Eu^3+doped TiO2 anatase spheres were obtained by modified sol-gel approach.Spheres(110-250 nm)are composed of smaller(5-15 nm)nanocrystals and exhibit red emission under UV light excitation.Materials were synthesized ...Eu^3+doped TiO2 anatase spheres were obtained by modified sol-gel approach.Spheres(110-250 nm)are composed of smaller(5-15 nm)nanocrystals and exhibit red emission under UV light excitation.Materials were synthesized by multi-step method from glycolated titania alkoxides.Europium doped(1.0 mol%)and non-doped spheres were synthesized.Their optical and structural properties were compared by materials characterization methods,such as X-ray powder diffraction,transmission electron microscopy and PL spectroscopy.Doped TiO2 spheres are crystalline phase pure and exhibit high luminescence intensity.展开更多
文摘Eu^3+doped TiO2 anatase spheres were obtained by modified sol-gel approach.Spheres(110-250 nm)are composed of smaller(5-15 nm)nanocrystals and exhibit red emission under UV light excitation.Materials were synthesized by multi-step method from glycolated titania alkoxides.Europium doped(1.0 mol%)and non-doped spheres were synthesized.Their optical and structural properties were compared by materials characterization methods,such as X-ray powder diffraction,transmission electron microscopy and PL spectroscopy.Doped TiO2 spheres are crystalline phase pure and exhibit high luminescence intensity.
