| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphor capable of giving a light emitting device maintaining a high quality, and to provide the light emitting device having the high quality. <P>SOLUTION: The phosphor comprises providing a core particle comprising an alkaline earth metal silicate phosphor having a composition represented by the formula (1): (M<SB>1-x</SB>Eu<SB>x</SB>)<SB>2</SB>Si<SB>y</SB>O<SB>2y+2</SB>(wherein M is at least one of an alkaline earth metal element selected from the group consisting of Ca, Sr, and Ba; x is 0.001-0.1; and y is 0.9-1.1), and a surface layer material arranged on a surface of the core particle, the material comprising at least one selected from among a silicone resin, an epoxy resin, a fluorine resin, tetraethoxysilane, silica, zinc silicate, aluminum silicate, a silicone oil, and a silicone grease, and a light emission spectrum when excited with a wavelength of 360-500 nm light causing a main peak comprising a single light emitting peak between wavelengths of 540-610 nm. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
