title: Luminescence properties of SnO2 nanoparticles dispersed in Eu3+ doped SiO2 matrix.
abstract: SnO2 nanoparticles dispersed in Eu3+ doped silica (SnO2-SiO2:Eu3+) were prepared at a low temperature (185 degrees C) in ethylene glycol medium. Transmission electron microscopy studies on as-prepared samples have established that SnO2 nanoparticles having size of 4.6 nm are uniformly covered by the SiO2 matrix. Significant extent of exciton mediated energy transfer between SnO2 and Eu3+ ions in heat treated SnO2-SiO2:Eu3+ samples has been attributed to the diffusion of Eu3+ ions from the SiO2 matrix to the near vicinity of SnO2 nanoparticles and its incorporation in the SnO2 matrix. On the other hand, very weak energy transfer exists for SnO2:Eu3+ nanoparticles heated at different temperatures due to the phase segregation of Eu3+ ions from the matrix.
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: R S
authors.initials: RS
authors.lastname: Ningthoujam
authors.forename: V
authors.initials: V
authors.lastname: Sudarsan
authors.forename: A
authors.initials: A
authors.lastname: Vinu
authors.forename: P
authors.initials: P
authors.lastname: Srinivasu
authors.forename: K
authors.initials: K
authors.lastname: Ariga
authors.forename: S K
authors.initials: SK
authors.lastname: Kulshreshtha
authors.forename: A K
authors.initials: AK
authors.lastname: Tyagi