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Mohammadi, M.
- Investigations on Impact of Post-heat Temperature on Structural, Optical and Electrical Properties of Al-doped ZnO Thin Films Prepared by Sol-gel Method
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Authors
Affiliations
1 Dept. of Physics, Ferdowsi University of Mashhad, Mashhad, IR
1 Dept. of Physics, Ferdowsi University of Mashhad, Mashhad, IR
Source
Indian Journal of Science and Technology, Vol 3, No 2 (2010), Pagination: 110-112Abstract
Aluminum doped ZnO (AZO) thin films have been prepared by spin coating route on glass substrate. The structural, optical and electrical thin films have been characterized in different post-heat temperatures between 45° and 600°C. Xray diffraction analysis has revealed hexagonal wurtzite structure with (002) preferred orientation which increased in crystallite size by increasing post-heat temperature. The optical spectra of the films showed the transmittance higher than 90% within the visible wavelength region. Our results show that optical gap and surface resistance of the films are decreased by increasing post-heat temperature.Keywords
Sol-gel Method, Optical Spectra, Post-heat Temperature, Spin CoatingFull Text
References
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- Aspergillus niger Biosensor Based on Tin Oxide (SnO2) Nanostructures: Nanopowder and Thin Film
Abstract Views :759 |
PDF Views:120
Authors
Affiliations
1 Nano Research Center, Faculty of Science, Ferdowsi University of Mashhad, IR
2 Angstrom Thin Film Research Laboratory, Ferdowsi University of Mashhad, IR
3 Fungi lab, Faculty of Science, Ferdowsi University of Mashhad, IR
4 Physics Department, Faculty of Science, University of Birjand, Birjand, IR
1 Nano Research Center, Faculty of Science, Ferdowsi University of Mashhad, IR
2 Angstrom Thin Film Research Laboratory, Ferdowsi University of Mashhad, IR
3 Fungi lab, Faculty of Science, Ferdowsi University of Mashhad, IR
4 Physics Department, Faculty of Science, University of Birjand, Birjand, IR
Source
Indian Journal of Science and Technology, Vol 5, No 7 (2012), Pagination: 3010-3012Abstract
In this paper, SnO2 thin film and nanopowder were prepared by spray pyrolysis and sol-gel methods, respectively. The SnO2 nanostructures were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Then Aspergillus niger fungus were cultured in an appropriate medium and were exposed to the SnO2 nanofilm and nanopowder. The nano-system electric resistance was measured in the presence of produced gases and the effect of time and temperature on nanobiosensors was studied. Then, SnO2 nanobiosensor was characterized in the presence of silicagel and calcium carbonate.Keywords
Aspergillus niger Fungi, Spray Pyrolysis Technique, Sol Gel MethodFull Text
References
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