Journal
JOURNAL OF MATERIALS RESEARCH
Volume 26, Issue 15, Pages 1755-1761Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2011.158
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- National Science Council of Taiwan, Republic of China [NSC 95-2112-M-018-006-MY3, NSC 98-2112-M-018-005-MY3]
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We report fabrication of compacted Bi0.5Sb1.5Te3 nanoplatelets using hydrothermal methods followed by cold pressing and sintering in an evacuated ampoule at various temperature of 300-380 degrees C. The compacted Bi0.5Sb1.5Te3 sintered at 340 degrees C has the highest power factor of 11.6 mu W/cm.K-2 and its thermal conductivity is 0.37 W/m.K at 295 K, which is very low as compared to the typical value of 1 W/m.K. The resulting dimensionless figure of merit ZT is 0.93 at 295 K.
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