摘要：Various novel Ca 2 MgTeO 6 :Tm 3+ blue-emitting tellurate materials were synthesized via solid-state reaction. The structure and phase purity of prepared Ca 2 MgTeO 6 : x Tm 3+ ( x = 0.0025-0.10 mol) were examined by X-ray powder diffraction. The Ca 2 MgTeO 6 :Tm 3+ phosphors emit blue emission at 359 nm excitation. The optimum doping concentration was 0.02 mol. The concentration quenching mechanism in the Ca 2 MgTeO 6 host was due to the electric dipole-dipole interaction. The The CIE chromaticity coordinates of Ca 2 MgTeO 6 :Tm 3+ phosphors located in the blue region. These results validated the Ca 2 MgTeO 6 :Tm 3+ tellurate phosphor can be used as good blue-emitting candidate for W-LEDs.
