Preparation of TiO۲ Nanostructures and Its Plasma Coating in the Dye-Sensitized Solar Cell

In this research, TiO۲ nanostructures were prepared using the hydrothermal method. The aerosol was regenerated from the precursor solution droplets by entering the non-thermal plasma and TiO۲ nanostructures were deposited on the surface of the substrate. XRD and SEM analyses have been used to investigate nanostructure morphology. Dye-sensitized solar cells were fabricated using TiO۲ nanostructures as a photoanode. The results showed that the surface prepared with TiO۲ nanostructures by the hydrothermal method has a higher specific surface area, more pigment absorption, and short circuit current density than the unmodified surface. In addition, the TiO۲ photoanode-based pigment solar cell using the hydrothermal method showed a short circuit current density of ۲۱.۶۷ mA/cm۲, an open-circuit voltage of ۰.۶۷ V, and a photon-to-electricity conversion efficiency of ۵.۶۲%, which is about ۱۷% more than the yield obtained. This comes from a solar cell without plasma modification with an efficiency of ۵.۱۱%. The increase in efficiency can be attributed to the increase in electrical conductivity in the photoanode, the tight connection of the conductive surface of the anode with the pigment molecules, and the greater contact surface of the photoanode with the electrolyte.

کلیدواژه ها:

Plasma treatment ، Dye-Sensitized Solar Cell ، TiO۲ nanostructures ، thin film solar cell ، Efficiency