Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method

... Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method Enlei Zhanga, Yuanhong Tanga,b,Ã, Yong Zhanga, Chi GuoaaCollege of ... temperature to adjust the pore diameter and remove the barrier layer at the bottom of nanoholes.2.2. Synthesis of SiC nanowires The preparation apparatus for synthesis of SiC nanowires is aconventional ... results[5] show that the elasticity and strength of SiC nanowires areconsiderably greater than those of SiC whiskers and bulk SiC.A variety of methods on the synthesis of SiC nanowires havebeen...

Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide

... Large-scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxideSanjay K. Srivastavaa,Ã, ... 2009PACS:61.46.–w81.07.–bKeywords: Silicon monoxide Silicon oxide nanowires Thermal evaporation Photoluminescence abstractA single step non-catalytic process based on thermal evaporation of silicon monoxide has ... characterize the morphology and structure of the material. The as- synthesized nanowires had amorphous structures with diameters in the range 30–100 nm and hundreds of micrometers in length. The EDAX...

Preparation and photoluminescence properties of amorphous silica nanowires

... silica nanowires (SiONWs) have been synthesized by carbothermal reduction reactionbetween silicon dioxide and active carbons. Transmission electron microscopy (TEM) image shows the formation of the nanowires ... that of oxidized Si nanowires [16]. The growth process of the nanowires can beexplained by the vapor±liquid±solid (VLS) mech-anism, since little droplets can be seen at the tops of the nanowires ... micro-graphs (inset) show that the nanowires are amor-phous. Fig. 1(b) indicates the amoeba-shape of the nanowires, with the diameter of about 70 nm and alength up to tens of micrometers. Fig. 1(c)...

Characterization of tin catalyzed silicon nanowires synthesized by the hydrogen radical assisted deposition method

... FE-SEM images of the as -synthesized SiNWs at hydrogen gas ﬂow of (a) 130 sccm, (b) 150 sccm and (c) 180 sccm. All the scale bars represent 2.5 µm. (d) XRD patterns of the as- synthesized SiNWs ... manyoriﬁces, and it is reacted with hydrogen radicals generated by microwave in the quartz discharge tube. In order to investigate the effect of synthesis conditions, SiNWs are synthesized using the hydrogen ... Characterization of Tin-catalyzed silicon nanowires synthesized by the hydrogenradical-assisted deposition method Minsung Jeon⁎, Hisashi Uchiyama, Koichi KamisakoDepartment of Electronic and Information...

Tailoring of amorphous siox nanowires grown by rapid thermal annealing

... reported that the Si L23ELNES of amorphous silicon monoxide appears to be asuperposition of the spectra of elemental silicon and of SiO2[14]. The onset of the ne ar-edge structure of the nano-wire ... connectedwith the size of the Pt catalyst [12,13].Fig. 2a shows the TEM micrograph of the nanowiregrown after RTA at 900 °C. The seed particles, for the most part, are attached to the top of the grown nanowires. However, ... result, it is evi-dent that the growth of the nanowire is driven by the VLS mechanism. Moreover, the length of the nanowireis around 500 nm. The diameter of the nanowires rangesfrom 50 nm to...

Characteristics of siox nanowires synthesized via the thermal heating of cu coated si substrates

... the agglomeration of Cu layer and thus the formation of the island-like structures with a wide interspace. Therefore, nanowires may be formed independently from the locallypresent small islands. ... the growth process and toclearly understand the synthesis mechani sm.Fig. 4 shows the PL spectrum of the SiOx nanowires measured at room temperature, which is an apparent broademission band ... synthesis of any inorganic nanostruc-ture on Cu substrates has not been reported to date.In this paper, for the ﬁrst time we report the production of SiOx nanowires by the simple heating of...

hydrothermal synthesis and photoluminescence of tio2 nanowires

... indi-cated the nanowires are very copious in quantity and quite clean with no contamination attached totheir surface. On the other hand, some of the nanowires aggregated into bundles in the solutionFig. ... 300–304 301or during the preparation of SEM sample. Thismight explain why some of the nanowires lookedwider than others.TEM and HRTEM were used to study the ﬁnestructure of the nanowires. Fig. ... inour experiments. The growth of single-crystalline TiO2 nanowires in the hydrothermal condition is achieved for the ﬁrst time. Although the exact growth mechanism of the TiO2 nanowires is not...

Morphology and growth mechanism study of self assembled silicon nanowires synthesized by thermal evaporation

... [10±13] and ther-mal evaporation [14±17] are two methods nor-mally used for the synthesis of SiNWs. The keypoint in these two methods is the formation of asucient amount of silicon atoms and/ or ... SiNWsreported before [5,6]. The average diameter of the main branch of SiNWs is in the range 40±60 nm, and that of the sub-branch of SiNWs is 30±40 nm. The bulb on the tip of the sub-branch is less ... Morphology and growth mechanism study of self-assembled silicon nanowires synthesized by thermal evaporation Z. Zhang1, X.H. Fan, L. Xu, C.S. Lee, S.T. Lee*Center of Super-Diamond and Advanced...

Temperature dependence of morphology and diameter of silicon nanowires synthesized by laser ablation

... in the formation of chains of silicon nano-particles. The formation of the kinks of silicon nanoparticle chains resulted from a change of growth direction of the SiNWs. We examined the kinks by ... crystal silicon core and outer layer of silicon oxide. When the forming rate of outer layer of silicon oxideexceeded the growth rate of crystal silicon, outerlayer of silicon oxide will surround the ... HRTEM image of the interface between the crystal silicon and amorphous silicon oxides,along the axis of the branch of the octopus-shaped wires .The arrow shown in Fig. 1dindicates the interface.Fig....

Formation of silicon oxide nanowires directly from au si and pd–au si substrates

... out for analysis of the morphology and atomic composition of the grown nanowires. 3. Results and discussionFig. 1 shows FE-SEM images revealing the generalmorphologies of the thermally heated ... SiOx nanowires grown on the Au/Sisubstrate have an atomic ratio of Si/O higher than the 12 of SiO2. On the other hand, the atomic ratio of Si/O in the SiOx nanowires formed on the Pd–Au/Si substrate ... substrate by heating the Au/Si substrateat 1000 1C. On the other hand, the formation of Pd–Aunanoislands with a uniform size distribution (a diameter of around 100 nm) by heating the Pd–Au/Si substrate...

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