Theoretical simulation of ZnS buffer layer thin films with SCAPS-1D software for photovoltaic applications

This Work represents the influence of some parameters (Temperature, existence of Buffer layer and its thickness), using a Numerical simulation of thin film solar cells, named SCAPS (which is a one-dimensional solar cell capacitance simulator) in modeling of the high efficiency CIGS-based solar cells (with efficiency of η=10.87%).In each case, the photovoltaic parameters have been calculated. It has been concluded that, the efficiency of CIGS-based solar cells is decreasing with increasing of the temperature and the thickness of Zinc Sulfide buffer layer. However, when the buffer layer doesn’t exist in solar cells photovoltaic, we noticed that the efficiency of solar cells is increasing to (η=12.04%) under the AM1.5 spectrum, one sun and at room temperature, with increasing of the short-circuit current density (Jsc), and decreasing of open-circuit voltage (Vco).