Synthesis and characterization of Ho3+ and Ho3+: Yb3+ embedded silica–titania nanocomposites: structural and optical properties, Conference paper

Abstract

Ho 3+ : Yb 3+ ions doped highly transparent SiO2-TiO2 nano-composite were successfully fabricated in the forms of monolith and thin films. the preparations were carried out via a modified sol-gel method at different annealing temperatures ranging from 500 o C up to 1000 o C for 3h. The structural and optical properties were determined by XRD, FESEM, 3D laser Raman and FTIR spectroscopy. The thickness of the thin film sample doped with 0.4 mol % of Ho 3+ ions and co-doped with 0.5mol % of Yb 3+ was measured 1.3 m using the cross-section Field emission scanning electron microscopy (FESEM) technique. These results suggest that the Ho 3+ : Yb 3+ silica-titania are promising candidates for photonic devices.