Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Abstract Cu 2 SnS 3 (CTS) semiconductor material owns very interesting absorbing properties that allow it to be effectively utilized in many thin‐film‐based heterojunction solar cells. In this work, using the ball milling method, a mixture of pure elemental powders is used synthesize CTS material. Homemade undoped and Li‐doped target pellets are form CTS‐doped CTS‐undoped thin films. The crystallinity investigation synthesized targets films confirms formation tetragonal phase. Compositional, morphologic, optic studies also made examine effect Li atom incorporation on different These incorporated into cells (Al/n‐Si/CTS/Ag Al/n‐Si/Li 0.03 CTS/Ag). addition, J – V characteristics both demonstrated discussed details. films' thickness performance studied Solar Cell Capacitance Simulator (SCAPS‐1D) program. results calculation details compared with experimental results. An increase efficiency achieved based films, detail along SCAPS‐1D simulation carried out depending