| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for efficiently producing a particulate phosphor represented by Y(V, P)O<SB>4</SB>:A, wherein A represents a rare earth metal other than yttrium, whose luminance is less reduced by initial UV irradiation. SOLUTION: The process comprises the following steps: (1) a step to prepare a composition (I) containing an yttrium compound, a compound of a rare earth metal other than yttrium, and a complex-forming compound in water; (2) a step to prepare a composition (II) containing a vanadium compound and a phosphorus compound in water; and (3) a step to mix and react the compositions (I) and (II). COPYRIGHT: (C)2010,JPO&INPIT
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