Phosphor, Production Method Thereof and Light Emitting Instrument
First Claim
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1. A phosphor, wherein the phosphor includes, as a main component, an inorganic compound comprising:
- a crystal represented by A2Si5−
xAlxOxN8−
x (A is a mixture of one kind or two or more kinds of element(s) selected from Mg, Ca, Sr, and Ba; and
x is a value between 0.05 inclusive and 0.8 inclusive); and
a metallic element M (M is one kind or two or more kinds of element(s) selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) dissolved, in a solid state, in the crystal.
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Abstract
The present invention aims at providing a chemically stabilized inorganic phosphor having an orange or red emission characteristic at higher luminance, and a light emitting instrument adopting the phosphor, for a lighting instrument excellent in color rendering property and for an image displaying apparatus excellent in durability. The solving means resides in provision of a fundamental phosphor comprising:
- a crystal represented by A2Si5−xAlxOxN8−x (A is a mixture of one kind or two or more kinds of element(s) selected from Mg, Ca, Sr, and Ba; and x is a value between 0.05 inclusive and 0.8 inclusive); and a metallic element M (M is one kind or two or more kinds of element(s) selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) dissolved, in a solid state, in the crystal.
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Citations
33 Claims
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1. A phosphor, wherein the phosphor includes, as a main component, an inorganic compound comprising:
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a crystal represented by A2Si5−
xAlxOxN8−
x (A is a mixture of one kind or two or more kinds of element(s) selected from Mg, Ca, Sr, and Ba; and
x is a value between 0.05 inclusive and 0.8 inclusive); and
a metallic element M (M is one kind or two or more kinds of element(s) selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) dissolved, in a solid state, in the crystal. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 25, 26, 27, 28, 29, 32)
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6. (canceled)
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16-24. -24. (canceled)
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30-31. -31. (canceled)
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33-34. -34. (canceled)
Specification