There is a crucial relationship between the output parameters of the cell and the thickness of the absorber layer; with an increase in thickness, more light can be absorbed, leading to the generation of a greater number of electron-hole pairs. However, an increase in thickness also results in a reduction of back contact recombination current density, which can enhance carrier collection efficiency but simultaneously increases the probability of recombination at the back contact, ultimately reducing overall efficiency . In this part of the study, both cells were simulated with thickness values ranging from 0.1 μm to 1 μm.