Development of Eu-Doped High Photoluminescence White Light Phosphor Technology for Industrial Production

Europium-doped phosphors, including CaTiO3 (red, R), Ca2MgSi2O7 (green, G), and BaMgAl10O17 (blue, B), with varying concentrations of Eu2O3, were prepared using the solid-state reaction method. The morphological characteristics, crystal structures, and luminescence emission properties of the R, G, and B phosphors were investigated. The CIE chromaticity coordinates for CaTiO3:0.085 Eu3+, Ca2MgSi2O7:0.025 Eu2+, and BaMgAl10O17:0.06 Eu2+ phosphors were located at (x = 0.343, y = 0.618), (x = 0.285, y = 0.547), and (x = 0.153, y = 0.938), corresponding to bright red, green, and blue colors, respectively. Additionally, a white light-emitting phosphor was successfully fabricated with the molar ratio of 40:5:1 for CaTiO3:0.085 Eu3+/Ca2MgSi2O7:0.025 Eu2+/BaMgAl10O17:0.06 Eu2+. The CIE chromaticity coordinates of the white light-emitting phosphor were (0.325, 0.291), located in the vicinity of the pure white light coordinates (0.33, 0.33).