title: KY(MoO4)2:Eu3+ Phosphor: Template-Free Hydrothermal Synthesis and Luminescent Properties.
abstract: KY(MoO4)2 microcrystals with different morphologies, including rhombic, sheet-like, rectangular plate-like, and hexagon plate-like, have been successfully synthesized via a simple hydrothermal method without using any templates, surfactant, or other organic additives by varying the molar ratios of Y(NO3)3/K2MoO4 and pH values of the resultant solutions. X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), photoluminescence (PL), and photoluminescent excitation spectra (PLE) were employed to characterize the samples. Furthermore, a systematic study on the photoluminescence of Eu3+ doped KY(MoO4)2 samples has been explored by varying experimental conditions. The strongest red emission can be observed clearly at 616 nm. And by controlling the doping concentration of Eu3+ in KY(MoO4)2 solutions, it can be seen that the concentration quenching occurs at 25 at.% for Eu3+. These results suggest that the well-crystallized KY(MoO4)2:Eu3+ microcrystals synthesized in our experiment can be used as a red component for white light emitting diodes (W-LEDs).
authors.forename: Yanling
authors.initials: Y
authors.lastname: Wei
authors.forename: Chunhui
authors.initials: C
authors.lastname: Su
authors.forename: Hongbo
authors.initials: H
authors.lastname: Zhang
authors.forename: Zuoling
authors.initials: Z
authors.lastname: Fu
mesh_terms: D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D008982:Molybdenum / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; D005063:Europium; D008982:Molybdenum