LUMINOPHORE FOR WHITE LIGHT EMITTING DIODES Russian patent published in 2015 - IPC C09K11/78 C09K11/80 C09K11/81 C09K11/83 C09K11/85 

FIELD: chemistry.

SUBSTANCE: invention relates to the chemical industry and can be used in white light emitting diodes. A luminophore has the following stoichiometric formula $$\begin{array}{c}{\left(Y_{\mathrm{0,65}\pm x}G{d}_{\mathrm{0,30}\pm x}L{u}_{\mathrm{0,01}}T{b}_{\mathrm{0,01}}C{e}_{\mathrm{0,03}}\right)}_3{\left(A{l}_{19y}{B}_{\mathrm{0,1}}\right)}_2{\left(Al{O}_{\mathrm{3,96}}C{l}_{\mathrm{0,02}}{P}_{\mathrm{0,02}}\right)}_3\\ 0.05\le x\le \mathrm{0.15,}0.02\le y\le 0.04\end{array}$$ with the quantum output Q>0.9, a cubical structure of a garnet with the spatial group Ia3d with spectral parameters: λ_ex = 460+_3 nm; λ_r = 570+_3 nm, where λ_ex is a wavelength of the luminophore excitation; λ_r is a wavelength of the luminophore radiation. The luminophore makes it possible to create the light-emitting diodes with light intensity about 400 cd for an opening angle Δ larger or equal to 16°, light output of 100÷115 lm/W for the excitation mode 3.5 V and 120 mA.

EFFECT: colour of the emitted light is close to the warm-white colour, which makes it possible to apply the obtained luminophore in effective light-diode lamps for outdoor and indoor illumination.

5 cl, 4 dwg, 1 ex, 1 tbl