Effect of reactor pressure on catalyst composition and growth of GaSb nanowires

Xiaojun Weng, Robert A. Burke, Elizabeth C. Dickey, Joan Marie Redwing

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Au-assisted metalorganic chemical vapor deposition was employed for the synthesis of GaSb nanowires. X-ray energy dispersive spectrometry indicates that the composition of catalyst particles depends on the reactor pressure at constant growth temperature and V/III ratio. The catalyst particles were ternary Au-Ga-Sb alloys for nanowires grown at 100 and 200 Torr, suggesting a vapor-liquid-solid (VLS) nanowire growth mechanism. At 300 Torr, the catalyst particles were pure Ga and the self-catalytic VLS mechanism was responsible for the growth of the GaSb nanowires. The diameter and growth rate of the nanowires, as well as the contact angle between the catalyst particle and the nanowire, were found to be dependent on the composition of the catalyst particles.

Original languageEnglish (US)
Pages (from-to)514-519
Number of pages6
JournalJournal of Crystal Growth
Volume312
Issue number4
DOIs
StatePublished - Feb 1 2010

Fingerprint

Nanowires
nanowires
reactors
catalysts
Catalysts
Chemical analysis
Vapors
vapors
Metallorganic chemical vapor deposition
Liquids
Growth temperature
liquids
Contact angle
metalorganic chemical vapor deposition
synthesis
spectroscopy
x rays
temperature
energy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Weng, Xiaojun ; Burke, Robert A. ; Dickey, Elizabeth C. ; Redwing, Joan Marie. / Effect of reactor pressure on catalyst composition and growth of GaSb nanowires. In: Journal of Crystal Growth. 2010 ; Vol. 312, No. 4. pp. 514-519.
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Effect of reactor pressure on catalyst composition and growth of GaSb nanowires. / Weng, Xiaojun; Burke, Robert A.; Dickey, Elizabeth C.; Redwing, Joan Marie.

In: Journal of Crystal Growth, Vol. 312, No. 4, 01.02.2010, p. 514-519.

Research output: Contribution to journalArticle

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