Abstract
The aim of this study is to determinate the electrical parameters of a white biased silicon solar cell submitted to an irradiation energy of particles (protons, helium, electrons and heavy ions). A theoretical study of the influence of irradiation energy on the photocurrent density, the photovoltage, the maximum power, as well as the maximum efficiency of the solar cell is presented through a resolution of the continuity equation relative to excess minority carrier. Then the expressions of the photocurrent density Jph, the photovoltage Vph, and the excess minority carrier recombination velocity at the back side Sb are established dependent of irradiation parameters ∅p, Kl respectively irradiation flux and intensity. In this work, we propose a method for determining the recombination velocity of the excess minority carrier at the junction Sfmax corresponding to the maximum power point delivered by the photovoltaic generator under the influence of the irradiation. It is then obtained by calculating the derivative of the power with respect to the excess minority carrier recombination velocity Sf at the junction emitter-base. A transcendental equation solution is deduced as eigenvalue, leading to the junction recombination velocity of excess minority carrier and also yields the solar cell maximum conversion efficiency.
Highlights
The aim of this study is to show the influence of irradiation energy on the electrical parameters of a silicon solar cell: photocurrent density, photovoltage, I-V characteristic, electric power and efficiency
This study showed us a decrease in short-circuit photocurrent and an increase in open-circuit photovoltage as irradiation energy increases
The decrease of the short-circuit photocurrent is manifested by a decrease in the excess minority carrier density that crosses the junction as the irradiation energy increases
Summary
The study of the effect of radiation on solar cells designed for space applications has long occupied research fields, in order to understand the stakes in their per-. These same concerns are studied at the terrestrial level in order to investigate the relationship between the solar cell parameters and those of the irradiation [4]. The expressions [10] [11] of the photocurrent density, the photovoltage, the excess minority carrier excess minority carrier recombination velocity at the back side Sb and the electrical power, all depending on the irradiation energy are deduced These parameters are represented graphically as a function of the excess minority carrier recombination velocity at the junction. The profiles of Sfmax, Vmax, Imax and ηmax versus irradiation energy are shown graphically
Sign-in/Register to view highlights & summary 
Published Version (
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