Present article deals with analysis of output characteristics in ZnO based Dye Sensitised Solar Cell (DSSC) using a Lambert W-function technique and MATLAB Simulation. We have used an analytical approach having no approximation for extracting various parameters of DSSC, a well known Lambert W-function technique. The model used in present work is single diode model including the capacitance in equivalent circuit and hence study its effect on currentvoltage characteristics and other DSSC parameters. Results hence obtained are discussed and validated using MATLAB Simulation.