27 September 2010 to 1 October 2010
CSIR Convention Centre
Africa/Johannesburg timezone

Luminescence from rare-earth doped silica prepared by the sol-gel method

Not scheduled
CSIR Convention Centre

CSIR Convention Centre

CSIR, Pretoria


Mr Hassan Seed Ahmed (University of the Free State)


Silica doped with rare-earth ions was synthesized by the sol-gel method. The resulting powders were annealed at 600 and 1000°C. X-ray diffraction spectra indicated that all samples were amorphous. Samples doped with Tb3+ exhibited the brightest luminescence, both when excited with UV light (photoluminescence) and with an electron beam (cathodoluminescence).

Primary author

Mr Hassan Seed Ahmed (University of the Free State)


Ms Mart-Mari Duvenhage (University of the Free State) Prof. Martin Ntwaeaborwa (University of the Free State)

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