Persistent luminescence of Eu2+ and Dy3+ doped barium aluminate (BaAl2O4:Eu2+,Dy3+) materials

  • Stefani R
  • Rodrigues L
  • Carvalho C
 et al. 
  • 34


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


Polycrystalline Eu2+ and Dy3+ doped barium aluminate materials, BaAl2O4:Eu2+,Dy3+, were prepared with solid state reactions at temperatures between 700 and 1500 ??C. The influence of the thermal treatments on the stability, homogeneity and structure as well as to the UV-excited and persistent luminescence of the materials was investigated by X-ray powder diffraction, SEM imaging and infrared spectroscopies as well as by steady state luminescence spectroscopy and persistent luminescence decay curves, respectively. The IR spectra of the materials prepared at 250, 700, and 1500 ??C follow the formation of BaAl2O4 composition whereas the X-ray powder diffraction of compounds revealed how the hexagonal structure was obtained. The morphology of the materials at high temperatures indicated important aggregation due to sintering. The luminescence decay of the quite narrow Eu2+ band at ca. 500 nm shows the presence of persistent luminescence after UV irradiation. The dopant (Eu2+) and co-dopant (Dy3+) concentrations affect the crystallinity and luminescence properties of the materials. ?? 2009 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Barium aluminate
  • Dysprosium
  • Europium
  • Persistent luminescence
  • Phosphors

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • R. Stefani

  • L.C.V. Rodrigues

  • C.A.A. Carvalho

  • M.C.F.C. Felinto

  • H.F. Brito

  • M. Lastusaari

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free