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Open AccessArticle

Surface Characterization and Photoluminescence Properties of Ce3+,Eu Co-Doped SrF2 Nanophosphor

Department of Physics, University of the Free State, PO Box 339, Bloemfontein, ZA 9300, South Africa
Department of Physics, Sudan University of Science and Technology, Khartoum 11113, Sudan
Department of Physics, Chemistry and Biology, Linköping University, Linköping S-581 83, Sweden
Authors to whom correspondence should be addressed.
Academic Editor: Dirk Poelman
Materials 2015, 8(5), 2361-2375;
Received: 28 January 2015 / Revised: 8 April 2015 / Accepted: 10 April 2015 / Published: 30 April 2015
(This article belongs to the Special Issue Luminescent Materials and Devices)
SrF2:Eu,Ce3+ nanophosphors were successfully synthesized by the hydrothermal method during down-shifting investigations for solar cell applications. The phosphors were characterized by X-ray diffraction (XRD), scanning Auger nanoprobe, time of flight-secondary ion mass spectrometry (TOF-SIMS), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectroscopy. XRD showed that the crystallite size calculated with Scherrer’s equation was in the nanometre scale. XPS confirmed the formation of the matrix and the presence of the dopants in the SrF2 host. The PL of the nanophosphor samples were studied using different excitation sources. The phenomenon of energy transfer from Ce3+ to Eu2+ has been demonstrated. View Full-Text
Keywords: SrF2; cerium; TOF-SIMS; XPS; shake-down; energy transfer SrF2; cerium; TOF-SIMS; XPS; shake-down; energy transfer
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Yagoub, M.Y.A.; Swart, H.C.; Noto, L.L.; Bergman, P.; Coetsee, E. Surface Characterization and Photoluminescence Properties of Ce3+,Eu Co-Doped SrF2 Nanophosphor. Materials 2015, 8, 2361-2375.

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