Phosphor and manufacturing method for the same, and light source
First Claim
1. A phosphor, which is given by a general composition formula expressed by MmAaDbOoNn:
- Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is at least one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, expressed by m=a=b=1 and n=2/3m+a+4/3b−
2/3o), and further containing fluorine or boron and fluorine.
1 Assignment
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Accused Products
Abstract
To provide a phosphor having an emission spectrum with a broad peak in a range from yellow color to red color (580 nm to 680 nm) and an excellent excitation band on the longer wavelength side from near ultraviolet/ultraviolet of excitation light to visible light (250 nm to 550 nm), and having an improved emission intensity. The phosphor is provided, which is given by a general composition formula expressed by MmAaBbOoNn:Z, (wherein element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element B is more than one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element selected from rare earth elements or transitional metal elements, satisfying m>0, a>0, b>0 o≧0, and n=2/3m+a+4/3b−2/3o), and further containing boron and/or fluorine.
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Citations
8 Claims
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1. A phosphor, which is given by a general composition formula expressed by MmAaDbOoNn:
- Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is at least one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, expressed by m=a=b=1 and n=2/3m+a+4/3b−
2/3o), and further containing fluorine or boron and fluorine. - View Dependent Claims (3, 4, 5, 6, 7, 8)
- Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is at least one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, expressed by m=a=b=1 and n=2/3m+a+4/3b−
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2. A manufacturing method of a phosphor, containing a phosphor crystal which is given by a general composition formula expressed by MmAaDbOoNn:
- Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is at least one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, and further containing fluorine or boron and fluorine expressed by m=a=b=1, and n=2/3m+a+4/3b−
2/3o),said method comprising the steps of; weighing and mixing the raw materials in an inert atmosphere to manufacture a mixture; firing this mixture to manufacture a fired substance, and pulverizing this fired substance to manufacture the phosphor, wherein a fluorine compound or a boron compound and a fluorine compound are further added to a raw material for forming the phosphor expressed by the composition formula MmAaDbOoNn;
Z.
- Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is at least one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, and further containing fluorine or boron and fluorine expressed by m=a=b=1, and n=2/3m+a+4/3b−
Specification