SrMoO4:Eu3+ micro-spheres with well morphology were fabricated by a one-step and template-free ultrasonic spray pyrolysis method using strontium nitrate and ammonium molybdate as precursors. The as-prepared products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectra (PL). The XRD results indicate that all the XRD peaks can be indexed as SrMoO4 with a pure tetragonal scheelite structure. The SEM photographs show that the sample particles are spheres with regular spherical shape. The excitation and emission spectra demonstrate that the phosphors could be excited effectively by the ultraviolet light with wavelength 394 nm or visible blue light with wavelength 466 nm, and the highest emission peak locates at 615 nm.

The pomponlike CaMoO4:Eu3+ red phosphors were synthesized via a ethylene glycol (EG)-mediated hydrothermal method in the presence of urea at 140 °C for 1 h. The structure, morphology and luminescent property were characterized and investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL). The results show that the Eu3+-doped CaMoO4 micropompons were well-crystallized and assembled by nanosheets. The products display a strong red emission under near ultraviolet (UV).