Red phosphor material and light-emitting device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsOsamu Inoue, Kojiro Okuyama, Mitsuru Nitta, Seigo Shiraishi
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Abstract
A red phosphor material comprising an essential component represented by a formula of ALn1-x-yEuxSmyM2O8 as a main component, where A represents at least one selected from Li, Na, and K; Ln represents at least one selected from La and Gd; M represents at least one selected from W and Mo; and x and y are numerical values that satisfy 0.1≦x+y≦0.7 and 0.005≦y≦0.08. A light-emitting device includes an excitation light source and the red phosphor material that absorbs excitation light emitted by the excitation light source and emits red light.
Claims12
A red phosphor material comprising an essential component represented by a formula of ALn1-x-yEuxSmyM2O8 as a main component,
- where A represents at least one selected from Li, Na, and K;
- Ln represents at least one selected from La and Gd;
- M represents at least one selected from W and Mo;
- and x and y are numerical values that satisfy 0.1≦x+y≦0.7 and 0.005≦y≦0.08.
A light-emitting device comprising an excitation light source and a red phosphor material that absorbs excitation light emitted by the excitation light source and emits red light, the red phosphor material comprising an essential component represented by a formula of ALn1-x-yEuxSmyM2O8 as a main component,
- where A represents at least one selected from Li, Na, and K;
- Ln represents at least one selected from La and Gd;
- M represents at least one selected from W and Mo;
- and x and y are numerical values that satisfy 0.1≦x+y≦0.7 and 0.005≦y≦0.08.
Dependencies are inferred from the claim text.