SCAPS-1D Simulations for Comparative Study of Alternative Absorber Materials Cu2XSnS4 (X = Fe, Mg, Mn, Ni, Sr) in CZTS-Based Solar Cells

In CZTS-based solar cells, finding an alternative absorber layer material to improve the device performance is ongoing research subject. In this paper, we have identified five alternative absorber layer materials, namely Cu2XSnS4 (X = Fe, Mg, Mn, Ni, Sr) and investigated the devices performance with architecture Al-ZnO/i-ZnO/CdS/Absorber/Mo in SCAPS-1D simulator individually of above said five different absorber materials which has not been reported in literature. All the solar cell devices are then optimized on device level by varying thickness of absorber layer, absorber doping and defect density and absorber/buffer interface defect density. We also observed their impact on solar cell characteristic parameters. A comparative study is also carried out to find applicability of these materials as an alternative absorber layer to CZTS in CZTS-based solar cells.