Synthesis and investigation of luminescence properties of Eu3+-doped cubic perovskite Ba3Y2WO9
Abstract
Eu3+-doped cubic double perovskite Ba3Y2WO9 phosphors have been firstly successfully synthesized by sol-gel method. The prepared samples were characterized by X-ray diffraction (XRD) and field emission-scanning electron microscopy (FE-SEM). The luminescence excitation and emission spectra in the ultraviolet-visible (UV) region were used to investigate the luminescence properties of these phosphors. Then the site-selective excitation and emission spectroscopy along with luminescence decay have been investigated in the 5D0 → 7F0 region under a pulsed, tunable, narrowband dye laser at room temperature. In our study, the crystallographic occupations of Eu3+ ions were explored based on both spectroscopy and crystal structure of cubic Ba3Y2WO9:Eu3+. The multiple site structure of Eu3+ ions with highly disordered distributions in cubic Ba3Y2WO9 lattices was suggested. The results help us to understand the site assignments of rare earth ions doped in cubic Ba3Y2WO9.
- Publication:
-
Optical Materials
- Pub Date:
- June 2013
- DOI:
- 10.1016/j.optmat.2013.04.008
- Bibcode:
- 2013OptMa..35.1577D