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Materials 2015, 8(5), 2361-2375; doi:10.3390/ma8052361

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

1
Department of Physics, University of the Free State, PO Box 339, Bloemfontein, ZA 9300, South Africa
2
Department of Physics, Sudan University of Science and Technology, Khartoum 11113, Sudan
3
Department of Physics, Chemistry and Biology, Linköping University, Linköping S-581 83, Sweden
*
Authors to whom correspondence should be addressed.
Academic Editor: Dirk Poelman
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)
View Full-Text   |   Download PDF [2189 KB, uploaded 30 April 2015]   |  

Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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