Preparation of CdSe-TiO₂ Nanotube Array Films and their Photoelectric Properties under Visible Light

Abstract:

In this paper, CdSe-TiO₂ nanotube array composite films were successfully prepared through a two-steps method. TiO₂ nanotube arrays were firstly prepared by anodic oxidation method, based on which the composite films of CdSe-TiO₂ nanotubes arrays were prepared by electrochemical deposition. The influence of the concentration of SeO₂ on the structure and photoelectric performance of the composite films were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and photocurrent response tests. The results show that the cubic phase CdSe particles with the size of about 15~20 nm were uniformly distributed in highly ordered TiO₂ nanotubes and around the mouths of the nanotubes; With the increasing of concentration of SeO₂, the content of CdSe increases gradually while the photocurrent density of the composite films increased and decreased, The optimal photoelectric performance of composite films were obtained when the SeO₂ concentration was 4 mmol/L.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 932-936
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.932
• Online since: January 2013
• Authors: Fei Yang, Wei Liang, Jin Bo Xue
• Keywords: Anodic Oxidation, CdSe, Electrochemical Process, Photocurrent, TiO₂ Nanotube

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