Enhanced optical functionalities in silica by doping with Au‐based nanostructures. Issue 1 (21st November 2014) - Cesca, Tiziana
Abstract The sensitization mechanism of Er3+ ions by sub‐nanometric AuN aggregates formed in silica by sequential ion implantation has been investigated by room temperature photoluminescence characterizations. Er–Au co‐implanted samples with different Au and Er relative concentrations have been studied. The results allowed to point out a correlation between the luminescence properties of the molecule‐like AuN nanoclusters and the Er sensitization effect and to definitely prove the short‐range nature of the energy‐transfer process. Efficient sensitization of the Er3+ luminescence in silica is obtained by energy‐transfer from ultra‐small AuN nanoclusters.