Synthesis and emission analysis of RE3+ (Eu3+ or Dy3+):Li2TiO3 ceramics

The development and photoluminescence analysis of Eu3+ or Dy3+ ions in the matrix of lithium titanate (Li2TiO3) ceramics by using a solid state reaction method are reported. Emission spectra of Eu3+:Li2TiO3 ceramics have shown strong red emission at 611 nm (D-5(0) -> F-7(2)) with lambda(exci) = 392 nm (F-7(0) -> L-5(6)) and from the Dy3+:Li2TiO3, a blue emission at 493 nm (F-4(9/2) -> H-6(15/2)) and also an yellow emission at 582 nm (F-4(9/2) -> H-6(13/2)) have been observed with lambda(exci) = 366 nm (H-6(15/2) -> P-6(5/2)). Both the rare-earth ions containing ceramics have displayed their brighter emission performance from their measured spectral results. In addition, X-ray diffraction (XRD), Fourier transform infra red (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX) have been used to characterize the structural properties of (Eu3+ or Dy3+):Li2TiO3 ceramics. (C) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.