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Start Over Author "Matei, L." Journal optical materials
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2. Preparation and optical properties of BaFCl:Eu2+ X-ray storage phosphor

Author

Matei L, Silion C, Apostol E, M. Secu, Serban T, and Aldica Gh

Subjects
Photoluminescence, Aqueous solution, Chemistry, Photostimulated luminescence, Coprecipitation, Organic Chemistry, Analytical chemistry, chemistry.chemical_element, Phosphor, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Microcrystalline, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Luminescence, Europium, Spectroscopy, Nuclear chemistry
Abstract

A new method for the preparation of BaFCl:Eu2+ has been developed. A coprecipitation chemical reaction between BaCl2 and NaF acidified aqueous solution has been used. Doping with Eu2+ was carried out by adding EuF3 during preparation time. A thermal treatment in vacuum similar to those used in the sintering process of supraconductive ceramics was used in order to accomplish the chemical reaction and to improve the homogeneity of europium ion distribution. Finally, a fine powder consisting of microcrystalline, 4–5 μm grains was obtained. The product has been checked by X-ray diffractometry and characterised by optical methods. Photoluminescence (PL) measurements attest the europium impurification and oxygen contamination during preparation, which has a great importance for the photostimulability properties of the compound. Photostimulated luminescence (PSL) of the X-irradiated samples shows good performance as X-ray storage phosphor.

Published
2000

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