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Enhanced Pr3+ photoluminescence by energy transfer in SrF2:Eu2+, Pr3+ phosphor
University of Orange Free State, South Africa.
University of Orange Free State, South Africa.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
University of Orange Free State, South Africa.
2016 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 6, no 2, 025204- p.Article in journal (Refereed) Published
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Abstract [en]

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. (C) 2016 Author(s).

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2016. Vol. 6, no 2, 025204- p.
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Chemical Sciences
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URN: urn:nbn:se:liu:diva-126843DOI: 10.1063/1.4941833ISI: 000371739000055OAI: oai:DiVA.org:liu-126843DiVA: diva2:917189
Note

Funding Agencies|South African Research Chairs Initiative of the Department of Science and Technology; National Research Foundation of South Africa; National Research Foundation (NRF); Cluster program of the University of the Free State

Available from: 2016-04-05 Created: 2016-04-05 Last updated: 2017-11-30

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Bergman, Peder

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