Author(s)

Bakary Dit Dembo Sylla¹, Ibrahima Ly², Ousmane Sow³, Babou Dione¹, Youssou Traore¹, Grégoire Sissoko¹

¹Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal.
²Electromecanical department, Polytechnic School of Thiès, Thiès, Senegal.
³University Institute of Technology, University of Thiès, Thiès, Senegal.

In this work, we study the method for determining the maximum of the minority carrier recombination velocity at the junction Sf_max, corresponding to the maximum power delivered by the photovoltaic generator. For this, we study the temperature influence on the behavior of the front white biased solar cell in steady state. By solving the continuity equation of excess minority carrier in the base, we have established the expressions of the photocurrent density, the recombination velocity on the back side of the base Sb, and the photovoltage. The photocurrent density and the photovoltage are plotted as a function of Sf, called, minority carrier recombination velocity at the junction surface, for different temperature values. The illuminated I-V characteristic curves of the solar cell are then derived. To better characterize the solar cell, we study the electrical power delivered by the base of the solar cell to the external charge circuit as either junction surface recombination velocity or photovoltage dependent. From the output power versus junction surface recombination velocity Sf, we have deduced an eigenvalue equation depending on junction recombination velocity. This equation allows to obtain the maximum junction recombination velocity Sf_max corresponding to the maximum power delivered by the photovoltaic generator, throughout simulink model. Finally, we deduce the conversion efficiency of the solar cell.

Silicon Solar Cell-Junction Surface Recombination Velocity-Maximum Power

Sylla, B. , Ly, I. , Sow, O. , Dione, B. , Traore, Y. and Sissoko, G. (2018) Junction Surface Recombination Concept as Applied to Silicon Solar Cell Maximum Power Point Determination Using Matlab/Simulink: Effect of Temperature. Journal of Modern Physics, 9, 172-188. doi: 10.4236/jmp.2018.92011.