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Surface Characterization and Photoluminescence Properties of Ce3+, Eu Co-Doped SrF2 Nanophosphor
University of Orange Free State, South Africa; Sudan University of Science and Technology, Sudan.
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.
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2015 (English)In: Materials, ISSN 1996-1944, Vol. 8, no 5, 2361-2375 p.Article in journal (Refereed) Published
Abstract [en]

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 Scherrers 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.

Place, publisher, year, edition, pages
MDPI , 2015. Vol. 8, no 5, 2361-2375 p.
Keyword [en]
SrF2; cerium; TOF-SIMS; XPS; shake-down; energy transfer
National Category
Chemical Sciences
URN: urn:nbn:se:liu:diva-120292DOI: 10.3390/ma8052361ISI: 000356879100022OAI: diva2:843006

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

Available from: 2015-07-24 Created: 2015-07-24 Last updated: 2015-08-04

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