Speaker
Mr
Hassan Seed Ahmed
(University of the Free State)
Description
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)
Co-authors
Ms
Mart-Mari Duvenhage
(University of the Free State)
Prof.
Martin Ntwaeaborwa
(University of the Free State)
