A new multifunctional phosphor based on yttrium oxysulfide

Novel one-component multifunctional phosphors with the general formula Y1.975-x Yb0.025Er x O2S:Ti0.12Mg0.04 have been prepared via sulfiding of rare-earth, titanium, and magnesium oxides in melts of different sulfur-containing compounds of alkali metals and mineralizers under an SO2 atmosphere. The...

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Bibliographic Details
Published in:Inorganic materials 2007-10, Vol.43 (10), p.1073-1079
Main Authors: Georgobiani, A. N., Bogatyreva, A. A., Ishchenko, V. M., Manashirov, O. Ya, Gutan, V. B., Semendyaev, S. V.
Format: Article
Language:English
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Summary:Novel one-component multifunctional phosphors with the general formula Y1.975-x Yb0.025Er x O2S:Ti0.12Mg0.04 have been prepared via sulfiding of rare-earth, titanium, and magnesium oxides in melts of different sulfur-containing compounds of alkali metals and mineralizers under an SO2 atmosphere. The phosphors combine a long afterglow with anti-Stokes luminescence and offer unique optical emission properties: yellow luminescence under cw UV excitation with a broadband afterglow around lambdamax = 626 nm, predominantly narrow-band green anti-Stokes luminescence with lambdamax = 546 nm under 0.96-mum IR excitation, and red anti-Stokes luminescence with lambdamax = 670 nm under 1.55-mum IR excitation. Owing to this combination of luminescent properties, the phosphors have considerable potential for practical application.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168507100093