COMPLEX ACTING PHOSPHOR BASED ON RARE EARTH ELEMENTS OXYSULFIDE ACTIVATED BY Ho3+ AND Yb3+ IONS

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FIELD : chemistry. SUBSTANCE : complex acting phosphorbased on the rare earth elements oxysulfides, activated by Ho3+ ions and sensitized by Yb3+ ions, has a chemical composition corresponding to the following empirical formula : , where Ln is one of Y3+, La3+, Gd3+ ions; Me1 is one of the ions of the Periodic System group II elements - Ca2+, Sr2+, Ba2+; Me2 is one of the ions of groups IV (Ti4+, Zr4+, Si4+), or V (Nb5+, Ta5+) elements of the Periodic System; 0.01≤x≤ 0.2; 0.0005≤y≤0.01; 0.01≤d≤0.1; 0, 005≤c≤0.05. EFFECT : invention allows to increase the photostimulated quenching of visible anti-Stokes luminescence without significant changes to the initial radiation source spectral composition at single-photon excitation by IR radiation in the range of 0, 94-0, 98 microns. 1 tbl, 4 dwg, 17 ex