sub diffraction laser synthesis of silicon nanowires
Carbon assisted synthesis of silicon nanowires
... 2003 Abstract Carbon-assisted synthesis of silicon nanowires has been accomplished with silicon powders as well as solid sub- strates. The method involves heating an intimate mixture of silicon powder and ... char- acteristic of cubic silicon with a small impurity of silica. Reaction of silicon powder with activated car- bon in the absence of H 2 , by procedure (ii...
Ngày tải lên: 16/03/2014, 15:04
Synthesis of silicon nanowires after hydrogen radical treatment
... Synthesis of silicon nanowires after hydrogen radical treatment Minsung Jeon ⁎ , Koichi Kamisako Department of Electronic and Information Engineering, Tokyo University of Agriculture ... 2007 Accepted 16 May 2008 Available online 24 May 20 08 Keywords: Silicon nanowires Hydrogen radicals Metal oxide film Nanoparticles Silicon nanowires (SiNWs) were synthesized through the h...
Ngày tải lên: 16/03/2014, 15:13
Temperature dependence of morphology and diameter of silicon nanowires synthesized by laser ablation
... oxide exceeded the growth rate of crystal silicon, outer layer of silicon oxide will surround the crystal sil- icon. As a result, the growth of crystal silicon ceased and silicon oxide of outer layer coalesced together ... The peculiar feature of the branch suggests that there may exist a competitive growth between crystal silicon core and outer layer of silicon oxide....
Ngày tải lên: 16/03/2014, 15:09
Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application
... silicon nanowires were synthesized for solar cells application. Voluminous silicon nanowires were fabricated on single crystalline silicon wafer. Optical reflectance and solar cell efficiency of ... the synthesized silicon nanowires were explored. The reflectance of as-synthesized silicon nanowires was obtained approximately 5% in the short wavelength region (λb 500 nm). A...
Ngày tải lên: 16/03/2014, 15:12
Growth kinetics of silicon nanowires by platinum assisted vapour–liquid–solid mechanism
... formed when using Fig. 1. Synthesis of Si nanowires using Au and Pt as catalysts. (a) Vertically-aligned Si nanowires using Au. (b) Vertically-aligned Si nanowires using Pt. Si nanowires using Pt are ... 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 lin...
Ngày tải lên: 16/03/2014, 15:05
Optical spectroscopy of silicon nanowires
... properties of the SiNWs synthesized by laser ablation at high temperature, including the Raman scattering behavior and the temperature dependence of PL. The synthesis of the SiNWs was carried out by laser ... USA b Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan Received 16 December 2002; in final form 13 March 2003 Abstract Silicon nanowires (SiNWs...
Ngày tải lên: 16/03/2014, 15:06
Temperature dependence of the quality of silicon nanowires produced over a titania supported gold catalyt
... °C. Silicon nanowires produced at this temperature have a well-crystal- lized silicon core with a very thin amorphous sili- con dioxide outer layer. The length of the nanowires is in the range of ... and quality of the products obtained as a function of temperature. Ó 2003 Elsevier B.V. All rights reserved. 1. Introduction Silicon nanowires (SiNWs) have been widely studied...
Ngày tải lên: 16/03/2014, 15:09
A study in the growth mechanism of silicon nanowires with or without metal catalyst
... typical sample of synthesis of SiNWs without a metal catalyst [17]. In this case, the SiO x vapor decomposes into Si atoms, which act as the nuclear of SiNWs covered by shells of silicon oxide. Metal-assisted ... the catalytic growth. However, the growth of silicon nanowires with sulfide is chiefly affected by the compound decomposition, gas stream, and temperature differenc...
Ngày tải lên: 16/03/2014, 15:09
Infrared spectra of silicon nanowires
... 200030, People's Republic of China b State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China c Department of Physics, Zhejiang University, ... Sample-III was grown on a p-type (111) silicon wafer with a resistivity of ∼ 0.001 Ω cm at the position of higher temperature in the same system of Sample-II. The diameter of th...
Ngày tải lên: 16/03/2014, 15:11
Dimensional evolution of silicon nanowires synthesized by au–si island catalyzed chemical vapor deposition
... tips of the NWs seem to be Au–Si droplets in Fig. 1(d). The diameters of the NWs are similar to those of the Au–Si droplets. The existence of a critical Au film thickness for initiation of NW ... 2006 Abstract This study explores the nucleation and morphological evolution of silicon nanowires (Si-NWs) on Si (0 0 1) and (1 1 1) substrates synthesized using nanoscale Au–Si island...
Ngày tải lên: 16/03/2014, 15:15