Abstract: InGaN-based blue LEDs and, specifically luminescent materials, are described containing yttrium oxide, oxides of rare earth metals, as well as aluminium oxide in proportions that yield a luminescent material whose average composition fits the general formula (Y1?x?yCex?Lny)3+?Al5O12+1.5?, where ?—defines increase in stoichiometric index over the known value for yttrium-gadolinium garnet and varies between 0.033 and 2; x—is atomic fraction of cerium, 0.0001-0.1; ?Lny —is one or more lanthanides from the Gd, Tb, La, Yb group, whose atomic fraction in an yttrium sub-lattice is 0.01<Gd<0.70; 0.001<Tb<0.2; 0.001<La<0.1; 0.001<Yb<0.1, respectively, while the difference for all the compositions [1?x?y]>0.

Abstract: The invention pertains to the field of lighting technology using InGaN-based blue LEDs and specifically to luminescent materials containing yttrium oxide, oxides of rare earth metals as well as aluminium oxide in proportions that yield a luminescent material whose average composition fits the general formula (Y1?x?yCex?Lny)3+?Al5O12+1.5?, where ?—defines increase in stoichiometric index over the known value for yttrium-gadolinium garnet and varies between 0.033 and 2; x—is atomic fraction of cerium, 0.0001-0.1; ?Lny—is one or more lanthanides from the Gd, Tb, La, Yb group, whose atomic fraction in an yttrium sub-lattice is 0.01<Gd<0.70; 0.001<Tb<0.2; 0.001<La<0.1; 0.001<Yb<0.1, respectively, while the difference for all the compositions [1?x?y]>0. For stoichiometric index (3+?) varying between 3.034 and 3.45, the proposed material is a phase of cubic structure.