Colloidal synthesis of germanium nanorods

Aaron Michael Chockla, Justin T. Harris, Brian A. Korgel

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

A colloidal synthesis of crystalline germanium (Ge) nanorods is reported. Diphenylgermane (DPG) is decomposed in a high boiling solvent in the presence of bismuth (Bi) nanocrystals and trioctylphosphine oxide (TOPO). The Bi nanocrystals induce solution-liquid-solid (SLS) growth of the Ge nanorods, and TOPO serves as a capping ligand to prevent aggregation. The resulting nanorods are crystalline, predominantly growing in the 〈111〉 crystallographic direction, with an average diameter of 10 nm. The average length could be varied from 60 to 170 nm by decreasing the ratio of Bi to Ge in the reaction. The addition of poly(vinylpyrrolidinone) /hexadecene (PVP/HDE) copolymer led to branched nanorods.

Original languageEnglish (US)
Pages (from-to)1964-1970
Number of pages7
JournalChemistry of Materials
Volume23
Issue number7
DOIs
StatePublished - Apr 12 2011

Keywords

  • colloids
  • Germanium
  • nanomaterials
  • nanorods
  • solution-liquid-solid growth

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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