Vapor-solid-solid synthesis of Ge nanowires from vapor-phase-deposited manganese germanide seeds

Jessica L. Lensch-Falk, Eric R. Hemesath, Francisco J. Lopez, Lincoln James Lauhon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

We report the sequential synthesis of solid-phase manganese germanide seed particles and crystalline Ge nanowires using low-pressure thermal chemical vapor deposition. Mn was deposited on inert substrates from a gas-phase precursor. Mn particles were converted to solid manganese germanide particles upon exposure to germane gas, and these seed particles directed the one-dimensional growth of Ge nanowires. Growth rates for this vapor-solid-solid process approached 200 nm per minute, and the diameter distribution was tightly clustered around 18 nm. This approach to Ge nanowire growth has at least three attractive features: (1) the seed particle is not Au, avoiding the potentially negative influence of Au impurities on electrical properties; (2) the vapor-phase deposition and self-assembly of the seed greatly simplifies the nanowire synthesis process; and (3) the self-assembled seed naturally produces a narrow distribution of nanowire diameters.

Original languageEnglish (US)
Pages (from-to)10670-10671
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number35
DOIs
StatePublished - Sep 5 2007

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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