LUMINESCENT MATERIAL FOR SOLID-STATE SOURCES OF WHITE LIGHT

摘要

The invention relates to the field of lighting technology on the basis of blue-radiating light-emitting diodes and, in particular, to luminescent materials comprising yttrium oxide, ceric oxide and aluminium oxide, which are taken in a ratio ensuring the production of a light-radiating composition, the content of which corresponds to general formula (Y1-xCex)3±αAl5O12±1,5α,; x is the atomic fraction of cerium equal to 0.01-0.20; whereαis the magnitude characterizing an increase or decrease in the stoichiometric index in comparison to the known index (3) for yttrium garnet and changing within a range from zero to 0.5 for positive values and from 0 to 1.5 for negative values, excludingα=0 from the set of possible values. At 0.03