Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-25T17:54:27.120Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis of Single Crystal Bismuth-Telluride and Lead-Telluride Nanowires for New Thermoelectric Materials

Published online by Cambridge University Press:  21 February 2011

Q. Wei  and
C.M. Lieber
Q. Wei
Affiliation:
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138
C.M. Lieber
Affiliation:
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138
Get access

Abstract

Dimensionality can play an important role in determining the properties of materials. In the case of thermoelectric materials, it has been proposed that one-dimensional quantum wires, or nanowires, and two-dimensional superlattices could exhibit substantially higher efficiencies compared to the corresponding bulk, three-dimensional solids. To explore such predictions we have initiated a program directed towards the controlled growth of nanowires, and herein, we report the synthesis of single crystal Bi2Te3 and PbTe nanowires by a pulsed laser ablation method. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that Bi2Te3 wires 80 nm to 200 nm in diameter and lengths exceeding 10 microns, and PbTe wires 25 nm to 60 nm in diameter and lengths to 2 microns can be readily produced by the laser ablation method. High-resolution TEM and electron diffraction show that Bi2Te3 nanowires are single crystals with wire axes along the <110> crystal direction. TEM and electron diffraction measurements also show that the PbTe nanowires are single crystals with a <100> growth axis. The transport properties of these new nanowire materials will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 219
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Mahan, G., Sales, B. and Sharp, J., Physics Today, 50(3), p. 42 (1997).Google Scholar
2. Goldsmid, H.J., Thermoelectric Refrigeration, Plenum, New York, 1964.Google Scholar
3. Mahan, G., Solid State Physics, 51, p. 82 (1998).Google Scholar
4. Hicks, L.D. and Dresselhaus, M.S., Phys. Rev. B, 47(24), p. 16,631 (1993).Google Scholar
5. Broido, D.A. and Reinecke, T.L., Appl. Phys. Lett., 67(1), p. 100 (1995).Google Scholar
6. Morales, A. and Lieber, C.M., Science, 279, p. 208 (1998).Google Scholar
7. Lieber, C.M., Solid State Commun., 107, p. 607 (1998).Google Scholar
8. Hu, J., Odom, T.W. and Lieber, C.M., Acc. Chem. Res., 32, p. 435 (1999).Google Scholar