• L.Yu. Mironov
  • Dmitriy V. Marasanov
  • M.D. Sannikova
  • Yevgeniy M. Sgibnev
  • Ksenia Zyryanova
  • S.V. Puzyryova
  • Илья Евгеньевич Колесников
Series of silica-based glasses doped with La2O3, Eu2O3, and Sm2O3 was synthesized to host luminescent silver clusters formed via Na+-Ag+ ion exchange and heat treatment. Photoluminescence spectra of the glasses with Eu3+ or Sm3+ ions consist of broad white emission from silver clusters and characteristic bands of rare-earth ions. Energy transfer between silver clusters and Eu3+ or Sm3+ ions was studied by controlling luminescence quantum yield and lifetime of silver clusters. Rare-earth doping of the studied glass decreases the amount of forming silver clusters, therefore, the quenching efficiency of Eu3+ and Sm3+ ions was calculated in comparison to the glasses doped by La3+. It was shown that quantum yield of cluster luminescence decreases faster than the fluorescence and phosphorescence lifetime in the presence of Eu3+ or Sm3+ ions. Difference in quenching efficiency of luminescence quantum yield and emission lifetime of silver clusters was explained by the coexisting of two different mechanisms of quenching.
Original languageEnglish
Article number116464
JournalOptical Materials
Volume158
DOIs
StatePublished - 1 Jan 2025

ID: 127589708