摘要： The photovoltaic (PV) cell has been described by non-linear outputs characteristics in current-voltage and power-voltage. This outputs is affected by various effects such as; solar irradiance, temperature, wind and dust. Also, it is depending of the material used in P-N junction and it can vary with ideality factor of P-N junction. The goal of this paper is to describe and to plot the current-voltage and power-voltage under different temperatures, solar irradiance and ideality factor by using iterative method. To carry out this study, we chose the mono crystalline PV module with 60 cells connected in series to provide 255 Watt manufactured by Sunmodule. The obtained results have shown that the electrical output parameters are affected by the nature of the P-N junction. Moreover, at low irradiance, the maximum power point and open circuit voltage depends of semiconductor. At high solar level, the ideality factor variation of P-N junction affects only the maximum power point. Finally, the maximum power point is determined at different solar intensity level and temperature.