Abstract
AbstractIn recent years, earth-abundant element-based solar cells have attracted the interest of researchers due to their excellent optoelectrical properties and green status, as well as their performance in a variety of other fields, such as photovoltaic technology. Copper zinc tin sulfide-selenide (CZTSSe) is a promising candidate for low-cost and non-toxic elements. In this work, we have used the SCAPS-1D simulator to investigate the performance of CZTSSe solar cells. The effect of device parameters such as the hole concentration and mobility, absorber layer band gap energy, and CdS buffer layer thickness have been examined. Furthermore, the impact of the work function of the solar cell’s back contact on improving the photovoltaic parameters of the CZTSSe cell device has been analyzed. The optimized structure with a work function of 5.65 eV (Pt) as a back contact shows the highest efficiency of 30.82%, a fill factor of 77.23%, an open-circuit voltage of 0.8664 V, and a short-circuit current density of 46.06072 mA/cm2. These findings indicate that it is possible to achieve high performance CZTSSe solar cells by optimizing the structure parameters.KeywordsKesterite CZTSSeSCAPS-1DHole mobilityWork functionHigh efficiency
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