Luminescence properties of SnO2 nanoparticles dispersed in Eu3+ doped SiO2 matrix
Date
2008
Authors
Ningthoujam, R.S.
Tyagi, A.K.
Sudarsan, V.
Vinu, A.
Srinivasu, P.
Ariga, K.
Kulshreshtha, S.K.
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Journal article
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Journal of Nanoscience and Nanotechnology, 2008; 8(3):1489-1493
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Abstract
SnO2 nanoparticles dispersed in Eu3+ doped silica (SnO2-SiO2:Eu3+) were prepared at a low temperature (185 °C) in ethylene glycol medium. Transmission electron microscopy studies on as-prepared samples have established that SnO2nanoparticles having size of 4.6 nm are uniformly covered by the SiO2matrix. Significant extent of exciton mediated energy transfer between SnO2and Eu3+ions in heat treated SnO2-SiO2:Eu3+samples has been attributed to the diffusion of Eu3+ions from the SiO2matrix to the near vicinity of SnO2nanoparticles 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.
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Copyyright 2008 American Scientific Publishers