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

... Characterization of Tin- catalyzed silicon nanowires synthesized by the hydrogen radical- assisted deposition method Minsung Jeon ⁎ , Hisashi Uchiyama, Koichi Kamisako Department of Electronic ... 2008 Keywords: Tin catalyst Silicon nanowires Hydrogen radicals VLS mechanism Phase diagram Tin- catalyzed silicon nanowires (SiNWs) were synthesized at...

Ngày tải lên: 16/03/2014, 15:10

... and ther- mal evaporation [14±17] are two methods nor- mally used for the synthesis of SiNWs. The key point in these two methods is the formation of a sucient amount of silicon atoms and/or silicon oxide ... structure of SiNWs depend sensitively on their composition, as well as the temperature and other parameters of the synthetic process. The experimental results...

Ngày tải lên: 16/03/2014, 15:06

... for the NW growth of various materials [3]. In metal island -catalyzed growth of Si-NWs via the VLS processes, the diameter and alignment of the NWs can be readily controlled by the size of the ... seeds on the substrate. After the Si-NWs seeds are nucleated below the droplets, the free energy of the liquid–solid system is determined by the surface energ...

Ngày tải lên: 16/03/2014, 15:15

... 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 oxide exceeded the growth rate of crystal sili...

Ngày tải lên: 16/03/2014, 15:09

... Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method Enlei Zhang a , Yuanhong Tang a,b, Ã , Yong Zhang a , Chi Guo a a College of ... because of AAO template. The synthesized SiC nanowires were of high yield without much bulk. The synthesized nanowires consist about 50 nm diameter core wrapped with a...

Ngày tải lên: 16/03/2014, 15:21

... single-wall carbon nanotubes 12 , 34 were first synthesized by this method. The starting materials for deposition of SiNWs by the laser abla- tion method include Si powder mixed with catalyst wx ... consists of the 111 , Ž. Ž. 220 and 311 rings of silicon. The other corre- Ž.Ž. Ž. sponds to the 111 , 220 and 311 rings of b-SiC. This confirms that the sample is...

Ngày tải lên: 16/03/2014, 15:08

... 20 0-nm-thick silicon on insulator thin films [8–10]. Simulation of the emission spectrum of an ehp by a convolu- tion product of the density of states of the carriers affected by the Fermi–Dirac ... ction of the pump power is correlated to a free carrier recombination. Furthermore, the spatial confinement of the carriers in SiNWs could explain the difference...

Ngày tải lên: 16/03/2014, 15:19

... nanowires (SiNWs) with a diameter of ∼30 nm and length of tens of micrometers on Al 2 O 3 templates and silicon wafers were synthesized by the thermal evaporation of silicon monoxide (SiO). The ... show that the SiNWs were crystallized well. The top view of the SiNWs on the dierent substrates observed by SEM is shown in Fig. 2. The plenty of the SiNWs...

Ngày tải lên: 16/03/2014, 15:21

... report the structure of alumina nanowires (ANWs) synthesized by the chemical etching of an anodic alumina membrane (AAM). The AAM was prepared by the two-step anodization method followed by the ... etching rates of the various oxide layers of the AAM, as determined by their anion impurity concentration. In this work, we report the structure of ANWs syn...

Ngày tải lên: 20/03/2014, 13:08

... characteristic of molecular chaperones and shown here to be shared by apoferritin and ferritin. This is the first report that apoferritin ⁄ ferritin may protect cells from stress other than by iron sequestration. ... in part on the regulated synthesis of artemin, a ferritin superfamily member. The objective of this study was to better understand artemin function, and to this en...

Ngày tải lên: 16/03/2014, 11:20