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Synthesis of Aluminum-doped Zinc Oxide Nanowires Hydrothermally Grown on Plastic Substrate

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DOI: 10.4236/ampc.2012.24B016    4,761 Downloads   8,005 Views   Citations


We report the synthesis of undoped ZnO and Al-doped ZnO (ZnO:Al) nanowires grown using a two-step process: (a) preparation of the seed layer, and (b) growth of the nanostructures. In the first step,  10 mM solutions of zinc acetate dihydrate and 1-propanol were spin coated on polyethylene terephthalate  (PET) substrate at 2000 rpm by 30 s. Vertical nanowires were then grown by dipping the substrates in an equimolar solution of zinc nitrate hexahydrate and hexamethylenetetramine. As doping source, aluminum nitrate nonahydrate powders were added in the solution. In the solutions, Al doping concentrations were established as 0.5 At %, 1.0 At %, 2.0 At % and 3.0 At %, respectively. The hydrothermal process were carried out with a commercially microwave at 140 W power setting. The nanowires were characterized optically and morphologically. XRD patterns show the presence of ZnO, Zn(OH)2 and Zn6Al2O9. Scanning electron microscopy analysis showed that the size of ZnO nanowires was 50 nm in diameter. The undoped ZnO and ZnO:Al nanowires bandgap energy was obtained from optical transmission spectra.

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The authors declare no conflicts of interest.

Cite this paper

C. Mejía García, E. Díaz Valdés, A. Mercado, A. Méndez Sánchez, J. Andraca Adame, V. Subramaniam and J. Ibarra, "Synthesis of Aluminum-doped Zinc Oxide Nanowires Hydrothermally Grown on Plastic Substrate," Advances in Materials Physics and Chemistry, Vol. 2 No. 4B, 2012, pp. 56-59. doi: 10.4236/ampc.2012.24B016.


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