Sol-gel synthesis, structural and luminescence properties of MT-doped SiO2/Zn2SiO4 nanocomposites

Journal ar
Optical Materials
  • Volumen: 36
  • Número: 6
  • Fecha: 01 abril 2014
  • Páginas: 1034-1039
  • ISSN: 09253467
  • Tipo de fuente: Revista
  • DOI: 10.1016/j.optmat.2014.01.019
  • Tipo de documento: Artículo
The sol-gel method is used for the preparation of undoped, Mn and V-doped Zn2SiO4 particles embedded in SiO2 host matrix. The phase purity and morphological features were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) investigations. The obtained SiO2/Zn2SiO4 nanocomposite, exhibits a strong photoluminescence (PL) band centered at around 760 nm, attributed to energy transfer occurs from Zn2SiO4 particles to NBOHs interfaces defects. In addition, the PL spectrum for the SiO2/Zn 2SiO4:Mn nanocomposite showed that a dominant peak at 525 nm appeared, which originated from the 4T1- 6A1 transitions of Mn2+ ions. In the case of SiO2/Zn2SiO4:V, the PL reveals a band centered at about 540 nm attributed to the effect of the V5+ in the host matrix nanocomposite. © Published by Elsevier B.V.

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