Power factor improvement in hydrothermally synthesized Bi 2-xSb xTe 3 (x=1.5) - Carbon spheree composites

Chia-Jyi Liu, Gao Jhih Liu, Chi Jung Su

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report fabrication of compacted Bi 0.5Sb 1.5Te 3 composites by adding 1 wt% of carbon spheres in the hydrothermal synthesis. The processing parameter of sintering temperature is investigated in order to optimize the thermoelectric power factor of pressed Bi 0.5Sb 1.5Te 3 composites. As a result, we find that the composite sintered at 360 °C shows the best power factor performance among the composites and has a largest power factor of 15.4 μW/cm K 2 at 205 K and 13.5 μW/cm K 2 at 290 K. When compared with the samples without addition of carbon sphere in the hydrothermal synthesis, the composites sintered at 340 °C and 360 °C both surpass the largest power factor of 12.1 μW/cm K 2 at 280 K and 11.9 μW/cm K 2 at 290 K for the 340 °C-sintered counterpart.

Original languageEnglish
Pages (from-to)127-132
Number of pages6
JournalJournal of Solid State Chemistry
Volume193
DOIs
Publication statusPublished - 2012 Sep 1

Fingerprint

Carbon
composite materials
carbon
Composite materials
Hydrothermal synthesis
Thermoelectric power
synthesis
sintering
Sintering
Fabrication
fabrication
Processing
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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title = "Power factor improvement in hydrothermally synthesized Bi 2-xSb xTe 3 (x=1.5) - Carbon spheree composites",
abstract = "We report fabrication of compacted Bi 0.5Sb 1.5Te 3 composites by adding 1 wt{\%} of carbon spheres in the hydrothermal synthesis. The processing parameter of sintering temperature is investigated in order to optimize the thermoelectric power factor of pressed Bi 0.5Sb 1.5Te 3 composites. As a result, we find that the composite sintered at 360 °C shows the best power factor performance among the composites and has a largest power factor of 15.4 μW/cm K 2 at 205 K and 13.5 μW/cm K 2 at 290 K. When compared with the samples without addition of carbon sphere in the hydrothermal synthesis, the composites sintered at 340 °C and 360 °C both surpass the largest power factor of 12.1 μW/cm K 2 at 280 K and 11.9 μW/cm K 2 at 290 K for the 340 °C-sintered counterpart.",
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Power factor improvement in hydrothermally synthesized Bi 2-xSb xTe 3 (x=1.5) - Carbon spheree composites. / Liu, Chia-Jyi; Liu, Gao Jhih; Su, Chi Jung.

In: Journal of Solid State Chemistry, Vol. 193, 01.09.2012, p. 127-132.

Research output: Contribution to journalArticle

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