F3+ and F2 centers in LiF display efficient broad emissions in the green-red spectral region when excited in their absorption bands located around 450 nm. Recently it has been shown that color centers, impurities and low-dimensionality structures in heavily colored samples influence the optical cycles and in particular the lifetimes of the emitting states. In order to determine these effects we measured the decay times, which are reported in the literature with values scattered by more than a factor 4. We obtained the radiative lifetime τ0 = (8.1 ± 1.2) ns for F3+ and τ0 = (15.5 ± 0.8) ns for F2 centers and we did not observe any temperature dependence in the range 15-300 K.

Baldacchini, G., DE MATTEIS, F., Francini, R., Grassano, U.m., Menchini, F., & Montereali, R. (2000). Emission decay times of F3+ and F2 color centers in LiF crystals. JOURNAL OF LUMINESCENCE, 87, 580-582 [10.1016/S0022-2313(99)00301-4].

Emission decay times of F3+ and F2 color centers in LiF crystals

DE MATTEIS, FABIO;FRANCINI, ROBERTO;GRASSANO, UMBERTO MARIA;
2000

Abstract

F3+ and F2 centers in LiF display efficient broad emissions in the green-red spectral region when excited in their absorption bands located around 450 nm. Recently it has been shown that color centers, impurities and low-dimensionality structures in heavily colored samples influence the optical cycles and in particular the lifetimes of the emitting states. In order to determine these effects we measured the decay times, which are reported in the literature with values scattered by more than a factor 4. We obtained the radiative lifetime τ0 = (8.1 ± 1.2) ns for F3+ and τ0 = (15.5 ± 0.8) ns for F2 centers and we did not observe any temperature dependence in the range 15-300 K.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - Fisica della Materia
Settore FIS/01 - Fisica Sperimentale
English
Physical and Theoretical Chemistry; Atomic and Molecular Physics, and Optics
Baldacchini, G., DE MATTEIS, F., Francini, R., Grassano, U.m., Menchini, F., & Montereali, R. (2000). Emission decay times of F3+ and F2 color centers in LiF crystals. JOURNAL OF LUMINESCENCE, 87, 580-582 [10.1016/S0022-2313(99)00301-4].
Baldacchini, G; DE MATTEIS, F; Francini, R; Grassano, Um; Menchini, F; Montereali, R
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/130124
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