Received 2/11/2011,, online 6/11/20/11

Abstract-- This article proposes an accurate approach to calculate the internal parameters of a dye sensitized solar cell DSSC (L, α, m, D, n0, τ). This approach is based on the electron diffusion differential model and the values of the short circuit current density Jsc, the open circuit voltage Voc, and the current density and the voltage at the maximum power point i.e. Jmp and Vmp, respectively. Assuming, that the charge transfer at the counter electrode is potential controlled, the Butler-Volmer equation is adequately integrated with both the electron diffusion differential model, and the Schottky barrier model to account for the interfacial effect at counter electrode/electrolyte and TiO2/TCO interfaces on the J-V characteristics. Some parametric analyses were conducted to study the effect of temperature, and electrode thickness on various DSSC parameters