title: Ce(3+) /Tb(3+) non-/single-/co-doped K-Lu-F materials: synthesis, optical properties, and energy transfer.
abstract: Using a hydrothermal method, Ce(3+) /Tb(3+) non-/single-/co-doped K-Lu-F materials have been synthesized. The X-ray diffraction (XRD) results suggest that the Ce(3+) and/or Tb(3+) doping had great effects on the crystalline phases of the final samples. The field emission scanning electron microscopy (FE-SEM) images indicated that the samples were in hexagonal disk or polyhedron morphologies in addition to some nanoparticles, which also indicated that the doping also had great effects on the sizes and the morphologies of the samples. The energy-dispersive spectroscopy (EDS) patterns illustrated the constituents of different samples. The enhanced emissions of Tb(3+) were observed in the Ce(3+) /Tb(3+) co-doped K-Lu-F materials. The energy transfer (ET) efficiency ηT were calculated based on the fluorescence yield. The ET mechanism from Ce(3+) to Tb(3+) was confirmed to be the dipole-quadrupole interaction inferred from the theoretical analysis and the experimental data. Copyright © 2015 John Wiley & Sons, Ltd.
authors.affiliation: School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, China.|College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Cao
authors.affiliation: School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, 361024, China.
authors.forename: An
authors.initials: A
authors.lastname: Xie
authors.affiliation: Department of Physics, Pukyong National University, Busan, 608-737, Korea.
authors.forename: Hyeon Mi
authors.initials: HM
authors.lastname: Noh
authors.affiliation: Department of Physics, Pukyong National University, Busan, 608-737, Korea.
authors.forename: Jung Hyun
authors.initials: JH
authors.lastname: Jeong
mesh_terms: D002563:Cerium / Q000737:chemistry*; D004735:Energy Transfer; D005461:Fluorine / Q000737:chemistry*; D008187:Lutetium / Q000737:chemistry*; D055620:Optical Phenomena; D011188:Potassium / Q000737:chemistry*; D013725:Terbium / Q000737:chemistry*
chemical_list: D013725:Terbium; D005461:Fluorine; D002563:Cerium; D008187:Lutetium; D011188:Potassium
keywords: energy transfer; hydrothermal synthesis; optical properties