The aim of this work is to carry out a comparative study of the magnetic field effect of 1-D and 3-D modelling on a bifacial polycrystalline silicon solar cell under multispectral illumination from both sides. The continuity equations were solved in order to obtain the expressions for the various electron densities. The expressions for the carrier densities (electrons) were used to obtain the expressions for the electrical parameters, such as photocurrent density (Jph), photovoltage (Vph) and electrical power P. The conversion efficiency, form factor (FF) and resistance at the point of maximum power Rop of the PV cells were then calculated. The results of the simulations showed that except for the currents, which decrease, the other electrical parameters for a 1-D model are greater than those for a 3-D model for each value of magnetic field considered. They also show that the value 2.5mT would be the optimum value for the magnetic field and an average regression rate of 13.25% in the performance of 3-D modelling compared with 1-D. This justifies that the magnetic field alters the one-dimensionnal case more than the three-dimensional case.

Magnetic Field, Modelling, Bifacial Solar Cell, Multispectral Illumination, Conversion Efficiency.