An approach to extract the parameters of solar cells from their illuminatedIVcurves using the Lambert W functio

Abstract

In this article an approach based on the Lambert W function is applied to analysis of various types solar cellsand solar modules at a given insolation level and temperature; it can be used to extract accurate values of the parametersof a solar cell/module using experimental data or information available from the datasheet. These parameters are thephotocurrentIph, the reverse saturation currentIo, the diode ideality factora, the series resistanceRs, and the shuntresistanceRsh. The parametersIo,a,Rs, andRshare calculated with the aid of 4 equations that can be solvedsimultaneously while increasing the value ofIphin small increments. The calculated parameters are found to be ingood agreement with those obtained in the literature. The experimental data of various solar cells/modules devices areobtained from the literature. Some of these devices are silicon solar cells and modules in addition to organic and DSSCsolar cells. The mathematicalIVcharacteristics and the mathematicalPVcharacteristics are found to be in goodagreement with the experimental data.