The performance of dye-sensitized solar cells (DSC) is affected by its components such as photoelectrode material, dye-sensitized, electrolyte, substrate and counter electrode materials. In this study, we investigated the effect the addition of larger TiO 2 particle as a scattering layer to the TiO 2 nanoparticle. The paste which containing the mixture of TiO 2 particle was deposited on flexible substrate of ITO-PET and followed by sintering at 120 o C. The surface morphology of photoelectrode TiO 2 films were observed using SEM and the optical properties were investigated by measure percent transmittance and absorbance of dye covered TiO 2 film using UV-Vis Spectrophotometer. The I-V characteristic of flexible dye-sensitized solar cells were measure using Sun Simulator with light source of Xenon at an intensity of 50 mW/cm 2 . The results showed that the current density and the conversion efficiency of dye solar cell enchance with the addition scattering layer, there are 0.2 mA/cm 2 and 0.135% respectively.