Enhanced Pr3+ photoluminescence by energy transfer in SrF2 : Eu2+, Pr3+ phosphor

Efficient energy transfer was demonstrated in the SrF2 : Eu2+, Pr3+ phosphor synthesized by the co-precipitation method. Results obtained with X-ray diffraction (XRD), scanning electron microscopy (SEM), x-ray spectroscopy (XPS), photoluminescence (PL) and decay curves proposed the UV-Vis energy tra...

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Bibliographic Details
Published in:AIP advances 2016-02, Vol.6 (2), p.025204-025204-12
Main Authors: Yagoub, M. Y. A., Swart, H. C., Bergman, P., Coetsee, E.
Format: Article
Language:English
Subjects:
Cross relaxation
Energy transfer
Europium
Photoluminescence
Photons
Quenching
Scanning electron microscopy
Strontium fluorides
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:Efficient energy transfer was demonstrated in the SrF2 : Eu2+, Pr3+ phosphor synthesized by the co-precipitation method. Results obtained with X-ray diffraction (XRD), scanning electron microscopy (SEM), x-ray spectroscopy (XPS), photoluminescence (PL) and decay curves proposed the UV-Vis energy transfer process. The energy transfer process between the Eu2+ and Pr3+ ions in SrF2 was investigated to evaluate the potential of the Eu2+ ion as a sensitizer for the Pr3+ ion. The results proposed that Eu2+ could be a good sensitizer for absorbing the UV photons and efficiently enhancing the Pr3+ emission intensity. The energy transfer process was effective until concentration quenching for the Pr3+ ions occurred. The concentration quenching was attributed to cross-relaxation between the Pr3+ ions.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4941833