Valences of Dopants in $\mathrm{Eu^{2+}}$ Persistent Luminescence Materials

Lastusaari, M.; Welter, E.; Carlson, S.; Laamanen, T.; Rodrigues, L. C. V.; Brito, H. F.; Hölsä, J.

doi:10.1088/0031-8949/89/04/044004

Journal Article

PUBDB-2015-01181

Valences of Dopants in $\mathrm{Eu^{2+}}$ Persistent Luminescence Materials

Lastusaari, M. (Corresponding Author)>Extern* ; Brito, H. F. ; Carlson, S. ; Hölsä, J.>Extern* ; Laamanen, T.>Extern* ; Rodrigues, L. C. V. ; Welter, E.DESY*

2014
IoP Publ. Bristol

Physica scripta 89(4), 044004 (2014) [10.1088/0031-8949/89/04/044004]

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Please use a persistent id in citations: doi:10.1088/0031-8949/89/04/044004

Abstract: The existence and effect of different rare earth $(R^{2+/3+/IV})$ ions in $SrAl_{2}O_{4}:Eu^{2+},R^{3+}$ and $M_{2}MgSi_{2}O_{7}:Eu^{2+},R^{3+}$ (M: Sr, Ba) persistent luminescence materials was studied with XANES (x-ray absorption near edge structure) measurements at HASYLAB/DESY (Hamburg, Germany) and MAX-lab (Lund, Sweden). The experiments were carried out at 298 K for selected rare earth (co-)dopants $(Eu^{2+}; Ce^{3+}, Nd^{3+}, Sm^{3+}, Dy^{3+}$ and $Yb^{3+}$). The co-existence of $Eu^{2+}$ and $Eu^{3+}$ was observed in all materials. The co-dopants were always in the trivalent form.

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