Level for award<br> (Hons, MSc, <br> PhD)?
Apply to be<br> considered for a student <br> award (Yes / No)?
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Abstract content <br> (Max 300 words)
Lanthanide-based luminescent materials have been extensively investigated due to their contribution to a different range of applications [1, 2]. These fluoride based luminescent materials are prominent amongst other candidates because they have lesser energy losses due to non-radiative relaxation processes . Recently, the trivalent praseodymium (Pr3+) is found to be a promising ion in the lanthanide-based luminescent materials for enhancing the solar cell efficiency . In addition, the emission intensity of Pr3+ was found to be strongly dependant on the synthesizing procedures . Nano-structure fluoride of SrF2:Pr3+ was prepared by both the hydrothermal and combustion methods. X-ray diffraction patterns indicate that the samples were completely crystalized with pure face-centered cubic (space group: Fm3m). Both SrF2:Pr3+ samples exhibit green-red emission centered at 488 nm under excitation wavelength 439 nm at room temperature. The dependence of the Pr3+ emission and excitation on the sintering temperature were also investigated and the phosphorescence lifetimes for both synthetic techniques are reported.
 Bryan M. van der Ende, L. Aarts and A. Meijerink. Adv. Mater. 21, 3073, (2009).
 T. Murakami and S. Tanabe. J. Cerm. Soc. J 115 , 605, (2007).
 Bryan M. van der Ende, L. Aarts and A. Meijerink. Phys. Chem. Chem. Phys. 11, 11081, (2009).
Main supervisor (name and email)<br>and his / her institution
Dr. E Coetsee, Coetseee@ufs.ac.za (University of the Free State)