Structural and optical properties of Ga auto-incorporated InAlN epilayers

Taylor, E. and Smith, M.D. and Sadler, T.C. and Lorenz, K. and Li, H.N. and Alves, E. and Parbrook, P.J. and Martin, R.W. (2014) Structural and optical properties of Ga auto-incorporated InAlN epilayers. Journal of Crystal Growth, 408. pp. 97-101. ISSN 0022-0248

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    Abstract

    InAlN epilayers deposited on thick GaN buffer layers grown by metalorganic chemical vapour deposition (MOCVD) revealed an auto-incorporation of Ga when analysed by wavelength dispersive x-ray (WDX) spectroscopy and Rutherford backscattering spectrometry (RBS). Samples were grown under similar conditions with the change in reactor flow rate resulting in varying Ga contents of 12-24%. The increase in flow rate from 8000 to 24 000 sccm suppressed the Ga auto-incorporation which suggests that the likely cause is from residual Ga left behind from previous growth runs. The luminescence properties of the resultant InAlGaN layers were investigated using cathodoluminescence (CL) measurements.

    Author(s):Taylor, E. ORCID logoORCID: https://orcid.org/0000-0002-8262-5762, Smith, M.D., Sadler, T.C., Lorenz, K., Li, H.N., Alves, E., Parbrook, P.J. and Martin, R.W. ORCID logoORCID: https://orcid.org/0000-0002-6119-764X
    Item type:Article
    ID code:49667
    Keywords:metalorganic chemical vapour deposition, wavelength dispersive x-ray, Rutherford backscattering spectrometry, InAlN, InAlGaN, Ga incorporation, MOCVD, Physics, Chemical engineering, Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics
    Subjects:Science > Physics
    Technology > Chemical engineering
    Department:Faculty of Science > Physics
    Technology and Innovation Centre > Bionanotechnology
    Technology and Innovation Centre > Photonics
    Depositing user: Pure Administrator
    Date deposited:07 Oct 2014 14:17
    Last modified:05 Dec 2019 04:21
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/49667
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