Growth of amorphous silicon nanowires
Growth of amorphous silicon nanowires via a solid–liquid–solid mechanism
... on a large area 10= 10 mm of 111 Si
substrate after a 1 h period of growth. EDS analysis
Ž.
inset proved that the nanowires consist mainly of
silicon. A trace amount of oxygen exists in the
a-SiNWs, ... consists of nanoparticles of a few
Fig. 2. Schematic depiction of SiNW growth by the SLS mecha-
Ž. Ž .
nism: a deposition of a thin layer of Ni on the Si 111 substrate;...
Growth of amorphous silicon nanowires
... grown silicon
nanowires are of an amorphous state and some of nanowires appear to bifurcate in the vertically growth process. The
eect of H
2
gas etchings on the catalytic size and the eect of ... of the nanowires is 30 nm. The alignment
of the nanowires is improved.
Compared with our previously work [17], we
got amorphous aligned silicon nanowires instead
o...
Direct growth of amorphous silica nanowires by solid state transformation of sio2 films
... formation of a titanium oxide (TiO
x
) phase
by removal of oxygen from the silica layer [9]. The re-
duction of TiN seems to be a critical factor in the growth
kinetics of a-SiONWs. The growth of silica ... suppresses the
decomposition of TiN, as a result, it limits the growth of
a-SiONWs nanowires by the mechanism. Oxygen seems
Fig. 4. (a) A TEM photograph of a cross...
Controlled growth of oriented amorphous silicon nanowires via a solid–liquid–solid (SLS) mechanism
... in
the growth of SiNWs. Because this growth process
involves solid–liquid–solid phases, it is named as a
SLS growth, which is in fact an analogy of the VLS
mechanism. The growth process of the ... a
large area (10 mm × 10 mm) of 111 Si substrate. The
nanowires grew directly on the substrate. It is visible
that the deposit consists of pure SiNWs. The growth
rate of the...
Polymer assisted synthesis of aligned amorphous silicon nanowires and their core shell structures with au nanoparticles
... Yang
a,
*
a
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
b
Graduate School of the Chinese Academy of Sciences, Beijing, ... and the high dispersion of Au nanoparticles on the surface of the SiNWs
without any aggregation. The formation of the SiNWs was explained on the basis of the reactio...
Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... agglomerated clusters consisting
of high density of nanowires. The magnified view of a single
cluster is depicted in the inset of Fig. 2(d). These observations
suggest that growth of nanowires in the present ... source for silicon
nanowires growth.
Fig. 3(a) shows a typical TEM micrograph of nanowires
deposited on Ni-coated Si wafers. The nanowires have diameter
in t...
Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport
... at% of O, 41.87 at% of Si,
8.66 at% of V, 0.74 at% of Zn, and no Cl, for the catalyst
tip in Fig. 2(b), and 60.28 at% of O, 39.40 at% of Si,
0.32 at% of V, and no Zn or Cl, for the long nanowires ... that the growth process of amorphous
silica nanowires is catalyst-assisted.
EDX was applied to examine the chemical composition
of the as-grown nanowires. Fig. 3(a) sho...
Preparation and photoluminescence properties of amorphous silica nanowires
... since little droplets can be seen at the tops
of the nanowires [17]. The growth of the nanowires
Fig. 2. XPS of the sample. (a) survey spectrum of the sample;
(b) Si2p binding energy spectrum; ... was observed in oxidized porous silicon
and annealed SiO
2
[15]. The PL spectrum is also
dierent from that of oxidized Si nanowires [16].
The growth process of the nanowire...
Tailoring of amorphous siox nanowires grown by rapid thermal annealing
... that the Si L
23
ELNES of amorphous silicon monoxide appears to be a
superposition of the spectra of elemental silicon and of
SiO
2
[14]. The onset of the ne ar-edge structure of the nano-
wire is ... nanowire growth.
In this Letter, we demonstrate the growth of Pt-catalyzed
SiO
x
nanowires by a simple procedure, i.e., rapid thermal
annealing. The effect of growth...
Growth kinetics of silicon nanowires by platinum assisted vapour–liquid–solid mechanism
... degrade the performance of Si
nanowire devices even if it diffuses into the nanowires. Some
studies have reported on the growth of Si nanowires using Pt
with a precursor of SiH
4
or SiCl
4
[4–6]. ... HRTEM image of Si nanowire using Au. (d) HRTEM image of Si nanowire using Pt. Both were single crystal. (e) EDS line mapping of Si
nanowires using Au catalyst. (f) EDS line map...
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