Environment of Er Doped in a-Si:H and Its Relation with Photoluminescence Spectra

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<jats:title>Abstract</jats:title><jats:p>The crystal-field potential at the Er<jats:sup>3+</jats:sup> ion surrounded by six oxygen ions is expanded in terms of polynomials. After converting it into equivalent angular momentum operators, the Stark-splitting of the <jats:sup>4</jats:sup>I<jats:sub>15/2</jats:sub> ground state of the Er<jats:sup>3+</jats:sup> ion is calculated. Influence of the change in the environment of the Er<jats:sup>3+</jats:sup> ion on the shift of the energy levels is investigated and compared with the observed Er photoluminescence spectrum in a-Si:H. The scattering of the calculated energy levels by the structural fluctuation around the Er<jats:sub>3+</jats:sub> ion is also compared with the linewidth of the component photoluminescence lines.</jats:p>

Journal

  • MRS Proceedings

    MRS Proceedings 910 2006-01-01

    Springer Science and Business Media LLC

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