Bi-Te Core/Shell nanowires synthesis based on On-fiim formation of nanowires method for thermoelectric applications

Joohoon Kang, Jinhee Ham, Jong Wook Roh, Jin Seo Noh, Wooyoung Lee

Research output: Contribution to journalArticle

Abstract

For an enhanced thermoelectric performance, one-dimensional heterostructure nanowires were created that consisted of aBi core and Te shell. The structure was fabricated by depositing Te in-situ onto a Bi nanowire grown by our unique OFF-ON (on-film formation of nanowires) method. After examining a cross-sectional TEM image, it was found that diffusive interface was formed between Bi and Te. Selected area electron diffraction revealed that the crystallinity of the Te shell was some what lower compared to the highly single-crystalline Bi core. The Bi-Te core/shell nanowires can be a smart structure that suppresses phonon transport by several scattering mechanisms, making the OFF-ON method the simplest way to realize that structure.

Original languageEnglish
Pages (from-to)445-448
Number of pages4
JournalJournal of Korean Institute of Metals and Materials
Volume48
Issue number5
DOIs
Publication statusPublished - 2010 May 1

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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