Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1863440
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Nanotubes of quasilayered bismuth telluride compound were prepared by hydrothermal synthesis. Nanotubes have diameters smaller than 100 nm 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. (C) 2005 American Institute of Physics.
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