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Article Dans Une Revue Journal of Luminescence Année : 2017

Luminescence quenching in KYb(WO 4 ) 2 -Tb 3+ : An example of temperature-pressure equivalence

Résumé

The luminescence properties of a single crystal of KYb(WO4)2 doped with Tb3+ are investigated as a function of temperature at ambient pressure and at room temperature under high hydrostatic pressure. The observed quenching of the green Tb3+ (5D4→7F5) luminescence is ascribed to a pressure-induced downshift of the Tb3+→W6+ metal to metal charge transfer (impurity trapped exciton) state. A model is introduced to account for the pressure-induced quenching of the Tb3+ luminescence at room temperature in this double tungstate crystal.

Domaines

Chimie
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Dates et versions

hal-01639482 , version 1 (20-11-2017)

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Sebastian Mahlik, Francesc Diaz, Philippe Boutinaud. Luminescence quenching in KYb(WO 4 ) 2 -Tb 3+ : An example of temperature-pressure equivalence. Journal of Luminescence, 2017, 191, pp.18 - 21. ⟨10.1016/j.jlumin.2017.02.007⟩. ⟨hal-01639482⟩
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