Luminescence based on energy transfer in silica doped with lanthanide titania (Gd2Ti2O7:Ln3+) [Ln3+ = Eu3+ or Dy3+]
作者： M. Saif
DOI: 10.1016/J.JPHOTOCHEM.2009.04.020
关键词:
摘要: Abstract Gadolinium titanate doped with lanthanide metal ions (Gd2Ti2O7:Eu3+ or Dy3+) and embedded in silica matrix is prepared by sol–gel process. TG/DSC, IR, Raman spectroscopy TEM have been used to investigate thermal, structural optical properties of xerogels annealed at 1100 °C. The photoluminescence (PL) spectra showed the characteristic emission bands Eu3+ Dy3+ host matrix. A significant increase PL lifetime observed nanocomposite relative pure europium-doped gadolinium nanoparticles same dopant concentration. effects ion concentration thermal treatment on luminescence Ln3+ are investigated.
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