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J.Sahaya Selva Mary, P. Princy, J.Annai Joseph Steffy, P. Naveen Kumar, Neena Bachan and J. Merline Shyla

Dye Sensitized Solar Cells (DSSCs) implanted with morphologically modified nanostructures are receiving great attention owing to their efficient transport of photo generated carriers, whose employment is expected to improve the cell performance. Herein, we report a facile hydrothermal method to synthesized TiO2 film composed of nanorod-arrays and nanopowder composed of flowers-like nanorod-arrays. The as-synthesized samples were characterized by Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD), Ultra Violet-Visible Spectroscopy (UV-Vis) and Photoconductivity techniques. FESEM textural properties revealed densely aligned nanorod like structure in the case of TiO2 film, whereas bud like cluster-nanorods manifested with nanoflower morphology in the TiO2 powder. The X-ray Diffraction (XRD) analysis indicated that both the structures conform rutile TiO2 phase with an average crystallite size of about 13.86 and 33 nm respectively. From the UV–Vis absorption spectra, it was evident that the absorption of TiO2 nanoflowers in the UV region was significantly higher than TiO2 nanorods. The flower-like nanostructure possessed superior photoconductivity as a consequence of its lower optical band gap and larger surface area thus presenting them as proficient photoanodes for DSSCs