Abstract
Silica xerogels containing Sm3+ions and SnO2nanocrystals were prepared in a sol–gel process. The image of transmission electron microscopy (TEM) shows that the SnO2nanocrystals are dispersed in the silica matrix. The X-ray diffraction (XRD) of the sample confirms the tetragonal phase of SnO2. The xerogels containing SnO2nanocrystals and Sm3+ions display the characteristic emission of Sm3+ions (4G5/2 → 6H J (J = 5/2, 7/2, 9/2)) at the excitation of 335 nm which energy corresponds to the energy gap of the SnO2nanocrystals, while no emission of Sm3+ions can be observed for the samples containing Sm3+ions. The enhancement of the Sm3+emission is probably due to the energy transfer from SnO2nanocrystals to Sm3+ions.
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Mu, J., Liu, L. & Kang, SZ. Enhancement of Sm3+emission by SnO2nanocrystals in the silica matrix. Nanoscale Res Lett 2, 100 (2007). https://doi.org/10.1007/s11671-006-9037-1
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DOI: https://doi.org/10.1007/s11671-006-9037-1