Synthesis, phase evolution and optical properties of Tb(3+)-doped KF-YbF3 system materials

Luminescence. 2015 Aug;30(5):637-42. doi: 10.1002/bio.2798. Epub 2014 Oct 21.

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.

Keywords: optical properties; phase evolution; synthesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Fluorides / chemistry*
  • Hydrogen-Ion Concentration
  • Luminescent Agents / chemistry*
  • Microscopy, Electron, Scanning
  • Temperature
  • Terbium / chemistry*
  • X-Ray Diffraction
  • Ytterbium / chemistry*

Substances

  • Luminescent Agents
  • Terbium
  • ytterbium fluoride
  • Ytterbium
  • Fluorides