SeriesInformation ; 26th European Photovoltaic Solar Energy Conference and Exhibition; 250-254 ; Abstract ; In this paper we present a new technique based on the junction recombination velocity for the evaluation of the electrical parameters of a vertical multijunction solar cell. After the resolution of the continuity equation, photocurrent density and photovoltage are determined and the I-V curve is plotted; two equivalents electric circuit of the solar cell in open and short circuit are proposed allowing us to deduce the shunt and series resistance for different configurations of the vertical multijunction solar cell.