Abstract

Single crystal TiO2 nanorod (TNR), aligned vertically and packed with the length up to 10 μm on the surface of FTO glass, are prepared hydrothermal method, without any surfactant materials. By adjusting reaction time and concentration of titanium precursor solution, the morphology of TNRs is controlled and result in 20-50 nm of diameters, 4-10 μm length and the inter-distance between TNRs are approximately 3.8 nm. Morphology-controlled TNR arrays are applied to a photoanode in photovoltaic cell. photo-conversion efficiency of Packed TNRs with 10 μm length reached 4.2%.

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