Simple method for the determination of series resistance and maximum power of solar cell

Abstract

A simple method is proposed to determine the series resistance Rsand the perfection factor n of solar cells from the measurement of the tangents to the current I–voltage V curve at constant light intensity. The values of Rsand n thus determined are then used to predict the maximum power Pmand the voltage Vmat which the power gets maximum. This new method is applied successfully to the conventional cell, BSF (Back Surface Field) cell and the textured BSF Si cell. A good agreement is obtained between the calculated- and the directly measured values of Vmand Pm. © 1980 IOP Publishing Ltd.