High-density large-area nanowire arrays of thermoelectric material Sb 2 Te 3 have been successfully prepared using electrochemical deposition into the channels of the porous anodic alumina membrane. The morphologies, structure, and composition of the as-prepared Sb 2 Te 3 nanowires have been characterized using field-emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Individual Sb 2 Te 3 nanowires are single crystalline and continuous with uniform diameters (∼50 nm) throughout the entire length. The atomic ratio of Sb to Te is very close to the 2:3 stoichiometry.
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Jin et al. (2005) studied this question.
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