Ceramic composite, phosphor for projector including the same, and light emitting device for projector including the same
A ceramic composite contains inorganic materials and includes a phosphor phase including YAG containing Ce, and a scatterer phase including a translucent ceramic, in which the phosphor phase is contained in an amount of 90 vol % or more and 99 vol % or less, and the scatterer phase is contained in an amount of 1 vol % or more and 10 vol % or less.
1. A ceramic composite comprising inorganic materials and comprising: a phosphor phase comprising YAG containing Ce; and a scatterer phase comprising a translucent ceramic, wherein:
the phosphor phase is contained in an amount of 90 vol % or more and 99 vol % or less; and
the scatterer phase is contained in an amount of 1 vol % or more and 10 vol % or less.
2. The ceramic composite according to claim 1 , wherein
the phosphor phase has an average crystal particle size of 1 μm or more and 15 μm or less, and
the scatterer phase has an average crystal particle size of 0.5 μm or more and 2 μm or less.
3. A phosphor for a projector, comprising a phosphor layer comprising the ceramic composite described in claim 1 .
4. A light emitting device for a projector, comprising the phosphor for a projector described in claim 3 , and a light source by which the phosphor layer of the phosphor is irradiated with an excitation light.
5. The ceramic composite according to claim 1 , further comprising a thickness of approximately 0.05 mm to approximately 1 mm.
6. The ceramic composite according to claim 1 , further comprising one or more surfaces that are non-machined surfaces and comprise surface roughness of approximately 0.01 μm or more and approximately 0.3 μm or less according.
7. A ceramic composite comprising inorganic materials and comprising: a phosphor phase comprising BAl 5 O 12 containing Ce (B is at least one kind selected from rare earth elements excluding Ce); and a scatterer phase comprising a translucent ceramic, wherein:
the phosphor phase is contained in an amount of 90 vol % or more and 99 vol % or less; and
the scatterer phase is contained in an amount of 1 vol % or more and 10 vol % or less.
8. The ceramic composite according to claim 7 , wherein
the phosphor phase has an average crystal particle size of 1 μm or more and 15 μm or less, and
the scatterer phase has an average crystal particle size of 0.5 μm or more and 2 μm or less.
9. A phosphor for a projector, comprising a phosphor layer comprising the ceramic composite described in claim 7 .
10. A light emitting device for a projector, comprising the phosphor for a projector described in claim 9 , and a light source by which the phosphor layer of the phosphor is irradiated with an excitation light.
11. The ceramic composite according to claim 7 , further comprising a thickness of approximately 0.05 mm to approximately 1 mm.
12. The ceramic composite according to claim 7 , further comprising one or more surfaces that are non-machined surfaces and comprise surface roughness of approximately 0.01 μm or more and approximately 0.3 μm or less according.