화학공학소재연구정보센터
Chemical Physics Letters, Vol.648, 8-12, 2016
Solid state synthesis and tunable luminescence of Li2SrSiO4:Eu2+/Ce3+ phosphors
Li2SrSiO4:Eu2+/Ce3+ phosphors have been synthesized by solid state reaction. Eu2+ and/or Ce3+ doped Li2SrSiO4 have the hexagonal crystal structure, indicating the doped Eu2+ and/or Ce3+ ions have no influence on the crystal structure of Li2SrSiO4. Under the excitation at 365 nm, Eu2+ or Ce3+ doped Li2SrSiO4 phosphors give characteristic emission bands of Eu2+ or Ce3+, respectively. For Li2SrSiO4:Eu2+/Ce3+ phosphors with the fixed Ce3+ concentration, two emission bands originating from Eu2+ and Ce3+ can be observed. On the basis of luminescent properties of Li2SrSiO4:Eu2+/Ce3+ phosphors, we can conclude that energy transfer from Ce3+ to Eu2+ occurs in Li2SrSiO4. (C) 2016 Elsevier B.V. All rights reserved.