In:
Journal of Applied Physics, AIP Publishing, Vol. 105, No. 9 ( 2009-05-01)
Abstract:
Nanocrystalline Bi2Te3 bulks were synthesized via a nanostructuring method that included steps of ball milling, cold pressing, and sintering. In the temperature range of 325–525 K, nanocrystalline Bi2Te3 bulks exhibit good thermoelectric properties with a peak ZT of 0.94. The experimental results suggest that the partially coherent boundaries allow the maintenance of low grain growth rate and low resistivity. The enhancement of ZT comes from a large reduction in the phonon thermal conductivity and a strong suppression of the bipolar effect at high temperature.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2009
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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