An accurate organic solar cell parameters extraction approach based on the illuminated I-V characteristics for double diode modeling

In this paper, new electrical scheme modeling approach is proposed to extract the electrical parameters of the organic solar cells. These parameters such as shunt resistance, series resistance, saturation current, ideality factors, photo-current density and open-circuit voltage of the device have been ascertained using the Trust-Region Method (TR) for the double exponential solar cell model. We determine the seven solar cell parameters of the double diode circuit model using only the measured current-voltage data under illumination. The results of proposed approach demonstrate that it allows obtaining precise extracted parameters, which is confirmed by the good agreements between the fitted I-V curve and the experimental results. The proposed approach can be used to design the photovoltaic panels for an accurate solar power modeling.