Simulation of Theoretical and Experimental Parameters of Materials Used in CIGSe Thin Film Solar Cells by SCAPS software

The CIGSe thin film solar cell (TFSC) has been attracted to photovoltaic technologies for energy production due to its favorable material properties. This research work introduces the SCAPS software to model the CIGSe TFSC. From the simulated results, the solar cell performance was enhanced with an increase in thickness of the CIGSe by improving the absorption of photons. The recombination centers for the generated charge carriers were increased at higher carrier concentrations of the CIGSe. The efficiency was slightly improved when CdS thickness is increased from 20 to 100 nm. The collection of generated charge carriers was enhanced with a rise in carrier concentration of CdS, which increases the device performance. After analyzing these results, the optimized efficiency of 27.32% was noticed for CIGSe TFSC. The quantum efficiency (QE) results confirmed that the photons whose wavelength value lower than 900 nm are absorbed in the device. Moreover, the experimental results of CIGSe and CdS thin films are studied in this simulation. It was observed that the device’s performance was reduced with an increase in the thickness of the CdS. Hence, SCAPS software could be useful for designing the device experimentally.