Morphology control of layer-structured gallium selenide nanowires

Hailin Peng, Stefan Meister, Candace Chan, Xiao Feng Zhang, Yi Cui

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Layer-structured group III chalcogenides have highly anisotropic properties and are attractive materials for stable photocathodes and battery electrodes. We report the controlled synthesis and characterization of layer-structured GaSe nanowires via a catalyst-assisted vapor-liquid-solid (VLS) growth mechanism during GaSe powder evaporation. GaSe nanowires consist of Se-Ga-Ga-Se layers stacked together via van der Waals interactions to form belt-shaped nanowires with a growth direction along the [11-20], width along the [1-100], and height along the [0001] direction. Nanobelts exhibit a variety of morphologies including straight, zigzag, and saw-tooth shapes. These morphologies are realized by controlling the growth temperature and time so that the actual catalysts have a chemical composition of Au, Au-Ga alloy, or Ga. The participation of Ga in the VLS catalyst is important for achieving different morphologies of GaSe. In addition, GaSe nanotubes are also prepared by a slow growth process.

Original languageEnglish
Pages (from-to)199-203
Number of pages5
JournalNano Letters
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 2007

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gallium selenides
Gallium
Nanowires
nanowires
Catalysts
Vapors
catalysts
Nanobelts
Chalcogenides
Photocathodes
Liquids
Growth temperature
vapors
Nanotubes
chalcogenides
Evaporation
photocathodes
teeth
liquids
electric batteries

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Morphology control of layer-structured gallium selenide nanowires. / Peng, Hailin; Meister, Stefan; Chan, Candace; Zhang, Xiao Feng; Cui, Yi.

In: Nano Letters, Vol. 7, No. 1, 01.2007, p. 199-203.

Research output: Contribution to journalArticle

Peng, H, Meister, S, Chan, C, Zhang, XF & Cui, Y 2007, 'Morphology control of layer-structured gallium selenide nanowires', Nano Letters, vol. 7, no. 1, pp. 199-203. https://doi.org/10.1021/nl062047+
Peng, Hailin ; Meister, Stefan ; Chan, Candace ; Zhang, Xiao Feng ; Cui, Yi. / Morphology control of layer-structured gallium selenide nanowires. In: Nano Letters. 2007 ; Vol. 7, No. 1. pp. 199-203.
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