Morphological control of Bi2Te3 nanotubes and their thermoelectric properties

Ha Yeong Kim, Mi Kyung Han, Sung Jin Kim

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Highly uniform Bi2Te3 nanotubes with various morphologies are synthesized via a solution process using Te nanowires as a sacrificial template. The morphology of Bi2Te3 nanotubes can be controlled by varying the solvent system. The reaction between Bi and Te in triethylene glycol (TEG) produces Bi2Te 3 nanotubes with plate-like surface morphology, whereas rough surface morphology of the Bi2Te 3 nanotubes is obtained by the reaction in ethylene glycol (EG). The crystal structures and morphologies of nanotubes are investigated X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM). The effect of solvent on the evolution of morphology of the Bi2Te 3 nanotubes is investigated. The effect of surface morphology on the thermoelectric properties is discussed.

Original languageEnglish
Pages (from-to)6044-6047
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume15
Issue number8
DOIs
StatePublished - 1 Jan 2015

Keywords

  • 1D Nanostructure
  • BiTe
  • Chemical Synthesis
  • Kirkendall Effect
  • Thermoelectric

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