Semnan University Press Progress in Physics of Applied Materials 2783-4794 5 1 2025 11 01 Preparation of TiO2 Nanostructures and Its Plasma Coating in the Dye-Sensitized Solar Cell 11 16 9184 10.22075/ppam.2024.35331.1117 EN Zeynab Kiamehr Department of Physics, Tafresh University, Tafresh, Iran Journal Article 2024 09 15 In this research, TiO₂ nanostructures were prepared using the hydrothermal method. The aerosol was regenerated from the precursor solution droplets by entering the non-thermal plasma and TiO₂ 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 TiO₂ nanostructures as a photoanode. The results showed that the surface prepared with TiO₂ 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 TiO² photoanode-based pigment solar cell using the hydrothermal method showed a short circuit current density of 21.67 mA/cm², an open-circuit voltage of 0.67 V, and a photon-to-electricity conversion efficiency of 5.62%, which is about 17% more than the yield obtained. This comes from a solar cell without plasma modification with an efficiency of 5.11%. 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. https://ppam.semnan.ac.ir/article_9184_642eaa3479d2eb1130f6e0564f00f751.pdf