Speaker
Dr
Bakang Moses Mothudi
(University of South Africa)
Abstract content <br> (Max 300 words)
Ba1-xMgxAl2O4:Eu2+,Dy3+ phosphors prepared by combustion method at an initiating combustion temperature of 600 °C. The X-ray diffraction patterns of different compositions of the as-prepared were observed and the intensity of the peaks improved significantly after annealing the samples in air for 3 hours at 1000 °C. The SEM images of the samples with compositions x = 0.0 and 1.0 show the spherical nanoparticles of almost pure BaAl2O4 and MgAl2O4 respectively. The broad emission spectra shown by most of the samples can be attributed to the typical 4f65d1 -4f7 transition of the Eu2+ ions. The variable peak positions shown in most of the phosphors can be attributed to different composition of Mg (x= 0.0 - 1.0).
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Primary author
Dr
Bakang Moses Mothudi
(University of South Africa)
Co-authors
Prof.
H C Swart
(University of the Free State)
Prof.
Martin Ntwaeaborwa
(University of the Free State)
Dr
Simon Dhlamini
(University of South Africa)
