LUMINOPHOR OF COMPLEX PRINCIPLE OF ACTION ON BASIS OF YTTRIUM, LANTHANUM AND GADOLINIUM OXYSULFIDES, ACTIVATED WITH IONS OF Yb3+ AND Tm3+ Russian patent published in 2017 - IPC C09K11/84 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry. Luminophor of complex action on based on oxysulfides of yttrium, lanthanum, gadolinium, activated with ions Tm³⁺ and sensitised ions Yb³⁺, has following chemical composition: (Ln_1-x-y-d-cYb_xTm_yMe¹_dMe²_c)₂O₂S, where Ln is at least one of ions Y³⁺, La³⁺, Gd³⁺; Me¹ – of at least one ion of Group II elements of periodic table of elements – Ca²⁺, Sr²⁺, Ba²⁺; Me² – at least one of ions of elements IV (Ti⁴⁺, Zr⁴⁺, Si⁴⁺) or V (Nb⁵⁺, Ta⁵⁺) of groups of periodic table; 0.05≤x≤0.25; 0.0005≤y≤0.005; 0.01≤d≤0.1; 0.005≤c≤0.05. Invention provides increased photostimulated extinction of Stokes infrared luminescence of ions Yb³⁺ in region of 0.96–1.12 mcm, visible anti-Stokes and Stokes infrared luminescence of ions Tm³⁺ in region of 0.465–0.495 mcm, 0.79–0.84 mcm and 1.65–1.98 mcm without considerable change in spectral composition of initial radiation during combined effect of exciting infrared radiation in region of 0.94–0.98 mcm and stimulating radiation in region of 0.30–0.75 mcm.

EFFECT: invention can be used in making articles for detecting modulated radiation of multispectral composition.

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