Enhanced photovoltaic performance of WO3 nanoparticles added dye sensitized solar cells

This study investigates the effect of various concentrations of Tungsten Oxide (WO₃) nanoparticles on the performance of dye sensitized solar cells. For that WO₃ nanoparticles are synthesized by using solvothermal method and annealed at room temperature, 100 and 400 °C. The crystalline and morphology of the synthesized WO₃ nanoparticles was characterized by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). Solar cell with 1 % WO₃ nanoparticles (annealed at 100 °C) added TiO₂ electrode exhibits an enhanced short-circuit current density of 12.94 mA cm^?2, open-circuit photo voltage of 0.67 V, fill factor of 0.57, and overall power conversion efficiency of 5.03 %.