LUMINOPHOR FOR LIGHT SOURCES Russian patent published in 2010 - IPC C09K11/77 C09K11/80 H05B33/14 

FIELD: physics, optics.

SUBSTANCE: invention relates to photoluminophors designed for converting emission of blue light-emitting diodes to the yellow-red region of the spectrum in order to obtain resultant white light, particularly to a cerium doped luminophor based on yttrium aluminium garnet used in two-component light-emitting diode light sources. The invention describes a luminophor for light sources which contain aluminium, yttrium, cerium, lutetium and oxygen in the following ratio: (Y_1-xCe_x)₃Al₅O₁₂ and 5-60 wt % over 100% (Lu_1-yCe_y)₂O₃, where x=0.005-0.1; y=0.01-0.1. The invention provides a fine-grained luminophor with luminescent emission band maximum at λ≈590 nm, while lowering temperature and duration of synthesis.

EFFECT: use of such a luminophor in a two-component light source with a blue light-emitting diode enables to obtain resultant "warm" white light with high colour rendering index, increases uniformity of light scattering and reduces energy consumption during synthesis.

1 cl, 1 dwg, 6 ex