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In the present study, titania (TiO 2 ) nanoarrays were prepared by hydrothermally oxidating a titanium substrate in aqueous alkali and then postannealed at 300°–550°C for 2 h. The nanoarrays were composed of oriented one‐dimensional nanowires or nanobelts. The growth mechanism of the nanoarrays was discussed by observing the structure under different synthesis conditions. The TiO 2 nanoarray film was transferred to a transparent conductive glass substrate, used as a photoanode of a dye‐sensitized solar cell (DSC). A light‐to‐energy conversion efficiency of 6.58% for the DSC was obtained.
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Wang et al. (2008) studied this question.
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