Photoluminescence and cathodoluminescence properties of Eu3+ ions activated AMoO4 (A=Mg, Ca, Sr, Ba) phosphors

Abstract Eu 3+ -activated AMoO 4 (A = Mg, Ca, Sr, Ba) phosphors were synthesized by a solid-state reaction method. Photoluminescence and cathodoluminescence (CL) spectra as well as X-ray diffraction patterns were measured to characterize the fabricated samples. Under 393 nm excitation, strong red emissions located at ∼615 nm corresponding to the 5 D 0 → 7 F 2 transition of Eu 3+ ions were observed in all the samples. Compared with other Eu 3+ ions activated AMoO 4 (A = Mg, Sr, Ba) phosphors, Eu 3+ -activated CaMoO 4 phosphor exhibited the strongest red emission intensity with better Commission Internationale de L’Eclairage chromaticity coordinate and higher color purity. Furthermore, the CL results indicated that the Eu 3+ -activated CaMoO 4 phosphor had excellent luminescence properties.