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


The crystal-field potential at the Er3+ 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 4I15/2 ground state of the Er3+ ion is calculated. Influence of the change in the environment of the Er3+ 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 Er3+ ion is also compared with the linewidth of the component photoluminescence lines.

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Kumeda, M., Sekizawa, Y., Morimoto, A. et al. Environment of Er Doped in a-Si:H and Its Relation with Photoluminescence Spectra. MRS Online Proceedings Library 910, 602 (2005). https://doi.org/10.1557/PROC-0910-A06-02

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