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Enhanced optical functionalities in silica by doping with Au‐based nanostructures
Author(s) -
Cesca Tiziana,
Kalinic Boris,
Maurizio Chiara,
Scian Carlo,
Battaglin Giancarlo,
Mazzoldi Paolo,
Mattei Giovanni
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201400106
Subject(s) - nanoclusters , photoluminescence , luminescence , sensitization , materials science , energy transfer , nanostructure , doping , ion , nanotechnology , molecule , chemical engineering , chemistry , chemical physics , optoelectronics , organic chemistry , engineering , immunology , biology
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.