STUDY OF THE VARIATIONS OF THE MACROSCOPIC ELECTRIC PARAMETERS OF A SOLAR CELL ACCORDING TO THE USE TEMPERATURE

The Research has for objective to increase the performances of the thin film solar cells. Many scientific publications were interested by the development of the thin films which make the cell. Others based their research on the technology of the cell and the experimental elaboration conditions. In this paper we are interested by the performances of the cell during its utilization period. We study the influence of the use temperature on the macroscopic electric parameters of the solar cell. The range of use temperatures varies from 270K to 320K with a step of 10K. The type of cell studied is a Cu(In, Ga)Se2 thin film solar cell. The elucidated physical parameters are the characteristic density of current-voltage J-V, the open circuit voltage Voc, the short circuit current density Jsc, the form factor FF and the cell efficiency η. We find at the end of this investigation that the temperature of 270K gives the best electric parameters with a cell efficiency equal to 20,65%. These parameters decrease with the increase in the use temperature but remain significant.