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- W2076126876 abstract "Two photoluminescent defects associated with Er+3-doped Si are (i) a high-temperature defect (which appears after annealing at ∼900 °C and produces five photoluminescence lines), and (ii) a low-temperature defect (which is created at lower annealing temperatures in addition to the high-temperature defect and yields four photoluminescence lines). We conclude that both defects are at Er sites of tetrahedral symmetry, one substitutional and the other interstitial, and that the crystal-field split ground-state levels of Er+3 at either site are of the symmetries (in order of increasing energy) Γ6, Γ8, Γ8, Γ7, and Γ8. We predict that the highest Γ8 level of the low-temperature defect has not yet been resolved, which is why that defect exhibits only four levels. The symmetries of the excited (initial) state levels, in order of increasing energy, are predicted to be Γ8, Γ6, Γ6, Γ8, and Γ7. We speculate that the high-temperature defect’s Er is at an interstitial site, while the low-temperature defect’s Er is substitutional." @default.
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- W2076126876 date "1997-02-15" @default.
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- W2076126876 title "Crystal-field splitting of Er+3 in Si" @default.
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- W2076126876 doi "https://doi.org/10.1063/1.364043" @default.
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