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Control and Assessment of Structure and Composition in Bismuth Telluride Nanowire Arrays

Published online by Cambridge University Press:  21 March 2011

M. S. Sander ,
A. L. Prieto ,
R. Gronsky ,
T. Sands  and
A. M. Stacy
M. S. Sander
Affiliation:
Department of Chemistry, University of California, Berkeley, CA 94720
A. L. Prieto
Affiliation:
Department of Chemistry, University of California, Berkeley, CA 94720
R. Gronsky
Affiliation:
Department of Materials Science & Engineering, University of California, Berkeley, CA 94720
T. Sands
Affiliation:
Department of Materials Science & Engineering, University of California, Berkeley, CA 94720
A. M. Stacy
Affiliation:
Department of Chemistry, University of California, Berkeley, CA 94720
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Abstract

Due to effects of reduced dimensionality, Bi2Te3 nanowires are predicted to have increased thermoelectric efficiency relative to bulk Bi2Te3, one of the most efficient thermoelectric materials known. High-density arrays of nanowires have desirable characteristics for accessing nanowire properties in potential applications and also allow for facile nanowire property assessment. Here we describe a fabrication method to produce Bi2Te3 nanowire arrays by direct current electrochemical deposition into porous anodic alumina templates. The characteristics of the arrays have been assessed to determine the composition and structure in the arrays as well as in individual nanowires. Thefabricated arrays have a high-density of uniform diameter (∼40nm), high aspect ratio wires that are stoichiometric, polycrystalline Bi2Te3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 676: Symposium Y – Synthesis, Functional Properties and Applications of Nanostructures , 2001 , Y8.35
Copyright
Copyright © Materials Research Society 2001

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References

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