Eu³⁺ doped K-Lu-F system optical materials: controlling synthesis, phase evolution, and optical properties

谢安，刘小磊，熊禹诚

School of Materials Science and Engineering Xiamen University of Technology

摘 要：Using a hydrothermal method,by adjusting the reactant ratios,the hydrothermal temperatures,the hydrothermal time,and the pH values of prepared solutions,1 mol.%Eu³⁺ doped K-Lu-F system optical materials were synthesized under control.For comparison,the sample was also synthesized by a co-precipitation method.The X-ray diffraction（XRD） results suggested that the final crystalline phases had great relations with the hydrothermal synthesis conditions.The field emission scanning electron microscopy（FE-SEM） images and the energy-dispersive spectroscopy（EDS） patterns indicated that the morphologies and the components of some representative samples also varied with the synthesis conditions.Eu³⁺,acting as a probe,exhibited different optical properties in the K-Lu-F system optical materials,which also indirectly proved the phase evolution of the final products.The results suggested that there were many crystalline phases with different symmetry in the K-Lu-F system.They would be good host matrices for the emitters.

关键词：