Emission analysis of Sm3+ and Dy3+: Ba3Y2WO9 ceramics

A series of Sm3+ and Dy3+ ions activated Ba3Y2WO9 (BaYW) ceramics were synthesized by using a conventional solid state reaction method. Photoluminescence spectra of Sm3+ and Dy3+: BaYW ceramics have shown strong reddish-orange (596 nm) and blue (494 nm) emission. The tetragonal phase structure has been assigned to the prepared ceramics by the measurement of X-ray diffraction (XRD) profiles. Agglomeration and the nanometer particle size (130 nm to 220 nm) were observed from the SEM images of the ceramics. The functional groups like O-H, CO3, W-O bonds, Y-O bonds and the elements such as Ba, Y, W, O, Sm and Dy present in the prepared ceramics were identified by measuring the FTIR and EDAX spectra. In this contribution, we have reported the emission properties of Sm3+ and Dy3+: BaYW ceramics to explore them as novel optical materials and also reported the effect of Sm3+ and Dy3+ concentration on the luminescence behavior. Decay kinetics of the prominent emission transitions of Sm3+ and Dy3+: BaYW ceramics are also discussed. (c) 2012 Elsevier B.V. All rights reserved.