Synthesis of Different Sizes TiO2 and Photovoltaic Performance in Dye-Sensitized Solar Cells

For more than 2 decades, extensive research has been done in the field of Dye-Sensitized Solar Cells (DSSCs) due to their low cost, easy preparation methodology, less toxicity, and ease production. In this work, performance DSSCs containing different particle sizes is studied. N -doped TiO was prepared by sol-gel method, controlling size through addition H O/Ti mole ratios R = 0, 20, 30, 40. The dried samples at 100°C were characterized X-ray diffraction, Optical Properties, High-Resolution Transmission Electron Microscope, Scanning Fourier-Transform Infrared Spectroscopy, -Adsorption-Desorption Isotherm, Raman Dynamic Light Scattering (DLS). DLS results show that decreases as O/TiO content increases from 0 It found nanoparticles with smaller distribution lowest conversion efficiency 0.95% ratio 40, photoelectrode higher a 1.59% for water-free sample. This could be explained larger particles have better dye adsorption, indicating it an effective surface area greater photon absorption electron-hole generation. also indicate trimodal absorbs wavelengths broad size.