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Science 11 February 2000:
Vol. 287. no. 5455, pp. 1024 - 1027
DOI: 10.1126/science.287.5455.1024
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Reports
CsBi4Te6: A High-Performance Thermoelectric Material for Low-Temperature Applications
Duck-Young Chung,
1
Tim Hogan,
2
Paul Brazis,
3
Melissa Rocci-Lane,
3
Carl Kannewurf,
3
Marina Bastea,
4
Ctirad Uher,
4
Mercouri G. Kanatzidis
1*
Thermoelectric (Peltier) heat pumps are capable of refrigerating
solid or fluid objects, and unlike conventional vapor compressor systems, they can be miniaturized without loss of efficiency. More
efficient thermoelectric materials need to be identified, especially
for low-temperature applications in electronics and devices. The
material CsBi4Te6 has been synthesized and its
properties have been studied. When doped appropriately, it exhibits a
high thermoelectric figure of merit below room temperature
(ZTmax ~0.8 at 225 kelvin). At cryogenic
temperatures, the thermoelectric properties of
CsBi4Te6 appear to match or exceed those of
Bi2-xSbxTe3-ySey alloys.
1 Department of Chemistry, Michigan State
University and Center for Fundamental Materials Research, East Lansing,
MI 48824, USA.
2 Electrical and Computer Engineering
& Materials Science and Mechanics, Michigan State University, East
Lansing, MI 48824, USA.
3 Department of Electrical
Engineering and Computer Science, Northwestern University,
Evanston, IL 60208, USA.
4 Department of Physics,
University of Michigan, Ann Arbor, MI 48109, USA.
*
To whom correspondence should be addressed.
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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit.
- K. F. Hsu, S. Loo, F. Guo, W. Chen, J. S. Dyck, C. Uher, T. Hogan, E. K. Polychroniadis, and M. G. Kanatzidis (2004)
Science
303, 818-821
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- Indium-cadmium-oxide films having exceptional electrical conductivity and optical transparency: Clues for optimizing transparent conductors.
- A. Wang, J. R. Babcock, N. L. Edleman, A. W. Metz, M. A. Lane, R. Asahi, V. P. Dravid, C. R. Kannewurf, A. J. Freeman, and T. J. Marks (2001)
PNAS
98, 7113-7116
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