Author:Dhlamini, MS; Mhlongo, Gugu H; Swart, HC; Hillie, KTDate:Apr 2011Preparation of Er3+, Ho3+ and Tm3+ ions co-doped SiO2 nanoparticle phosphor powders by sol gelmethod is reported. The morphology and the particle size of the SiO2 hostmatrix were confirmed by field emission scanning electron microscopy (FESEM). ...Read more