COMPOSITION, COLOR-CONVERTING SHEET AND LIGHT-EMITTING DIODE APPARATUS Russian patent published in 2021 - IPC C09K11/08 C08K3/10 A01G9/22 F21S13/00 F21Y115/10 A01G13/02 

FIELD: inorganic chemistry.

SUBSTANCE: invention relates to inorganic chemistry and may be used in manufacture of color-converting sheets for agriculture, optical and light-emitting diode apparatuses. Composition includes at least one inorganic fluorescent material with peak light emission wavelength of 660 to 730 nm, and matrix material additionally containing one or several bromine-containing or sulphur-containing monomers. Inorganic fluorescent material is selected from sulfides, thiogallates, nitrides, oxynitrides, silicates, metal oxides, apatites, quantum-dimensional materials or combinations thereof, for example, from metal oxide phosphors, such as Al₂O₃:Cr³⁺, Y₃Al₅O₁₂:Cr³⁺, MgO:Cr³⁺, ZnGa₂O₄:Cr³⁺, MgAL₂O₄:Cr³⁺ or combinations thereof. Matrix material is selected from photochemically curable, thermosetting thermoplastic polymers or combinations thereof. For manufacture of a color-converting sheet said composition is applied to a base and the matrix material is affixed by evaporation of a solvent and/or polymerization by thermal treatment, exposure to rays of light, or combination thereof. Produced color-converting sheet is placed in an optical or light-emitting diode apparatus 200 containing at least one indicated inorganic fluorescent material 210, indicated matrix material 220, light-emitting diode element 230, cables 240, forming material 250, cup 260a, assembly output 260b and inner output 270.

EFFECT: color-converting sheet, optical or light-emitting diode apparatus provide for transmission of blue light and have improved UV-resistance, color resistance and color permanence, as well as contribute to plant growth.

27 cl, 5 dwg, 5 ex