Phosphor and manufacturing method for the same, and light emitting device using the phosphor
First Claim
1. A phosphor, which is given by a general composition formula expressed by MmAaBbOoNn:
- Z, (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, 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 acting as the activator, satisfying 2.5<
(a+b)/m<
4.5, 0<
a/m<
2.0, 2.0<
b/m<
4.0, 0<
o/m<
1.0, o<
n, n=2/3m+a+4/3b−
2/3o.
3 Assignments
0 Petitions
Accused Products
Abstract
To provide a phosphor having an emission spectrum with a broad peak in range from green color to red color, and having excellent emission efficiency and luminance. A phosphor is provided, which is given by a general composition formula expressed by MmAaBbOoNn:Z, (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, 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 acting as an activator.), satisfying 2.5<(a+b)/m<4.5, 0<a/m<2.0, 2.0<b/m<4.0, 0<o/m<1.0, o<n, n=2/3 m+a+4/3b−2/3o.
-
Citations
22 Claims
-
1. A phosphor, which is given by a general composition formula expressed by MmAaBbOoNn:
- Z, (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, 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 acting as the activator, satisfying 2.5<
(a+b)/m<
4.5, 0<
a/m<
2.0, 2.0<
b/m<
4.0, 0<
o/m<
1.0, o<
n, n=2/3m+a+4/3b−
2/3o. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- Z, (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, 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 acting as the activator, satisfying 2.5<
Specification