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TiO2 nanorods (NRs) are successfully synthesized on fluorine‐doped tin‐oxide pre‐coated glass substrates via hydrothermal technique. The effect of growth parameters on morphology of the synthesized NRs is investigated in detail. The results revealed that critical values for temperature, growth‐time, acidity, and precursor concentration are required for the synthesis of well‐aligned TiO2 NRs. Following the optimization of growth parameters, the well‐oriented TiO2 NRS are decorated with a thin‐sputtered layer of CdTe (CdCl2‐treated) to form a third generation inorganic‐sensitized solar cell. The power conversion efficiency associated with the constructed solar cell is found to be 0.42%, which is exactly 3.5 times larger than that obtained for the non‐CdCl2‐treated device structure. As a second part of this study, a Schottky‐type Ag/TiO2 UV‐photodetector is fabricated, which exhibited a drastic increase in photocurrent under UV‐light exposure, with a responsivity of ∼3 A W−1 for 380 nm at −1 V.

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