Alpha-Sialon fluorescent body and light-emitting device
AssigneeDenka Company Limited
InventorsYusuke Takeda, Tomohiro Nomiyama, Shintaro Watanabe
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Abstract
An α-sialon phosphor represented by general formula: MxEuy(Si,Al)12(O,N)16, where M represents at least one or more elements selected from Li, Mg, Ca, Y and a lanthanoid (excluding La and Ce), 0<x, and 0<y, where the phosphor includes, as a host crystal, a crystal structure identical to that of an α-sialon crystal phase, and the phosphor has a bulk density of 1.00 g/cm3 or more and 1.80 g/cm3 or less. Also provided is a light-emitting element including the α-sialon phosphor and a semiconductor light-emitting element capable of exciting the α-sialon phosphor.
Claims8
An α-sialon phosphor represented by general formula:
- MxEuy(Si,Al)12(O,N)16,
- wherein M represents at least one or more elements selected from Li, Mg, Ca, Y and a lanthanoid (excluding La and Ce), 0.9<x<2.2, and 0<y,
- wherein the phosphor includes, as a host crystal, a crystal structure identical to that of an α-sialon crystal phase, wherein the phosphor has a bulk density of 1.00 g/cm3 or more and 1.80 g/cm3 or less.
Dependencies are inferred from the claim text.