A method to determine the transient capacitance of the bifacial solar cell considering the cylindrica grain and the dynamic junction velocity (Sf)

Abstract

In this paper, we present a new technic based on the dynamic junction velocity (Sf) concept for the evaluation of the transient diffusion capacitance of the bifacial solar cell considering cylindrical model of the grains. Associating (Sf), the back surface recombination velocity (Sb) and the grain boundary recombination velocity (Sgb), we resolved the continuity equation in the base of the solar cell under monochromatic illumination. We calculated and plotted the solar cell’s transient diffusion capacitance profile which decreases with the dynamic junction velocity (Sf), the back surface recombination velocity (Sb), the grain boundary recombination velocity (Sgb) and the high wavelength. The study shows also that the transient diffusion capacitance increases with the grains size (R).

Keywords

• Grain Size
• Grain Boundary Recombination Velocity
• Polycrystalline
• Solar Cell
• Junction Recombination Velocity
• Wavelength
• Capacitance