以Te纳米棒为模板的一维纳米结构Sb2Te3的制备与热电性能研究

In this paper, we have demonstrated a two-step method to synthesize Sb2Te3 nanorods by using Te nanorods as the self-sacrificed templates. Impurity-free poly-crystalline Sb2Te3 nanorods have been synthesized on a large scale. Strings of Sb2Te3 nanoplatelets have been also synthesized by adjusting the reaction condition for Te nanorod precursor，which may be attributed to the nucleation and epitaxial growth of the Sb2Te3 nanoplatelets on the surface of the templates by the reaction of unconsumed K2TeO3 with Sb3+ ions in the solution. The thermoelectric transport properties of the pressed Sb2Te3 nanorods sample were measured. Enhanced seebeck coefficient and reduced thermal conductivity were observed. The high resistivity of the sample may be ascribed to unoptimized interconnections.