title: Synthesis, phase evolution and optical properties of Tb(3+)-doped KF-YbF3 system materials.
abstract: KF-YbF3 system materials have been synthesized by a hydrothermal method without any surfactant or template. By controlling the reactant ratios of KF:Yb(3+), the hydrothermal temperature and the pH of the prepared solutions, the final products can evolve among the orthorhombic phase of YbF3, the cubic phase of KYb3F10 and the cubic phase of KYbF4. The X-ray diffraction (XRD) patterns of the samples prove the phase evolution of the final products. The morphologies of the samples were characterized using field emission scanning electron microscopy (FE-SEM) images and the evolution of the morphology is consistent with that of the crystalline phases. The optical properties of Tb(3+) in the samples were characterized by PL excitation and emission spectra, as well as luminescent decay curves.
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, People's Republic of China.|School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, People's Republic of China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Cao
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, People's Republic of China.
authors.forename: Renping
authors.initials: R
authors.lastname: Cao
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, People's Republic of China.
authors.forename: Siling
authors.initials: S
authors.lastname: Guo
authors.affiliation: School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, People's Republic of China.
authors.forename: An
authors.initials: A
authors.lastname: Xie
authors.affiliation: Department of Physics, Pukyong National University, Busan, 608-737, South Korea.
authors.forename: Hyeon Mi
authors.initials: HM
authors.lastname: Noh
authors.affiliation: Department of Physics, Pukyong National University, Busan, 608-737, South Korea.
authors.forename: Jung Hyun
authors.initials: JH
authors.lastname: Jeong
mesh_terms: D005459:Fluorides / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D049408:Luminescent Agents / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D013696:Temperature; D013725:Terbium / Q000737:chemistry*; D014961:X-Ray Diffraction; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D049408:Luminescent Agents; D013725:Terbium; C102799:ytterbium fluoride; D015018:Ytterbium; D005459:Fluorides
keywords: optical properties; phase evolution; synthesis