Bismuth seed-assisted liquid-phase synthesis of germanium telluride nanowires

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Abstract

GeTe (GT) nanowires (NWs) were successfully synthesized using Bi seeds by a low-temperature solution-based process. Scanning electron microscopy (SEM) images show formation of straight and cylindrical shaped GT NWs together with spherical shaped Te particles. GT NWs were ∼50-100 nm in diameter and ∼2 μm in length. X-ray diffraction (XRD) patterns of as-prepared samples show formation of hexagonal Te, orthorhombic GeTe, and amorphous phase in the samples. The [008] growth of orthorhombic GeTe NWs was identified using high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). Ostwald ripening was proposed as a growth mechanism of GT NWs. Differential scanning calorimetry (DSC) results on the samples reveal an apparently decreased melting point of GT.

Original languageEnglish
Pages (from-to)938-941
Number of pages4
JournalCrystal Growth and Design
Volume9
Issue number2
DOIs
Publication statusPublished - 2009 Feb

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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