Effect of TiO2 thickness on dye sensitized solar cell performance

Abstract

A dye solar cell with a dimension of 6 × 2 cm is fabricated with thickness of 40 μm, 80 μm and 120 μm of TiO2 by smearing it on an ITO coated glass. It is then tested under the average solar irradiance and temperature of 693.69 w/m2, 44.4°C respectively. Based on experimental investigation it is found that TiO2 of 40 μm produces V oc = 0.21V, Isc= 121.28μA, Fill Factor (FF) = 1.1845, while the 80 μm produces Voc= 0.16 V, Isc= 69.89μA, Fill Factor (FF) = 1.49 and TiO2 layer with thickness of 120μm produces Voc = 0.00063 V, Isc = 0 mA, Fill Factor (FF) = 0. From these results it shows that the best charge generation is from the thinner TiO2 thickness layer which is the 40um compare to with the other size.