Modeling and Simulation of Heterojunction Solar Cell; Determination of Optimal Values

A heterojunction solar cell of ZnSe/ZnO/CIGS/Si structure has been simulated in order to determine the optimal values. The performed modeling and Simulation is used to get an idea and identify the optimal values that can be use in the manufacturing process, and the values obtained in this simulation presented an electrical parameters using Solar Cell Capacitance Simulator (SCAPS). In this study, the influence of absorber or wafer thickness and doping concentration were varied on the solar cell device and the following optimal values were obtained; Current density $(\mathrm{J}_{\mathrm{s}\mathrm{c}})=35.0833\mathrm{S}\mathrm{m}\mathrm{A}/\mathrm{c}\mathrm{m}^{2}$, Open circuit voltage $(\mathrm{V}_{\mathrm{o}\mathrm{c}})=0.\mathrm{S}339\mathrm{V}$, Fill Factor (FF) =S5.45%, and an efficiency $(\eta)=25\%.$ The range of doping concentration (lx1012 to lx1020 $\mathrm{c}\mathrm{m}^{-3}$). These variations lead to the achievement of 25% efficiency of the heterojunction solar cell and the optimal values shows a promising performance that the manufacturers can adopt.