Abstract
Two synthesis routes, solid-state reaction and precipitation reaction, were employed to prepare BaSiO3 :Eu2+ phosphors in this study. Discrepancies in the luminescence green emission at 505nm for the solid-state reaction method sample and in the yellow emission at 570nm for the sample prepared by the precipitation reaction method, were observed respectively. A detail investigation about the discrepant luminescence of BaSiO3 :Eu2+ phosphors was performed by evaluation of X-ray diffraction (XRD), photoluminescence (PL)/photoluminescence excitation (PLE), decay time and thermal quenching properties. The results showed that the yellow emission was generated from the BaSiO3 :Eu2+ phosphor, while the green emission was ascribed to a small amount of Ba2 SiO4 :Eu2+ compound that was present in the solid-state reaction sample. This work clarifies the luminescence properties of Eu2+ ions in BaSiO3 and Ba2 SiO4 hosts.
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