Abstract
Well-oriented TiO2 nanorod (NR) arrays were fabricated directly on conductive side of F/SnO2 substrates via hydrothermal technique. The effect of growth time on the TiO2 NR thin film was examined. Field emission scanning electron microscope revealed that NRs exhibited a tetragonal structure with square top facets. Thickness measurements indicated that the thicknesses of the samples increased from 0.234[Formula: see text][Formula: see text]m to 1.544[Formula: see text][Formula: see text]m as the growth time was extended. The investigation of XRD indicates that the TiO2 films are single-crystalline type of rutile. The effect of growth time on optical and electrical properties has been studied. With optimum growth time, dye sensitized solar cell (DSSC) efficiency of 1.48% could be reached using 1.544[Formula: see text][Formula: see text]m long TiO2 NR arrays as electrode.
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