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TiO2 nanorodswere prepared by DC reactive magnetron sputtering technique and applied to dye-sensitized solar cells (DSSCs). The length of the TiO2 nanorods was varied from 1 μm to 6 μm. The scanning electronmicroscopy
images showthat the nanorods are perpendicular to the substrate. Both the X-ray diffraction patterns and Raman
scattering results show that the nanorods have an anatase phase; no other phase has been observed. (101) and
the (220) diffraction peaks have been observed for the TiO2 nanorods. The (101) diffraction peak intensity
remained constant despite the increase of nanorod length, while the intensity of the (220) diffraction peak
increased almost linearly with the nanorod length. These nanorods were used as the working electrodes in
DSSCs and the effect of the nanorod length on the conversion efficiency has been studied. An optimumphotoelectric
conversion efficiency of 4.8% has been achieved for 4 μm length nanorods.
Descrição
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Titanium dioxide Nanorods Sputtering Dye sensitized solar cells
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