When converting solar energy into electrical energy, the greatest attention is paid to conversion efficiency and the light trapping of solar cells. Efforts are made to determine ways to improve light trapping and increase the efficiency of solar cells. Pyramid texturing of the surface of solar cells plays an important role in this process, where a rough pyramid shape is achieved through various chemical processes. Each time a solar ray hits the surface, some of the light enters the cell, while some is reflected off the surface and returns to the incident medium. By texturing the surface, solar rays have more chances to hit the surface multiple times and enhance light trapping within the cell. The question arises as to how different parameters of pyramid textures affect light trapping in crystalline silicon solar cells. The main objective of this thesis is essentially to determine the impact of these parameters on light trapping through optical modelling and simulations and identify parameters that can improve light absorption in solar cells. Optical modelling and simulations have increasingly been used recently for the analysis and optimization of optoelectronic devices, making them a crucial tool for obtaining results. In this thesis, we will use the optical simulator CROWM to vary each of the pyramid texture parameters and observe the obtained results. Based on the results, we will plot graphs showing the dependence of short-circuit current density on reflectivity and absorption. The simulations will be conducted on three structures. We will be interested in the impact at the air/silicon interface, the silicon/air interface, and finally, the overall impact of the parameters on the entire solar cell. At the end of the thesis, we will draw conclusions and determine the influence of each parameter on light trapping in solar cells. Consequently, we will identify which parameter has the greatest impact on solar cell efficiency, ultimately leading to cell optimization.
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