Fig. 21

Represent CIE chromaticity diagram from Na2Ca4(PO4)3F: 2.5 mol % Dy3+- 2.5 mol % Tb3+- x mol % Eu3+ (x = 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 mol %) phosphors.

Represent CIE chromaticity diagram from Na2Ca4(PO4)3F: 2.5 mol % Dy3+- 2.5 mol % Tb3+- x mol % Eu3+ (x = 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 mol %) phosphors.