Improvement of thermoelectric power factor of hydrothermally prepared Bi 0.5Sb 1.5Te 3 compared with its solvothermally prepared counterpart

Chia Jyi Liu, Gao Jhih Liu, Chun Wei Tsao, Yo Jhih Huang

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We report on the successful hydrothermal synthesis of Bi 0.5Sb 1.5Te 3, using water as the solvent. The products of the hydrothermally prepared Bi 0.5 Sb 1.5Te 3 were hexagonal platelets with edges of 200-1500 nm and thicknesses of 30-50 nm. Both the Seebeck coefficient and electrical conductivity of the hydrothermally prepared Bi 0.5Sb 1.5Te 3 were larger than those of the solvothermally prepared counterpart. Hall measurements of Bi 0.5Sb 1.5Te 3 at room temperature indicated that the charge carrier was p-type, with a carrier concentration of 9.47 × 10 18 cm -3 and 1.42 × 10 19 cm -3 for the hydrothermally prepared Bi 0.5Sb 1.5Te 3 and solvothermally prepared sample, respectively. The thermoelectric power factor at 290 K was 10.4 μW/cm K 2 and 2.9 μW/cm K 2 for the hydrothermally prepared Bi 0.5Sb 1.5Te 3 and solvothermally prepared sample, respectively.

Original languageEnglish
Pages (from-to)1499-1503
Number of pages5
JournalJournal of Electronic Materials
Volume38
Issue number7
DOIs
Publication statusPublished - 2009 Jul 1

    Fingerprint

All Science Journal Classification (ASJC) codes

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

Cite this