| 摘要 |
PROBLEM TO BE SOLVED: To provide a manganese-activated rare earth aluminate phosphor with a high luminous intensity and an excellent color purity, and to provide a fluorescent lamp with a high light flux and a wide color reproduction range. SOLUTION: The manganese-activated rare earth aluminate phosphor represented by the following general formula has a high luminous intensity and a high color purity by the excitation with an ultraviolet ray, and the fluorescent lamp using the phosphor has a high light flux for a lamp with a wide color reproduction range. wherein the general formula is Ce(Mg<SB>a</SB>, Zn<SB>b</SB>, Mn<SB>c</SB>)<SB>z</SB>Al<SB>11</SB>O<SB>19</SB>(in the formula, 0.10≤z≤0.90, 0<a×z≤0.45, 0<b×z≤0.45, 0.05≤c×z≤0.50, a+b+c=1). COPYRIGHT: (C)2009,JPO&INPIT
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