Luminescence properties of SnO2 nanoparticles dispersed in Eu3+ doped SiO2 matrix.
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.
Ningthoujam
R S
RS
Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Sudarsan
V
V
Vinu
A
A
Srinivasu
P
P
Ariga
K
K
Kulshreshtha
S K
SK
Tyagi
A K
AK