Bismuth telluride nanotubes and the effects on the thermoelectric properties of nanotube-containing nanocomposites
- 3 February 2005
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 86 (6), 062111
- https://doi.org/10.1063/1.1863440
Abstract
Nanotubes of quasilayered bismuth telluride compound were prepared by hydrothermal synthesis. Nanotubes have diameters smaller than 100nm and spiral tube-walls. The low-dimensional morphology and hollow structure enable bismuth telluride nanotubes to be a potential thermoelectric material with a high figure of merit due to the efficient phonon blocking effect. The experimental results show that the addition of nanotubes leads to a remarkable decrease in the thermal conductivity with the electrical conductivity much less affected and thus to an increase in the figure of merit of the Bi2Te3-based material.Keywords
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