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Growth of GeO2 Nanowires by Thermal Annealing

Published online by Cambridge University Press:  01 February 2011

Chun-I Wu  and
T. P. Hogan
Chun-I Wu
Affiliation:
[email protected], Michigan State University, Electrical and Computer Engineering, 2120 Engineering Building, East Lansing, MI, 48824, United States
T. P. Hogan
Affiliation:
[email protected], Michigan State University, Department of Electrical and Computer Engineering, 2120 Engineering Building, East Lansing, MI, 48824, United States
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Abstract

Germanium dioxide nanowires have gained considerable interest lately [1, 2], in part this is due to the bandgap of 2.44 eV, and high index of refraction, n = 1.63 [3]. In this paper we report a simple fabrication technique for making large quantities of GeO2 wires with diameters ranging from 40 nm to >500 nm on different substrates. The nanowires show strong preferential growth at gold catalyst locations on the silicon substrate. The nanowires were grown on silicon, tungsten, quartz, and nickel substrates at locations where a ∼10 nm film of Au was deposited. Growth and diameter of the wires are strongly dependent on the background gas (room air) and the length of time exposed to air at the growth temperature. Presented here are the growth conditions, and images of the resulting wires fabricated. The products are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) as well as X-Ray diffraction (XRD). The observations show the products are crystalline GeO2 nanowires.

Keywords

nanostructureGeAg
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 940: Symposium P – Semiconductor Nanowires – Fabrication, Physical Properties, and Applications , 2006 , 0940-P13-04
Copyright
Copyright © Materials Research Society 2006

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References

1 Hidalgo, P., M'endez, B. and Piqueras, J., “GeO2 nanowires and nanoneedles grown by thermal deposition without a catalyst,” Nanotechnology, 16, pp. 2521־2524, 2005.Google Scholar
2 Tang, Y. H., Zhang, Y. F., Wang, N., Bello, I., Lee, C. S., and Lee, S. T., “Germanium dioxide whiskers synthesized by laser ablation,” Applied Physics Letters, 74 (25), pp. 3824–3826, 1999.Google Scholar
3 Yin, Zhong-Yi and Garside, B. K., “Low-loss GeO2 optical waveguide fabrication using low deposition rate rf sputtering,” Applied Optics, 21 (23), pp. 4324–4328, 1982.Google Scholar
4 Bai, Z.G., Yu, D.P., Zhang, H.Z., Ding, Y., Wang, Y.P., Gai, X.Z., Hang, Q.L., Xiong, G.C., and Feng, S.Q., “Nano-scale GeO2wires synthesized by physical evaporation”, Chemical Physics Letters, vol. 317, pp504–509, Feb. 2000.Google Scholar
5 Hidalgo, P., Mendez, B. and Piqueras, J., “GeO2 nanowires and nanoneedles grown by thermal deposition without a catalyst”, Nanotechnology, vol. 16, pp2521–2524, Sep. 2005.Google Scholar
6 Zhang, Y., Zhu, J., Zhang, Q., Yan, Y., Wang, N., and Zhang, X., “Synthesis of GeO2 nanorods by carbon nanotubes template”, Chemical Physics Letters, vol. 317, pp. 504–509, Feb. 2000.Google Scholar
7 Tang, Y. H., Zhang, Y. F., Wang, N., Bello, I., Lee, C. S., and Lee, S. T., “Germanium dioxide whiskers synthesized by laser ablation”, Applied Physics Letters, vol. 74 (25), pp. 3824–3826, Feb. 1999.Google Scholar
8 Dang, H. Y., Wang, J., and Fan, S. S., “The synthesis of metal oxide nanowires by directly heating metal samples in appropriate oxygen atmospheres”, Nanotechnology, vol. 14, pp738–741, May 2003.Google Scholar
9 Hu, J.-Q., Li, Q., Meng, X.-M., Lee, C.-S., and Lee, S.-T., “Synthesis and nanostructuring of patterned wires of GeO2 by thermal oxidation”, Advanced Materials, vol. 14, no. 19, pp1396–1399, Oct. 2002.Google Scholar
10 Wu, X. C., Song, W. H., Zhao, B., Sun, Y. P., and Du, J. J., “Preparation and photoluminescence properties of crystalline GeO2 nanowires”, Chemical Physics Letters, vol. 349, pp210–214, Oct. 2001.Google Scholar