Synthesis and Photoluminescent Properties of Li2SrSiO4:Pb2+


Erdogmus E., Pekgozlu I., Korkmaz E. , Basak A. S.

JOURNAL OF APPLIED SPECTROSCOPY, vol.81, no.2, pp.336-340, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81 Issue: 2
  • Publication Date: 2014
  • Doi Number: 10.1007/s10812-014-9933-6
  • Title of Journal : JOURNAL OF APPLIED SPECTROSCOPY
  • Page Numbers: pp.336-340
  • Keywords: silicate phosphors, luminescence, X-ray powder diffraction, LUMINESCENCE PROPERTIES, EMITTING PHOSPHOR, ENERGY-TRANSFER, PB2+, EU2+, IONS, CE3+

Abstract

Pure and Pb2+ doped Li2SrSiO4 materials were synthesized at 900A degrees C for 12 h in air. The phases of the synthesized materials were determined by X-ray powder diffraction (XRD). The photoluminescence properties of the synthesized phosphors were investigated by spectrofl uorometry at room temperature. The emission and excitation bands of Li2SrSiO4:Pb2+ were observed at 381 and 271 nm, respectively. The dependence of the emission intensity on Pb2+ concentration for Li(2)Sr(1-x)PbxSiO(4) was studied in detail. It was observed that the optimum concentration of Pb2+ in Li2SrSiO4 is 0.01 mol.%. The Stokes shifts of Li2SrSiO4:Pb2+ phosphor was calculated to be 10653 cm(-1).