Fabrication and thermoelectric power factor of CoSb3 prepared using modified polyol process and evacuated- and-encapsulated sintering

Ahmad Gharleghi, Hon Zi Chang, Yin Chiao Chen, Yao Wei Yang, Chia Jyi Liu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Various reaction temperatures have been investigated to stabilize the CoSb3 phase obtained by a modified polyol process using a refluxing condenser. The resulting powders were cold-pressed and sintered in an evacuated-and- encapsulated ampoule for transport measurements. Single-phase CoSb3 could be produced for the reaction carried out at 448 K for a short duration of 15 min followed by evacuated-and-encapsulated sintering at 848 K for 5 h. In comparison with the sample sintered at 798 K, the sample sintered at 848 K exhibits lower resistivity and thermopower. Due to the sign crossover of the thermopower, the latter sample shows lower power factor for temperatures above 475 K.

Original languageEnglish
Pages (from-to)1564-1567
Number of pages4
JournalJournal of Electronic Materials
Volume42
Issue number7
DOIs
Publication statusPublished - 2013 Jul 1

Fingerprint

Polyols
Thermoelectric power
sintering
Sintering
Fabrication
fabrication
Powders
ampoules
condensers
Temperature
crossovers
electrical resistivity
temperature
polyol

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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abstract = "Various reaction temperatures have been investigated to stabilize the CoSb3 phase obtained by a modified polyol process using a refluxing condenser. The resulting powders were cold-pressed and sintered in an evacuated-and- encapsulated ampoule for transport measurements. Single-phase CoSb3 could be produced for the reaction carried out at 448 K for a short duration of 15 min followed by evacuated-and-encapsulated sintering at 848 K for 5 h. In comparison with the sample sintered at 798 K, the sample sintered at 848 K exhibits lower resistivity and thermopower. Due to the sign crossover of the thermopower, the latter sample shows lower power factor for temperatures above 475 K.",
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Fabrication and thermoelectric power factor of CoSb3 prepared using modified polyol process and evacuated- and-encapsulated sintering. / Gharleghi, Ahmad; Chang, Hon Zi; Chen, Yin Chiao; Yang, Yao Wei; Liu, Chia Jyi.

In: Journal of Electronic Materials, Vol. 42, No. 7, 01.07.2013, p. 1564-1567.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Gharleghi, Ahmad

AU - Chang, Hon Zi

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AU - Yang, Yao Wei

AU - Liu, Chia Jyi

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