Author:Dhlamini, MS; Mhlongo, Gugu H; Swart, HC; Ntwaeaborwa, OW; Hillie, KTDate:May 2012Cathodoluminescence (CL) properties of SiO2 powders activated with thulium
(Tm3+) and holmium (Ho3+) ions prepared by a sol–gel process were
investigated. Different molar concentrations of Tm3+ co-doped with Ho3+ were
studied. The 460 nm ...Read more