Publication

Abstract : The interest in the dye sensitized solar cell is due to its low cost, simple preparation techniques and benign effect on thenbsp;environment. Thin film of TiO2 deposited on FTO (Fluorine doped Tin Oxide) acts as one electrodes, platinum coated FTO acts asnbsp;the other electrode and eosin B solution acts as the sensitizer. Lithium iodide, iodine in acetonitrile solution is used as the electrolyte. It is noted that an efficiency of 7.4% was observed for a cell with Intensity 70 lux. Also the open circuit voltage ofnbsp;0.5V, short circuit current of 150µA and a fill factor of 0.68 were observed for the cell of area 1X1 cmnbsp;2. The experimental modelnbsp;is checked with theoretical model using MATLAB software. It is noted that the simulated values follow a pattern which closely resembles the actual values of the experiment. The effect of the aging process on the overall performance of the device wasnbsp;analyzed by means of electrochemical impedance spectroscopy. The results shows that the electrolyte-TiO2 capacitance of 20 µFnbsp;(parallel) and the resistance of 14.74 k ohms (parallel) in series with the platinum resistance of 25.58 ohms.