Numerical analysis of the non-ideal current-voltage characteristics of solar cell

Abstract

A revised method to evaluate parameters of solar cell from current-voltage characteristics,under illuminated or non-illuminated conditions,w as described. The series resistance( R s),the shunt resistance( R sh),the ideality factor( n),and the reverse saturation current density( J0) were extracted using the two diode circuit model from selected regions of the J-V curves. Using the presented model,more parameters w ith higher fitted precision have been extracted from experimental J-V curves of a CdS / CdTe thin film solar cell than using a single diode circuit one.