Synthesis of W –TiO2 nanoparticles for enhanced dye-sensitized solar cell performance

TiO2 nanoparaticles were prepared bysolegel method by varying different mole % of tungstan and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM). The energy-conversion efficiency of a cell based on 0.5 mol% W-doped TiO2 is significantly better, compared to that of a cell based on undoped TiO2. The enhancement of the performance of DSSCs achieved using 0.5 mol% W–TiO2 nanoparticle fims is attributable to the slower recombination time and the introduction absorption of light in the visible range and especially in the range 300–420 nm. Th above results demonstrate the potential application of introduction of W nanoparticles to improve for enhancing the performance of TiO2 nanoparticle-based DSSCs, which can be produced on a large scale at low cost

Keywords:

Dye-sensitized solar cells , nanoparticles , W , TiO2