Herein, we used TiO₂ as the ETL and CBTS as the HTL in a CsPbI₃-based PSC and optimized it using SCAPS-1D software, where the final optimization of the device gave a maximum PCE of 19.06%.

This study employs theoretical simulations to identify ways to improve the efficiency of CsSnI ₃ -based perovskite solar cells with PCBM ETL. The optimized device with CFTS HTL with a structure of ITO/PCBM/CsSnI ₃ /CFTS/Se shows the highest PCE of 24.73%.

Here we have done SCAPS simulation for optimizing the performance of CsPbBr ₃ -based PSC. We first optimized the BMC with HTL connected mode and then optimized the CsPbBr ₃ , TiO ₂ , & CFTS layers' various parameters in both with-HTL and without-HTL modes.

In recent years, inorganic perovskite materials have attracted a lot of attention in the field of solar technology due to their exceptional structural, optical, and electronic properties. This study thoroughly investigated, using first-principles density-functional theory (FP-DFT), the impact of compressive and tensile strain on the structural, optical, and electrical properties of the inorganic cubic perovskite Sr₃AsI₃. The unstrained planar Sr₃AsI₃ molecule exhibits a direct bandgap of 1.265 eV value at Γ point. The bandgap of the Sr₃AsI₃ perovskite is lowered to 1.212 eV when the relativistic spin-orbital coupling (SOC) effect is subjected in the observations. In addition, the structure's bandgap exhibits a falling prevalence due to compressive strain and a slight rise due to tensile strain. The optical indicators such as dielectric functions, absorption coefficient, reflectivity, and electron loss function show that this component has a great ability to absorb in the visible range in accordance with band characteristics. When compressive strain is raised, it is discovered that the spikes of the dielectric constant of Sr₃AsI₃ move to lower photon energy (redshift), and conversely, while growing tensile strain, it exhibits increased photon energy changing behavior (blueshift). As a result, the Sr₃AsI₃ perovskite is regarded as being ideal for use in solar cells for the production of electricity and light management.

Strontium antimony iodide (Sr₃SbI₃) is one of the emerging absorbers materials owing to its intriguing structural, electronic, and optical properties for efficient and cost-effective solar cell applications.

To meet the increasing demand for power sources, scientists are continuously trying to improve the efficiency of solar cells. In these circumstances, Cs-based perovskites have attracted attention due to their intriguing performance. In this paper, eight different solar cells based on Cs-halide perovskite absorbers (CsPbI₃, CsPbBr₃, CsSnI₃, CsSnCl₃, Cs₂BiAgI₆, Cs₃Bi₂I₉, CsSn_0.5Ge_0.5I₃, and Cs₃Sb₂I₉) are investigated using the SCAPS-1D simulation program. Besides, ZnO and CFTS materials are proposed as promising candidates for charge transport material application, along with gold as the back contact. Initially, the impact of the absorber and the electron transport layer (ETL) thickness on the photovoltaic performance was evaluated. In addition, various parameters, such as the thickness, the donor and acceptor densities and the defect density, are investigated to locate the final optimized Cs-based structures. From this optimization, it is evident that among all the optimizing features, absorber materials and the hole transport layer (HTL) thickness, the HTL acceptor density enhanced the performance much more than the other optimizing features. Furthermore, to evaluate the characteristics of these devices, the series resistance, shunt resistance, working temperature, current–voltage density, and quantum efficiency are also simulated. Among all eight Cs-based perovskites, the ITO/ZnO/CsPbBr₃/CFTS/Au and ITO/ZnO/Cs₃Bi₂I₉/CFTS/Au devices achieved the best performance, with a conversion efficiency of 19.28% and 19.23%, respectively. Lastly, the performance of the SCAPS-1D simulator software is verified using the wxAMPS simulation program, where both yield results that are in excellent agreement. In conclusion, this research provides useful information for optimizing solar cell architectures and understanding the effects of various device components.