Table 2 A set of calculated chromaticity coordinates (x,y) for GdVO4: x% Yb3+, 0.5% Tm3+, 5% Eu3+ phosphors under 310 nm and 975 nm excitation.

From: Luminescent materials with dual-mode excitation and tunable emission color for anti-counterfeiting applications

Sample

Chromaticity coordinates (x, y)

UV

NIR

GdVO4: 5% Yb3+, 0.5% Tm3+, 5% Eu3+

0.6495, 0.3202

0.3808, 0.2418

GdVO4: 10% Yb3+, 0.5% Tm3+, 5% Eu3

0.6424, 0.3183

0.3134, 0.2942

GdVO4: 15% Yb3+, 0.5% Tm3+, 5% Eu3+

0.6431, 0.3181

0.3411, 0.2672

GdVO4: 20% Yb3+, 0.5% Tm3+, 5% Eu3+

0.6338, 0.3172

0.2640, 0.1988