Article ID Journal Published Year Pages File Type
1521607 Materials Chemistry and Physics 2015 6 Pages PDF
Abstract

•Optimal parameters for preparation of core-shell BaFBr:Eu2+@SiO2 are presented here.•BaFBr:Eu2+ grains size of about 30 nm and 11 nm SiO2 shell thickness were prepared.•The core-shell heterostructure exhibits Eu2+ luminescence at 385 nm.

Core-shell composites BaFBr:Eu2+@SiO2 were synthesized starting from BaFBr:Eu2+ nanophosphor powder prepared by precipitation method, followed by a silica gel coating process. Electron microscopy investigations have shown an average BaFBr:Eu2+ grains size of about 30 nm and 11 nm SiO2 shell thickness. The core-shell heterostructure exhibits Eu2+ luminescence at 385 nm that is improved during subsequent calcination at high temperatures up to 700 °C; the core-shell morphology (size and thickness) structure is preserved during the calcination.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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