Now showing items 1-2 of 2
Upconversion of infrared to visible light in rare-earths doped phosphate phosphors for photodynamic therapy application
(University of the Free State, 2017-06)
Phosphate phosphors have emerged as an important family of luminescent material due to their low sintering temperature, broad band gaps, high thermal and chemical stability, and moderate phonon energies. Their structure ...
Narrowband Ultraviolet B emission from gadolinium and praseodymium co-activated calcium phosphate phosphors for phototherapy lamps
(University of the Free State, 2014-01)
Different phases of calcium phosphates co-doped with gadolinium and praseodymium were prepared by co-precipitation, urea combustion, citrate-gel combustion and microwave-assisted methods. Ca5(PO4)3OH:Gd3+,Pr3+ phosphors ...