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  Global Journal of Physical Chemistry. Volume 2, Issue 2 (2011) pp. 236-240
  Research Article Free Article
Extraction of physical parameters of solar cell model with double exponential from illuminated I-V experimental curve
  S. Yadir, S. Assal, M. Sidki, M. Khaidar, M. Benhmida, O. Aomari, A. Malaoui, E. Bendada, M. Mabrouki  
Département de Physique, Université Chouaïb Doukkali, B.P 20, El Jadida, Morocco Laboratoire de Génie industriel, Université Sultan Moulay Slimane, Béni Mellal, Morocco
  In this paper, we present a new method for extracting physical parameters of the illuminated solar cell model. The equivalent circuit includes two diodes with two saturation currents I01, I02, a current generator Iph, a series resistance RS and a conductance GP. A one variable nonlinear equation being easier to manage in an optimization program, we determine experimentally the value of RS, we define a new variable X = V – RSI, and we fit the experimental characteristics using a Mathematica code. This method is first compared to the so-called five-point method. The obtained results are then compared to those given by three extraction methods applied to solar cell model represented by an equivalent circuit containing a single diode. We find that the best agreement with the experimental characteristic is obtained with the two diodes model. In this study, the experimental measurements were made with a commercial Conrad solar cell.
  Solar cell; I–V characteristics; Two diodes model; Single diode model  

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