Energy band bowing parameter in MgZnO alloys

Xu Wang, Katsuhiko Saito, Tooru Tanaka, Mitsuhiro Nishio, Takashi Nagaoka, Makoto Arita, Qixin Guo

    研究成果: Contribution to journalArticle査読

    36 被引用数 (Scopus)

    抄録

    We report on bandgap bowing parameters for wurtzite and cubic MgZnO alloys from a study of high quality and single phase films in all Mg content range. The Mg contents in the MgZnO films were accurately determined using the energy dispersive spectrometer and X-ray photoelectron spectroscopy (XPS). The measurement of bandgap energies by examining the onset of inelastic energy loss in core-level atomic spectra from XPS is proved to be valid for determining the bandgap of MgZnO films. The dependence of the energy bandgap on Mg content is found to deviate downwards from linearity. Fitting of the bandgap data resulted in two bowing parameters of 2.01 ± 0.04 eV and 1.48 ± 0.11 eV corresponding to wurtzite and cubic MgZnO films, respectively.

    本文言語英語
    論文番号022111
    ジャーナルApplied Physics Letters
    107
    2
    DOI
    出版ステータス出版済み - 7 13 2015

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(その他)

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