Silicon carbide nanowires synthesized with phenolic resin and silicon powders

... Silicon carbide nanowires synthesized with phenolic resin and silicon powders Hongsheng Zhao à , Limin Shi, Ziqiang Li, Chunhe Tang Division of New Materials, Institute of Nuclear and New ... are key factors for the formation of b -SiC nanowires. This paper proposed a method to synthesize SiC nanowires with phenolic resin and silicon powders without using...

Ngày tải lên: 16/03/2014, 15:20

... heat-activated carbon with SiO powders using anodic aluminum oxide (AAO) template without any metal catalyst. SiO powders cannot react with activated carbon directly because of AAO template. The synthesized SiC nanowires ... pure and expensive carbon nanotube or the hazardous and easily explosive silicon (carbon) precursor of SiH 4 or SiCl 4 (CH 4 ). In addition, the synthe...

Ngày tải lên: 16/03/2014, 15:21

... syn- thesize Si nanowires. It has been reported that Au catalyst particles can limit the diameter of the Si nanowires and usually induct the aligned Si nanowires arrays on the silicon substrate [10–13]. ... mag- nification TEM image of the Si nanowires. Some silicon particles are mixed with the Si nanowires. A straight nanowire 30 nm wide, a typical diameter for the thin Si na...

Ngày tải lên: 16/03/2014, 15:12

... 81.07.Àb Keywords: Silicon oxide; Nanowire; CVD; Silicon substrate 1. Introduction Studies on the fabrication and characterization of one- dimensional (1D) nanostructures such as nanowires and nanotubes ... a large number of nanowires with lengths of tens of micrometers and diameters around 100 nm were formed on the Pd–Au/Si substrate surface, while a small number of nanowire...

Ngày tải lên: 16/03/2014, 15:16

... pro- cess, hydrocarbon and hydrogen ions react with silicon oxide to form carbon oxide and silicon car- bide. The carbon oxide gas was pumped out while silicon carbide remained on the silicon nanowire. Fig. ... Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, People's Republic of China Received 23 June 2000 Abstract A reaction of sili...

Ngày tải lên: 16/03/2014, 15:05

... Morphology and growth mechanism study of self-assembled silicon nanowires synthesized by thermal evaporation Z. Zhang 1 , X.H. Fan, L. Xu, C.S. Lee, S.T. Lee * Center of Super-Diamond and Advanced ... indirect band gap of $1.1 eV and a small exciton binding energy ($15 eV). In contrast, silicon nanowires (SiNWs) of a few na- nometers in diameter have shown unusual photo- lumin...

Ngày tải lên: 16/03/2014, 15:06

... University of Science and Technology of China, Hefei 230026, China Received 15 March 2002 Abstract The silicon nanowires (SiNWs) with different diameters and morphologies were synthesized by laser ... between 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 silicon, outer layer...

Ngày tải lên: 16/03/2014, 15:09

... 2002 Abstract Ultrafine and uniform silicon nanowires (SiNWs), with a Si crystalline core of 1–5 nm (average 3 nm) in diameter and a SiO 2 outer layer of 10–20 nm thick, were synthesized by the oxide-assisted ... Ultrafine and uniform silicon nanowires grown with zeolites C.P. Li a , X.H. Sun a,b , N.B. Wong a,b , C.S. Lee a , S.T. Lee a, * , Boon K. Teo c,1 a Department of...

Ngày tải lên: 16/03/2014, 15:09

... 16–20 www.elsevier.nlrlocatercplett Si nanowires synthesized by laser ablation of mixed SiC and SiO powders 2 Y.H. Tang, Y.F. Zhang, H.Y. Peng, N. Wang, C.S. Lee, S.T. Lee ) () Center of Super-Diamond and AdÕanced Films COSDAF and ... consist of straight and smoothly curved parts. The morphology is a common characteristic of wx various nanowires, such as SiC nanowires 15 and...

Ngày tải lên: 16/03/2014, 15:08

... strong carbon-related bands in Raman spectrum. The enhancement of blue emission band and a new yellow band were observed from SiC–SiO 2 core–shell nanowires decorated with carbon nanoparti- cles and considered ... of the SiC–SiO 2 nanowires decorated with carbon nanoparticles. In XRD pattern, five peaks indexed with (1 1 1), (2 0 0), (2 2 0), (3 1 1), and (2 2 2) are consistent...

Ngày tải lên: 16/03/2014, 15:08