High thermoelectric performance of BiCuSeO prepared by solid state reaction and sol-gel process

Ankam Bhaskar, Rung Ting Lai, Kuo Chuan Chang, Chia-Jyi Liu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

BiCuSeO was synthesized by the conventional solid state reaction and the sol-gel method for comparative studies. The transport properties can be described using the single parabolic band with the assumption of acoustic phonon scattering as the dominant scattering mechanism. It is found that the material parameters depend on the synthesis procedures. The reduced Fermi energy of the sol-gel samples shifts to a position closer to the valence band edge as a result of an increase in carrier concentration. As a result, the power factor and zT of sol-gel sample is significantly enhanced as compared to the solid state reaction sample.

Original languageEnglish
Pages (from-to)100-104
Number of pages5
JournalScripta Materialia
Volume134
DOIs
Publication statusPublished - 2017 Jun 1

Fingerprint

sol-gel processes
Solid state reactions
Sol-gel process
Sol-gels
gels
solid state
Phonon scattering
Valence bands
Fermi level
Transport properties
Carrier concentration
Acoustics
Scattering
scattering
transport properties
valence
acoustics
shift
synthesis
energy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Cite this

Bhaskar, Ankam ; Lai, Rung Ting ; Chang, Kuo Chuan ; Liu, Chia-Jyi. / High thermoelectric performance of BiCuSeO prepared by solid state reaction and sol-gel process. In: Scripta Materialia. 2017 ; Vol. 134. pp. 100-104.
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High thermoelectric performance of BiCuSeO prepared by solid state reaction and sol-gel process. / Bhaskar, Ankam; Lai, Rung Ting; Chang, Kuo Chuan; Liu, Chia-Jyi.

In: Scripta Materialia, Vol. 134, 01.06.2017, p. 100-104.

Research output: Contribution to journalArticle

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