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DEPOSITION AND CHARACTERIZATION OF MAGNETRON CO-SPUTTERED InAlN FILM AT DIFFERENT Ar:N2 GAS FLOW RATIOS

Author

Listed:
  • NAVEED AFZAL

    (School of Physics, Universiti Sains Malaysia (USM), 11800 USM Pulau Pinang, Malaysia)

  • MUTHARASU DEVARAJAN

    (School of Physics, Universiti Sains Malaysia (USM), 11800 USM Pulau Pinang, Malaysia)

  • KAMARULAZIZI IBRAHIM

    (#x2020;Institute of Nano Optoelectronics Research and Technology, Universiti Sains Malaysia (USM), 11800 USM Pulau Pinang, Malaysia)

Abstract

This work presents the influence of changing Ar:N2 gas ratio on the growth and properties of InAlN films. InAlN films were deposited on p-type Si(111) substrates by using magnetron co-sputtering method in 6:12, 10:10, 12:8 and 12:6 Ar:N2 mixtures at 300∘C. The surface, structural, electrical and optical properties of the deposited films were evaluated at different Ar:N2 ratios. The grain size and film thickness were increased by increasing the Ar flow with respect to N2. Structural characterization by X-ray diffraction (XRD) revealed an improvement in the crystalline quality of the c-axis-oriented InAlN film by adjusting the Ar:N2 ratio to 12:8, however no diffraction peak corresponding to InAlN was detected at 6:12 Ar:N2 mixture. The surface roughness of InAlN film exhibited an increasing trend whereas the electrical resistivity of the film was decreased by increasing the Ar:N2 ratio. The bandgap of InAlN film was calculated from the optical reflectance spectra and it was found to change by changing the Ar:N2 gas ratio. The analysis of results from this work shows that the InAlN film with improved physical properties can be obtained through reactive magnetron co-sputtering method by adjusting the Ar:N2mixture to 12:8.

Suggested Citation

  • Naveed Afzal & Mutharasu Devarajan & Kamarulazizi Ibrahim, 2017. "DEPOSITION AND CHARACTERIZATION OF MAGNETRON CO-SPUTTERED InAlN FILM AT DIFFERENT Ar:N2 GAS FLOW RATIOS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(03), pages 1-9, April.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:03:n:s0218625x17500275
    DOI: 10.1142/S0218625X17500275
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