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Journal of Nanomaterials
Volume 2014 (2014), Article ID 609262, 9 pages
Research Article

Influence of the Hydrothermal Method Growth Parameters on the Zinc Oxide Nanowires Deposited on Several Substrates

1Departamento de Física, ESFM-Instituto Politécnico Nacional, Edif. 9, UPALM, Col. San Pedro Zacatenco, 07738 México, DF, Mexico
2Departamento de Ingeniería Eléctrica, CINVESTAV, Avenue IPN 2508, Col. San Pedro Zacatenco, 07360 México, DF, Mexico
3Departamento de Física, CINVESTAV, Avenue IPN 2508, Col. San Pedro Zacatenco, 07360 México, DF, Mexico

Received 6 August 2014; Revised 21 October 2014; Accepted 4 November 2014; Published 18 November 2014

Academic Editor: Shadi A. Dayeh

Copyright © 2014 Concepción Mejía-García et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We report the synthesis of ZnO nanowires grown on several substrates (PET, glass, and Si) using a two-step process: (a) preparation of the seed layer on the substrate by spin coating, from solutions of zinc acetate dihydrate and 1-propanol, and (b) growth of the ZnO nanostructures by dipping the substrate in an equimolar solution of zinc nitrate hexahydrate and hexamethylenetetramine. Subsequently, films were thermally treated with a commercial microwave oven (350 and 700 W) for 5, 20, and 35 min. The ZnO nanowires obtained were characterized structurally, morphologically, and optically using XRD, SEM, and UV-VIS transmission, respectively. XRD patterns spectra revealed the presence of Zn(OH)2 on the films grown on glass and Si substrates. A preferential orientation along c-axis directions for films grown on PET substrate was observed. An analysis by SEM revealed that the growth of the ZnO nanowires on PET and glass is better than the growth on Si when the same growth parameters are used. On glass substrates, ZnO nanowires less than 50 nm in diameter and between 200 nm and 1200 nm in length were obtained. The ZnO nanowires band gap energy for the films grown on PET and glass was obtained from optical transmission spectra.