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发明授权
CN105073948B 氧氮化物荧光体粉末及其制造方法 失效 - 权利终止

氧氮化物荧光体粉末及其制造方法
摘要：
本发明提供具有610～625nm的荧光峰波长，并且其外量子效率比以往同类产品高的氧氮化物荧光体粉末。本发明的氧氮化物荧光体粉末的特征在于，含有α型塞隆和氮化铝，由组成式：Cax1Eux2Si12‑(y+z)Al(y+z)OzN16‑z(式中，x1、x2、y、z满足：1.60≤x1+x2≤2.90、0.18≤x2/x1≤0.70、4.0≤y≤6.5、0.0≤z≤1.0)表示。进而，优选还含有50～10000ppm的Li。氮化铝的含量优选处于大于0质量％至小于33质量％的范围。
摘要（英）：

Provided is an oxynitride phosphor powder which has a fluorescence peak wavelength of 610 to 625 nm and also has higher external quantum efficiency than the conventional one. The oxynitride phosphor powder according to the present invention is characterized by comprising an ±-type SiAlON and aluminum nitride, represented by the compositional formula: Ca x1 Eu x2 Si 12-(y+z) Al (y+z) O z N 16-z (wherein x1, x2, y, z fulfill the following formulae: 1.60 ‰¤ x1+x2 ‰¤ 2.90, 0.18 ‰¤ x2/x1 ‰¤ 0.70, 4.0 ‰¤ y ‰¤ 6.5, 0.0 ‰¤ z ‰¤ 1.0). It is preferable that the powder additionally contains Li in an amount of 50 to 10000 ppm. It is also preferable that the content of the aluminum nitride is from more than 0 mass% to less than 33 mass%.

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