The unusual temperature dependence of the Eu2+ fluorescence lifetime in CaF2 crystals

The unusual temperature dependence of the Eu2+ fluorescence lifetime in CaF2 crystals

Fluorescence lifetimes of Eu2+ doped in CaF2 are measured at various temperatures between 4 and 450 K. The lifetime increases between 100 and 320K, in contrast to the usual lifetime-temperature dependence. At higher or lower temperatures, the lifetime decreases with increasing temperature. This phen...

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Veröffentlicht in:Journal of alloys and compounds 2006-02, Vol.408-412, p.784-787
Hauptverfasser: Duan, C K, Meijerink, A, Reeves, R J, Reid, M F
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container_title Journal of alloys and compounds
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creator Duan, C K
Meijerink, A
Reeves, R J
Reid, M F
description Fluorescence lifetimes of Eu2+ doped in CaF2 are measured at various temperatures between 4 and 450 K. The lifetime increases between 100 and 320K, in contrast to the usual lifetime-temperature dependence. At higher or lower temperatures, the lifetime decreases with increasing temperature. This phenomenon is explained by simulation of the energy levels and lifetimes of low-lying 4f65d states involved in the fluorescence.
doi_str_mv 10.1016/j.jallcom.2005.01.077
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title The unusual temperature dependence of the Eu2+ fluorescence lifetime in CaF2 crystals
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