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J. Vac. Sci. Technol. B 15, 554 (1997); http://dx.doi.org/10.1116/1.589291 (4 pages)
Growth of silicon nanowires via gold/silane vapor–liquid–solid reaction
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Add to FacebookSilicon nanowires (whiskers) have been grown on Si(111) via the vapor–liquid–solid (VLS) reaction using silane as the Si source gas and Au as the mediating solvent. The silane partial pressure and temperature ranges were 0.01–1 Torr and 320–600 °C, respectively. Growth at high partial pressure and low temperature leads to the growth of Si nanowires as thin as 10 nm. These wires are single crystals but exhibit growth defects such as bending and kinking. Lowering the silane partial pressure leads to an increase in the wire width and a reduction in the tendency to form growth defects. At low pressure, 40–100 nm wide well-formed wires have been grown at 520 °C. The VLS reaction using silane allows the growth of Si wires, which are significantly thinner than those grown previously using SiCl4. © 1997 American Vacuum Society.
© 1997 American Vacuum Society
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Received 22 August 1996
Accepted 7 February 1997
Accepted 7 February 1997
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