Abstract
We have developed a procedure for thermally stimulated synthesis of a cesium strontium metavanadate, Cs2Sr(VO3)4:Mn2+ (0.01, 0.50, 1.00, 5.00 at % Mn2+), using MnO-containing starting mixtures. The EPR spectrum of the material containing 0.01 at % Mn2+ shows a hyperfine structure due to the incorporation of a small amount of manganese into the diamagnetic double metavanadate host. The luminescent and optical properties of Cs2Sr(VO3)4:Mn2+ depend on manganese content. In contrast to higher doping levels, doping with 0.01 at % Mn2+ increases the integrated emission intensity of the vanadate by 10% and improves its chromaticity characteristics (approaching them to those of white light). We assume that this is due to the reduction in the density of vacancy-type growth defects, such as oxygen vacancies.
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Original Russian Text © B.V. Slobodin, A.V. Ishchenko, R.F. Samigullina, B.V. Shul’gin, M.A. Melkozerova, E.V. Zabolotskaya, 2012, published in Neorganicheskie Materialy, 2012, Vol. 48, No. 5, pp. 606–610.
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Slobodin, B.V., Ishchenko, A.V., Samigullina, R.F. et al. Structure and luminescent properties of Cs2Sr(VO3)4:Mn2+ . Inorg Mater 48, 520–524 (2012). https://doi.org/10.1134/S0020168512050196
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DOI: https://doi.org/10.1134/S0020168512050196