Abstract In this paper, the device characteristics of Cu2BaSnSSe3 (CBT(S,Se3)) solar cells have been simulated using SCAPS-1D. The simulated results have been validated by comparison with the experimental data reported in the literature. For improving the cell performance and boosting the efficiency, adding different Back Surface Field (BSF) layers is suggested on the absorber layer. Inserting a BSF layer with optimum parameters causes enhancement of open-circuit voltage (VOC), in particular, causes better efficiency on the cell's performance. For this purpose, we optimize the MoSe2 layer, which is formed at the interface between CBT(S,Se3) absorber layer and Mo back contact. Investigation of MoSe2 helps us to represent optimum ranges for bandgap (Eg), electron affinity (χ), charge carrier density, thickness, the mobility of electron and hole (μe and μh) and the effective density of states of conduction band and valence band (NC and NV) of a material to choose as a BSF layer which can be inserted in CBT(S,Se3) solar cells and other types of cells like CZTSSe, perovskite and CIGS. Based on the optimum parameters for an appropriate BSF layer, Cu2BaSnSSe3 solar cell has been simulated by inserting SnS as a BSF layer, and the results indicated improvement in the cell's parameters. We recorded PCE = 7.31%, VOC = 0.867 V, JSC = 16.986 mA/cm2, and FF = 49.63.

中文翻译：

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模拟添加 BSF 层对 Cu2BaSnSSe3 薄膜太阳能电池的影响

摘要 本文利用SCAPS-1D模拟了Cu2BaSnSSe3(CBT(S,Se3))太阳能电池的器件特性。通过与文献中报道的实验数据进行比较，对模拟结果进行了验证。为了提高电池性能并提高效率，建议在吸收层上添加不同的背表面场 (BSF) 层。插入具有最佳参数的 BSF 层可提高开路电压 (VOC)，尤其是提高电池性能的效率。为此，我们优化了在 CBT(S,Se3) 吸收层和 Mo 背接触之间的界面处形成的 MoSe2 层。MoSe2 的研究有助于我们表示带隙 (Eg)、电子亲和力 (χ)、电荷载流子密度、厚度、电子和空穴的迁移率（μe 和 μh）以及材料的导带和价带状态的有效密度（NC 和 NV）作为可以插入 CBT(S,Se3) 太阳能电池的 BSF 层以及其他类型的电池，如 CZTSSe、钙钛矿和 CIGS。基于合适的 BSF 层的最佳参数，通过插入 SnS 作为 BSF 层来模拟 Cu2BaSnSSe3 太阳能电池，结果表明电池参数有所改善。我们记录到 PCE = 7.31%，VOC = 0.867 V，JSC = 16.986 mA/cm2，FF = 49.63。通过插入 SnS 作为 BSF 层模拟了 Cu2BaSnSSe3 太阳能电池，结果表明电池参数有所改善。我们记录到 PCE = 7.31%，VOC = 0.867 V，JSC = 16.986 mA/cm2，FF = 49.63。通过插入 SnS 作为 BSF 层模拟了 Cu2BaSnSSe3 太阳能电池，结果表明电池参数有所改善。我们记录到 PCE = 7.31%，VOC = 0.867 V，JSC = 16.986 mA/cm2，FF = 49.63。