Abstract
In this paper, a three-dimensional study on a polycrystalline silicon solar cell under polychromatic illumination in an instational regime. The influence of grain size, recombination velocity at the grain boundaries on the density of the minority carriers of a silicon solar cell, is presented. Based on the continuity equation of the minority carriers in the solar cell base, the expressions of the photocurrent density and the photovoltage in function of the grain size, the recombination velocity, are deduced. The continuity equation of the carriers has been solved by a numerical method with boundary conditions and physical constants fixed in relation to our reference model. The influence of time t on the density of the carriers and on the electric power was presented in this work also. The electrical voltage and current were studied according to the recombination velocity. The conversion efficiency according to the grain size and also presented an assessment of the performance of our model of study. The expressions of the output power and the energy conversion of the solar cell, are determined in order to optimize its functional state. We recall that, the objective is to make a numerical resolution, making fewer simplifying hypotheses so that the study is closer to reality compared to other methods of resolution.
Highlights
More and more research on photovoltaic solar energy is intensifying and the yield, which was initially around 4%, is around 20% less
For a given grain size, the photocurrent density increases with the increase of the junction recombination velocity
In the interval [10W m. s# V ; 10X m. s# V ] of the junction recombination velocity, the high values of the photocurrent correspond to the short circuit functioning of the solar cell: the photogenerated minority carriers have enough energy to cross the junction in order to give the short circuit photocurrent
Summary
More and more research on photovoltaic solar energy is intensifying and the yield, which was initially around 4%, is around 20% less. The performance is closely linked to the electronic and electrical properties of the solar cell [1]. There are other factors that can affect the performance of the cell, such as the illumination and its frequency [1,2]. To optimize the performance of a photovoltaic cell, the characteristics of the recombination parameters must be well controlled and well characterized [2,3]. In logic of participation and contribute to research in this field, we have carried out a theoretical and numerical study in 3-D modeling of a silicon photopile
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
