeSi2 based solar cell with PEDOT:PSS hole transport layer

Numerical analysis of FeSi2 based solar cell with PEDOT:PSS hole transport layer

Theoretical improvement of the energy conversion efficiency of an AZO/CdTe heterojunction solar cell to over 27% by incorporating FeSi2 as a second absorber layer

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Product

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Theoretical improvement of the energy conversion efficiency of an AZO/CdTe heterojunction solar cell to over 27% by incorporating FeSi₂ as a second absorber layer