Silicon nanowire synthesis by a vapor-liquid-solid approach.
Synthesis of silicon nanowires is studied by using a vapor-liquid-solid growth technique. Silicon tetrachloride reduction with hydrogen in the gas phase is used with gold serving as catalyst to facilitate growth. Only a narrow set of conditions of SiCl4 concentration and temperature yield straight nanowires. High concentrations and temperatures generally result in particulates, catalyst coverage and deactivation, and coatinglike materials.
Mao
Aaron
A
NASA Ames Research Center, Center for Nanotechnology, Moffett Field, California 94035, USA.
Ng
H T
HT
Nguyen
Pho
P
McNeil
Melanie
M
Meyyappan
M
M
D003460:Crystallization / Q000379:methods*; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods; D043942:Nanotubes / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D044367:Phase Transition; D012825:Silicon / Q000032:analysis / Q000737:chemistry*; D012996:Solutions; D013696:Temperature; D014835:Volatilization
D012996:Solutions; D012825:Silicon