Synthesis and characterization of single crystalline selenium nanowire arrays |
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Affiliation: | 1. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China;2. School of Material Science and Engineering, Jiangsu Key Laboratory of Material Surface Technology, Changzhou University, Changzhou 213164, China;3. Qualtec Co., Ltd, Osaka 590-0906, Japan |
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Abstract: | Ordered selenium nanowire arrays with diameters about 40 nm have been fabricated by electrodeposition using anodic porous alumina templates. As determined by X-ray diffraction, Raman spectra, electron diffraction and high-resolution transmission electron microscopy, selenium nanowires have uniform diameters, which are fully controllable. Single crystalline trigonal selenium nanowires have been obtained after postannealing at 180 °C. These nanowires are perfect with a c-axis growth orientation. The optical absorption spectra reveal two types of electron transition activity. |
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