Abstract
This study presents a method based on the experimental measurement of the short-circuit current (Icc) and the open circuit voltage (Vco) of the solar cell. It permits the determination of recombination parameters such as: diffusion length (L), back surface recombination velocity (Sb), intrinsic junction recombination velocity (Sjo), and macroscopic parameters in particular, the shunt and series resistances of a bifacial solar cell for various illumination levels (n). Illumination level effects on macroscopic parameters are highlighted.
Highlights
IntroductionThe study of solar cells uses several parameters among which the illumination level (n) whose effects are considerable in the production of solar energy
The study of solar cells uses several parameters among which the illumination level (n) whose effects are considerable in the production of solar energy.Many studies dedicated to the illumination level have shown that all wavelengths of a multispectral light are not absorbed by the solar cell, and a modeling of the illumination level had been made, taking account only wavelengths absorptive by the photovoltaic cell [1] [2]
The short-circuit current density can be explicitly deduced according to the diffusion length, from the photocurrent density, if: the junction recombination velocity value exceeds a value about Sj = 106 cm/s; the back surface recombination velocity is replaced by its expression (15) for the front surface illumination and (16) for the back surface illumination
Summary
The study of solar cells uses several parameters among which the illumination level (n) whose effects are considerable in the production of solar energy. (2014) Illumination Level Effects on Macroscopic Parameters of a Bifacial Solar Cell. They have not determined macroscopic parameters in particular, shunt and series resistance [5]-[8]. The illumination effects on macroscopic parameters of a solar cell, subjected to various illumination levels, are investigated. From the experimental measurement of the short-circuit current and photo voltage for various illumination levels, the diffusion length, the back surface recombination velocity (Sb) and the intrinsic junction recombination velocity (Sjo) are determined.
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