Phosphorescent phosphor and method for producing the same, and phosphorescent product
AssigneesNational Institute of Advanced Industrial Science and Technology, Tateyama Kagaku Industry Co., Ltd.
InventorsTetsuo TSUCHIYA, Yuuko UZAWA, Iwao YAMAGUCHI, Tomohiko NAKAJIMA, Takumi HIGA
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Abstract
The phosphorescent phosphor of the present invention is represented by the composition formula: Sr1-aMgbZncAl2O4;EudMe wherein a, b, c, d, and e satisfy 0.05≤a≤0.8, 0.01≤b≤0.1, 0≤c≤0.2, 0≤d≤0.2, and 0≤e≤0.15, respectively, and M represents at least one element selected from the group consisting of dysprosium, samarium, lanthanum, praseodymium, terbium, holmium, thulium, lutetium, ytterbium, erbium, gadolinium, neodymium and cerium, and emits light due to excitation light in a wavelength region of 430 to 480 nm.
Claims11
A phosphorescent phosphor represented by the following composition formula (1):
- Sr1-aMgbZncAl2O4;EudMc (1)
- wherein a, b, c, d, and e satisfy 0.05≤a≤0.8, 0.01≤b<0.1, 0≤c≤0.2, 0≤d≤0.2, and 0≤e≤0.15, respectively, and M represents at least one element selected from the group consisting of dysprosium, samarium, lanthanum, praseodymium, terbium, holmium, thulium, lutetium, ytterbium, erbium, gadolinium, neodymium and cerium;
- wherein the phosphorescent phosphor emits light due to excitation light in a wavelength region of 430 to 480 nm.
Dependencies are inferred from the claim text.