Analytical Modelling Study of CZTS Thin Film Solar Cell for High Efficiency Performance.

In this paper, ZnO:AL/ZnO/n-ZnS/p-CZTS/MoS2 solar cell was studied by SCAPS simulation process. We performed enhancement using the influence of changing the energy gap of the window layer ZnO:AL and absorption layer CZTS. Furthermore, the impact of the carrier concentration of the window ZnO:AL and absorption layer CZTS were studied. It was found the efficiency of the solar cell rises with the energy gap value of the window layer. The best efficiency was obtained at (ƞ=29.1%), when the energy gap of the window layer was found to be (3.5eV). Additionally. the best efficiency was found to be (ƞ=28.9%) when the absorption layer was exhibited to be (1.35eV). After doped concentration, the best efficiency of the solar cell of the window layer ZnO:AL and absorption layer CZTS were found to (ƞ=28.0%, 28.7%) when the doping concentration were found to be (ND=1.00E+16cm-3, 1.0E+19cm-3) respectively. Clearly, the comparison between the experimental and theoretical solar cell was studied. The results illustrate the good matching between the experimental and theoretical results and the interface defect layers of the CZTS/ZnS contributed to this match. [ABSTRACT FROM AUTHOR]