| 摘要 |
PROBLEM TO BE SOLVED: To provide a high luminance composite nitride or oxynitride phosphor. SOLUTION: In the phosphor having a nitride or oxynitride as the host, the supernatant obtained by dispersing the phosphor in water in an amount of 10 times by weight the weight of the phosphor, and thereafter leaving the resulting dispersion to stand for one hour has electrical conductivity of not more than 50 mS/m. In the light-emitting device having an excitation light source and a phosphor which makes the wavelength conversion of at least part of the light from the excitation light source, this phosphor is used as the phosphor. COPYRIGHT: (C)2008,JPO&INPIT
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