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The effect of ligand-to-Eu3+ charge-transfer transitions (LMCT) on the photoluminescence intensity of M2SiO4: Eu3+ (M = Ca, Zn) type phosphors

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Öztürk E. , Karacaoglu E.

Materials Science Poland

2018

tom Vol. 36, No. 3

509--513

In this study, silicate systems, M2SiO4 (M = Ca, Zn) were produced by solid state reaction and doped with 1 mol% Eu3+ rare-earth ion. Their heat treatments, which were conducted at 1200 degrees C and above for minimum 3 hours under an open atmosphere, were applied according to the DTA/TG results. Powder X-ray diffraction XRD analyses were performed to determine the phase properties of the phosphor systems after the sintering process. It was proved that the structures of two of the phosphor systems were well formed in except that the Zn2SiO4 had some ZnO secondary phases. The expected photoluminescence (PL) results were presented and the transitions of the Eu3+ ions were observed for both phosphors.