Selective growth of ag nanowires on Si(111) surfaces by electroless deposition.
Electroless deposition of Ag on atomically flat H-terminated Si(111) surfaces in aqueous alkaline solutions containing Ag ions produced two different sizes of Ag nanowires along atomic step edges: (1) a narrow nanowire of 10 nm in width and 0.5 nm in height and (2) a wide nanowire of 35 nm in width and 11 nm in height. The narrow and wide nanowires were formed by immersion in the solutions containing less than 1 ppb and 8 ppm dissolved-oxygen concentrations, respectively. This result indicates that the dissolved oxygen initiates the formation of Ag nucleation sites and that the fabrication method has a possibility of controlling the size of Ag nanowires.
Tokuda
Norio
N
Sasaki
Naoyuki
N
Watanabe
Hidenobu
H
Miki
Kazushi
K
Yamasaki
Satoshi
S
Hasunuma
Ryu
R
Yamabe
Kikuo
K