WJNSE  Vol.4 No.1 , March 2014
Role of Chromium Intermediate Thin-Film on the Growth of Silicon Oxide (SiOx) Nanowires
ABSTRACT
In the present work, one-dimensional nanostructures of silicon oxide (SiOx) have been synthesized by thermal annealing method with and without chromium thin film on silicon substrate. The synthesis was carried out at different process temperatures ranging from 1000°C to 1100°C by using gold/chromium (Au/Cr) catalysts stack layer on the Si substrate in nitrogen (N2) ambience. The as-synthesized SiOx nanostructures have tetragonal rutile structure and show polycrystalline nature. The SEM images reveal wire-like nanostructures on the substrate with and without chromium thin film. Under the catalytic reaction of the gold/chromium metal, the density of SiOx nanowires is enhanced, since the Cr layer serves as a diffusion barrier for the diffusion of the gold downwards into the Si substrate. The vapor-liquid solid (VLS) growth mechanism is found to be dominant in the growth of SiOx nanowires. Furthermore, X-Ray diffraction microscopy (XRD) and Photoluminescence spectroscopy (PL) analysis conclude the defect free growth of the SiOx nanowires on gold/chrome/silicon substrate.

Cite this paper
Johari, A. , Johari, A. , Rana, V. and Bhatnagar, M. (2014) Role of Chromium Intermediate Thin-Film on the Growth of Silicon Oxide (SiOx) Nanowires. World Journal of Nano Science and Engineering, 4, 1-6. doi: 10.4236/wjnse.2014.41001.
References
[1]   Tong, L., Lou, J. and Gattas, R.R. (2005) Assembly of Silicon Nanowires on Silica Aerogels for Microphotonic Devices. Nano Letters, 5, 259-262.
http://dx.doi.org/10.1021/nl0481977

[2]   Yan, X.Q., Zhou, W.Y. and Sun, L.F. (2005) The Influence of Hydrogen on the Growth of Gallium Catalyzed Silicon Oxide Nanowires. Journal of Physics and Chemistry of Solids, 66, 701-705.
http://dx.doi.org/10.1016/j.jpcs.2004.06.021

[3]   Liu, W.-L., Hseih, S.-H., Chen, C.H. and Chen, W.-J. (2009) Effect of Fe Metal on the Growth of Silicon Oxide Nanowires. International Journal of Minerals, Metallurgy and Materials, 16, 317-321.
http://dx.doi.org/10.1016/S1674-4799(09)60057-1

[4]   Jiang, Z., Xie, T. and Yuan, B.Y. (2005) Synthesis of Core-Shell Nanowires of FeCoNi Alloy Core with Silicon Oxide Layers. Applied Physics A, 81, 477-479.
http://dx.doi.org/10.1007/s00339-005-3279-0

[5]   Zhang, J., Xu, B. and Yang, Y. (2006) Catalyzed Assisted Growth of Well-Aligned Silicon Oxide Nanowires. Journal of Non-Crystalline Solids, 352, 2859-2862.
http://dx.doi.org/10.1016/j.jnoncrysol.2006.02.088

[6]   Wang, C.Y., Chan, L.H. and Xiao, D.Q. (2006) Mechanism of Solid-Liquid-Solid on the Silicon Oxide Nanowire Growth. Journal of Vacuum Science & Technology B, 24, 613.
http://dx.doi.org/10.1116/1.2172953

[7]   Lin, L.W., Tang, Y.H. and Li, X.X. (2007) Water-Assisted Synthesis of Silicon Oxide Nanowires Under Supercritically Hydrothermal Conditions. Journal of Applied Physics, 101, Article ID: 014314.
http://dx.doi.org/10.1063/1.2404092

[8]   Wang, X.J., Dong, B. and Zhou, Z. (2009) Preparation and Photoluminescence of High Density SiOx Nanowires with Fe3O4 Nanoparticles Catalyst. Materials Letters, 63, 1149-1152.
http://dx.doi.org/10.1016/j.matlet.2009.01.084

[9]   Chen, X.Y., Lu, Y.F., Tang, L.J., Wu, Y.H., Cho, B.J., Xu, X.J., Dong, J.R. and Song, W.D. (2005) Annealing and Oxidation of Silicon Oxide Films Prepared by Plasma-Enhanced Chemical Vapor Deposition. Journal of Applied Physics, 97, Article ID: 014913.
http://dx.doi.org/10.1063/1.1829789

[10]   Park, H.K., Yang, B.L., Kim, S.W., et al. (2007) Formation of Silicon Oxide Nanowires Directly From Au/Si and Pd-Au/Si Substrates. Physica E, 37, 158-162.
http://dx.doi.org/10.1016/j.physe.2006.08.003

 
 
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