Sol–gel synthesis of red-phosphors [NaxGd1−x/3−zEuz]MoyW1−yO4 powers and luminescence properties

Abstract In this work, we report on the sol–gel synthesis of red-phosphors [NaxGd1−x/3−zEuz]MoyW1−yO4 powders doped with several dopants and its luminescence properties at room temperature. X-ray diffraction patters indicated that red-phosphors powders present tetragonal symmetry and cubic structure. The red-phosphors [NaxGd1−x/3−zEuz]MoyW1−yO4 powders doped exhibit characteristic of a ultraviolet visible-light emission diode. The SEM images for [ Na 0.9 Gd 0.62 Eu 0.04 3 + ]Mo0.4W0.6O4 phosphor exhibits irregular morphology and cottonlike shape. The size of the particles is estimated to be about 1 μm. Luminescence properties showed that the maximum emission in red region lies in the arrange of 613 nm and 617 nm.