Speaker
Ms
Roz Madihlaba
(University of the Western Cape)
Description
Recently, great efforts have been made to develop efficient phosphor systems. Among these, a number of works have been carried out on investigations of the luminescent properties for borates, aluminates and gannets [1, 2]. Since the first white light emitting diodes(W-LED’s) became commercially available, it have attracted great attention for their obvious advantages such as long lifetime, high luminescence efficiency, low power consumption and environmental friendliness, consequently they are expected to replace incandescent and fluorescent lamps for general lighting application in the future. Good glass host is very important for efficient luminescence of rare-earth ions. Borate glass is a suitable optical material with high transparency, low melting point, high thermal stability and good rare-earth ions solubility. Among them, La2Sr3(BO3)4, is one of the best candidates for the desired host materials of phosphors, and La2Sr3(BO3)4:xTb3+, as a green phosphor could be possible used extensively in future in plasma display panels. Tb3+ -doped phosphors are considered more important due to their efficiency in the display of sharp and intense green emission at 544 nm due to an electronic transition of 5D4-7F5. In this paper, we report combustion synthesis of some important, borate based, PL phosphors using commonly available fuels and oxidizers.
Are you currently a postgraduate student? (Yes/No)
Yes
At what level of studies are you currently? (Hons/MSc/PhD)
MSc
Please provide the name and email address of your supervisor.
Prof M O Onani email:monani@uwc.ac.za
Primary author
Ms
Roz Madihlaba
(University of the Western Cape)
Co-authors
Mr
D Mlotswa
(University of Free State)
Prof.
Francis Dejene
(University of the Free State)
Dr
L.F. Koao
(University of the Free State)
Prof.
Martin Onani
(University of the Western Cape)
