Modeling of ZnO/MoS_2/CZTS photovoltaic solar cell through window, buffer and absorber layers optimization

摘要

In this work, we propose a feasible ZnO/MoS_2/CZTS structure where the classical CdS buffer layer is replaced by a molybdenum disulfide buffer layer. This proposed solar cell is investigated thereafter using SCAPS code so as to determine the optimal value of each layer thickness constituting the cell of interest. The different photovoltaic parameters are determined versus each layer thickness. Our solar cell shows a conversion efficiency of about 23.69%. This corresponds to optimal thicknesses of 0.1 μm for ZnO window layer, 0.2μm for M0S2 buffer layer and 1μm for CZTS absorber layer and common doping concentrations of 10~(18) cm~(-3) for each layer. This conversion efficiency compares reasonably with those previously quoted in the literature.