Perovskite solar cells based on CH3NH3SnI3 Structure

Abstract

In recent years, organic-inorganic perovskite solar cells have attracted considerable interest in the photovoltaic research community because of its ease of processing, low production costs, super light-harvesting characteristics, and relatively high performance, making it more desirable than other current solar cell materials. Lead-based perovskites (CH3NH3PbX3, X=Cl, I, Br) solar cells have recently achieved high efficiency of ∼19.3 percent, well exceeding most thin-film and organic solar cells’ efficiencies. The presence of lead, toxic material in these solar cells, therefore poses serious challenges to our health and the environment. ‘Tin’ is nontoxic and stands as a replacement to ‘lead’ for commercial purposes. in halide based Perovskites possess a potential for higher quantum efficiency because of their enhanced light absorption capability due to the wide-ranging absorption spectrum in the visible region with a comparatively lower band gap of 1.3 eV than lead-based Perovskites. In this work, we have modeled a tin-based perovskite simulation model with FTO Glass / ZnO / CH3NH3SnI3 / Cu2O / Pt. novel architecture and analyzed using the SCAPS-1D, which is well suited for studying photovoltaic architecture. Use this software method and we analyzed the thickness, fault density, and operating temperature of the model by simulating under various conditions. With the optimize the thickness to be (0.03 μm) corresponding best efficiency among another thickness of perovskites, and other layers, the defect density of absorber layer (1017 cm-3 ) the encouraging result of maximum power conversion efficiency(PCE) reached to 9.27%, the short-circuit current density(Jsc) is 46.569 mA/cm2, and fill factor(FF) is 31.17% and open-circuit voltage(Voc) is 0.637 V is calculated.