| 摘要 |
PROBLEM TO BE SOLVED: To provide a blue light-emitting silicate phosphor improved in emission luminance, a phosphor paste and a vacuum ultraviolet-excited light-emitting element improved in luminance. SOLUTION: The silicate phosphor comprises Ca, Eu, Mg, Si and La, and is represented by the formula: (Ca<SB>1-x</SB>Eu<SB>x</SB>)O aMgO bSiO<SB>2</SB>cLa<SB>2</SB>O<SB>3</SB>(wherein a, b, c and x satisfy 0.9≤a<1.1, 1.9≤b≤2.2, 0<c≤2.5×10<SP>-2</SP>, and 5×10<SP>-3</SP>≤x≤0.1, respectively). The phosphor paste composition comprises the phosphor. The vacuum ultraviolet-excited light-emitting element is provided with a phosphor film comprised of the phosphor. COPYRIGHT: (C)2004,JPO
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