Single phase Ca3Sc2Si3O12 co-doped with Pr3+ and Mg2+ was synthesized by high temperature solid state reaction. The optical spectroscopy of this composition was investigated using time-resolved VUV spectroscopy upon excitation with synchrotron radiation. It was demonstrated that the addition of Mg2+ leads to a significant modification of the luminescence properties in terms of emission intensity, dynamics and reduction of defect concentration in comparison to Mg-free Ca3Sc2Si3O12:Pr3+. The peculiarities of the host-to-impurity energy transfer are analysed and discussed.

VUV Spectroscopy of Ca3Sc2Si3O12:Pr3+: Scintillator Optimization by Co-Doping with Mg2+ Luminescence and Display Materials, Devices, and Processing

PICCINELLI, FABIO;SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni
2012

Abstract

Single phase Ca3Sc2Si3O12 co-doped with Pr3+ and Mg2+ was synthesized by high temperature solid state reaction. The optical spectroscopy of this composition was investigated using time-resolved VUV spectroscopy upon excitation with synchrotron radiation. It was demonstrated that the addition of Mg2+ leads to a significant modification of the luminescence properties in terms of emission intensity, dynamics and reduction of defect concentration in comparison to Mg-free Ca3Sc2Si3O12:Pr3+. The peculiarities of the host-to-impurity energy transfer are analysed and discussed.
Calcium scandium silicates; Pr3+; VUV spectroscopy; defects; synchrotron radiation; energy transfer
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11562/473985
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