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Enhancement in the electrical and antibacterial properties of sprayed ZnO films by simultaneous doping of Mg and F

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Abstract

Undoped and Doubly (Magnesium + Fluorine) doped zinc oxide (ZnO:Mg:F) thin films with different Mg doping levels (4, 8, 12 and 16 at.%) and constant F doping level (20 at.%) were fabricated by employing a simplified spray pyrolysis technique. The antibacterial and certain physical properties of the films were studied as a function of Mg doping level. All the films exhibited hexagonal wurtzite structure with preferential orientation along the (002) plane. A lesser electrical resistivity was achieved in the present study than earlier reports of ZnO:Mg films thanks to the simultaneous doping of F with Mg in ZnO films. From the optical studies, it was observed that, all the films showed good transparency (≈85 %) with significant enhancement in the optical band gap with Mg doping level. The obtained PL spectra were well corroborated with the structural and optical studies. Further, it was also found that the antibacterial activity of doubly doped ZnO films was enhanced remarkably by the increasing incorporation of Mg concentration.

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Acknowledgments

Financial support from the University Grants Commission of India through the Major Research Project (F. No. 40-28/2011(SR)) is gratefully acknowledged.

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Authors and Affiliations

  1. Research Department of Physics, AVVM Sri Pushpam College (Autonomous), Poondi, Thanjavur, 613 503, Tamil Nadu, India

    S. Snega, K. Ravichandran, N. Jabena Begum & K. Thirumurugan

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  1. S. Snega
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  2. K. Ravichandran
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  3. N. Jabena Begum
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  4. K. Thirumurugan
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Correspondence to K. Ravichandran.

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Snega, S., Ravichandran, K., Jabena Begum, N. et al. Enhancement in the electrical and antibacterial properties of sprayed ZnO films by simultaneous doping of Mg and F. J Mater Sci: Mater Electron 24, 135–141 (2013). https://doi.org/10.1007/s10854-012-0956-6

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  • DOI: https://doi.org/10.1007/s10854-012-0956-6

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