An improved efficiency of the cell based on the red frangipani flowers extract is due to the presence of anthocyanin which contains alcoholic groups. The presence of alcoholic groups may help for maximum binding on the surface of TiO2 nanostructure through chemical adsorption phenomena [32].Whereas ivy gourd fruits extract doesn’t have any adsorbing functional groups like AOH, ACOOH as the case of b-carotene and hence the possibility of binding with TiO2 surface is very low. In addition there are no electrondonating and withdrawing groups, which is most essential for the flow of electrons from the dye molecule to TiO2 under illumination of light [14,15]. Hence cell fabricated with red frangipani flowers extract shows relatively higher Jsc, which could be ascribed to its higher light harvesting efficiency in the visible region [33]. In order to identify the above processes, desorption of the sensitizer from the TiO2 surface was done using 0.1 M NaOH in methanol/water (1:1) mixture [34]. The surface concentration (C) of the sensitizers was spectrophotometrically measured and summarized in Table 1 indicates that the red frangipani flowers extract have adsorbed better on TiO2 surface compared to ivy gourd fruits extract sensitizer. Thus, the surface adsorbed with red frangipani flowers sensitizer play vital role in the device fabrication.