Abstract
Among materials well known to be used as Transparent Conducting Oxide (TCO) and in the field of solar cells, SnO2 is one of the best. In this work we investigate the doping effect with aluminum on some physical properties of SnO2. Al doped SnO2 thin films have been synthesized by sol–gel route using the dip coating method. The films were deposited on glass substrates with different Al concentrations (1%, 3%, 5% and 10%) and heated at 500 °C. The used precursor is SnCl3 dissolved in ethanol. The obtained thin layers were characterized by X-ray diffraction, UV-visible spectroscopy, by AFM microscopy and electrical measurements. The XRD spectra exhibit a tetragonal crystalline structure of SnO2 with a preferential direction along (101) for all samples, with grain sizes varying between 10.66 and 20.08 nm. On the other hand the UV-visible spectra show that: all samples of pure and Al doped SnO2 films have a good transmittance with values between 70–95% in visible region, and an optical gap varying between 3.28 to 3.64 eV. The electrical properties (resistivity, mobility and bulk concentration of charge carriers) obtained by means of Hall Effect indicate that the SnO2 n-type is inverted to p-type.
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References
Jin, Z.C., Hamberg, J., Granqvist, C.G.: Opticalproerties of sputter-deposition ZnO:Al thin films. J. Appl. Phys. 64, 5117 (1988)
Rusu, R.S., Russia, G.I.: On the electrical and optical characterization of CdO thin films. J. Optoelectron. Adv. Mater 7, 823 (2005)
Penza, M., Cozzi, S., Taglient, M.A., Mirenghi, L., Martucci, C., Quirini, A.: Characterization of transparent and conductive electrodes of indium tin oxide thin films by sequential reactive evaporation. Thin Solid Films 71, 349 (1999)
Ishibashi, S., Higuchi, Y., Ota, Y., Nakamura, K.: Low resistivity indium–tin oxide transparent. In: 6th Vacuum and Surface Sciences Conference of Asia and Australia (VASSCAA-6). IOP Publishing (1998)
Khan, A.F., Mehmood, M., Rana, A.M., Bhati, M.T., Mahmood, A.: Optical characterization of rf-magnetron sputtered nanostructured SnO2 thin films China. Phys. Lett. 7 (2009). 77803
Cavicchi, R., Semancik, S.: The growth of thin, epitaxial SnO2 films for gas sensing application. Thin Solid Films 206, 81
Jiang, J.C., Lian, K., Meletis, E.I.: Influence of oxygen plasma treatment on the microstructure of SnOx thin films. Thin Solid Films 411, 203 (2002)
Mehdi, M., Mohagheghi, B., Saremi, M.S.: The influence of Al doping on the electrical, optical and structural properties of SnO2 transparent conducting films deposited by the spray pyrolysis technique. J. Phys. D Appl. Phys. 37, 1248–1253 (2004)
Ni, J., Zhao, X., Zheng, X., Zhao, J., Liu, B.: Electrical, structural, photoluminescence and optical properties of p-type conducting, antimony-doped SnO2 thin films. J. Acta Mater. 57, 278–285 (2009)
Ji, Z.G., He, Z.J., Song, Y.L., Liu, K., Ye, Z.Z.: Fabrication and characterization of indium-doped p-type SnO2 thin films. J. Cryst. Growth 259, 282–285 (2003)
Huang, Y.X., Ji, Z.G., Chen, C.: Preparation and characterization of p-type transparent conducting tin-gallium oxide films. Appl. Surf. Sci. 253, 4819–4822 (2007)
Mehdi, M., Mohagheghi, B., Saremi, M.S.: Electrical, optical and structural properties of Li-doped SnO2 transparent conducting films deposited by the spray pyrolysis technique: a carrier-type conversion study. Semicond. Sci. Technol. 19, 764–769 (2004)
Wurst, J.C., Nelson, J.A.: Lineal intercept technique for measuring grain size in two-phase polycrystalline ceramics. J. Amer. Cer. Soc. 55, 109–111 (1972)
Tauc, J., Grigorovici, R., Vancu, A.: Optical properties and electronic structure of amorphous germanium. Phys. Status Solidi (b) 15, 627–637 (1966)
Bagheri Mohagheghi, M.M., Shokooh Saremi, M.: J. Phys. D: Appl. Phys. 37, 1248–1253 (2004)
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Boumezoued, A., Guergouri, K., Azizi, C., Aberkane, A., Khial, A. (2018). Investigation of Structural, Optical and Electrical Properties of Al Doped SnO2 Thin Films Synthesized by Sol-Gel. In: Abdelbaki, B., Safi, B., Saidi, M. (eds) Proceedings of the Third International Symposium on Materials and Sustainable Development. SMSD 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-89707-3_1
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DOI: https://doi.org/10.1007/978-3-319-89707-3_1
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