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arXiv · 1003.0621

Synthesis and thermoelectric characterization of Bi2Te3 nanoparticles

Marcus Scheele·Niels Oeschler·Katrin Meier·Andreas Kornowski·Christian Klinke·Horst Weller
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Abstract

We report a novel synthesis for near monodisperse, sub-10-nm Bi2Te3 nanoparticles. At first, a new reduction route to bismuth nanoparticles is described which are applied as starting materials in the formation of rhombohedral Bi2Te3 nanoparticles. After ligand removal by a novel hydrazine hydrate etching procedure, the nanoparticle powder is spark plasma sintered to a pellet with preserved crystal grain sizes. Unlike previous works on the properties of Bi2Te3 nanoparticles, the full thermoelectric characterization of such sintered pellets shows a highly reduced thermal conductivity and the same electric conductivity as bulk n-type Bi2Te3.

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Marcus Scheele, Niels Oeschler, Katrin Meier, Andreas Kornowski, Christian Klinke, Horst Weller. 2010-03-02. Synthesis and thermoelectric characterization of Bi2Te3 nanoparticles. https://doi.org/10.1002/adfm.200901261

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