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Ordered Mesostructured CdS Nanowire Arrays with Rectifying Properties

Author(s): Yuan Na | Cheng Gang | An Yanqing | Du Zuliang | Wu Sixin

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 5;
Start page: 414;
Date: 2009;
Original page

Keywords: Nanomaterials | CdS | Nanowire arrays | SBA-15 | Rectification

Abstract Highly ordered mesoporous CdS nanowire arrays were synthesized by using mesoporous silica as hard template and cadmium xanthate (CdR2) as a single precursor. Upon etching silica, mesoporous CdS nanowire arrays were produced with a yield as high as 93 wt%. The nanowire arrays were characterized by XRD, N2adsorption, TEM, and SEM. The results show that the CdS products replicated from the mesoporous silica SBA-15 hard template possess highly ordered hexagonal mesostructure and fiber-like morphology, analogous to the mother template. The current–voltage characteristics of CdS nanoarrays are strongly nonlinear and asymmetrical, showing rectifying diode-like behavior.

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