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 (5D0 → 7F2) with λexci = 392 nm (7F0 → 5L6) and from the Dy3+:Li2TiO3, a blue emission at 493 nm (4F9/2 → 6H15/2) and also an yellow emission at 582 nm (4F9/2 → 6H13/2) have been observed with λexci = 366 nm (6H15/2 → 6P5/2). 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.