Blue light-emitting phosphor and light-emitting device using same
AssigneeUbe Material Industries, Ltd.
InventorsKouichi Fukuda, Jin Amagai, Seiji Noguchi, Toru Inagaki, Masaki Tanaka
Life of this patent
Estimating the term…
Abstract
A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of Sr3MgSi2O8 which contains Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and further a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, gives an emission with enhanced emission strength when it is excited with a light having a wavelength in the region of 350 to 430 nm.
Claims7
A blue light-emitting Eu-activated silicate phosphor having a constitutional formula of Sr3MgSi2O8 containing Eu in an amount of 0.001 to 0.2 mol per one mole of Mg and a rare earth metal element selected from the group consisting of Sc, Y, Gd, Tb and La in an amount of 0.0001 to 0.03 mol, per one mole of Mg, said Eu-activated silicate phosphor emitting a blue light when it is excited with a light having a wavelength region of 350 to 430 nm.
Dependencies are inferred from the claim text.