Fabrication and characterization of CeO2-doped glasses and nano-glass–ceramics for UV protection sunglasses

Enhanced optical and electrical properties of narrow-bandgap cerium borate glasses and nanostructured glass-ceramics: influence of V2O5-incorporation

“…The as-fabricated glasses were heat-treated for four hour at 500 °C to promote crystals in the glass network. Such annealing temperature is chosen to be between the glass transition temperature and the crystallization temperature, based on the reported thermal analysis of cerium borate glasses [17][18][19]. To monitor the structural changes in the glasses due to the application of heat treatment process, x-ray diffraction analysis was carried out in the 2θ range from 10 to 80 degree using BRUKER D8 ADVANCE diffractometer.…”

“…It is observed that the UV cut-off increases from 382.7 nm to 483.9 nm by increasing V 2 O 5 content. It concluded that the glasses with lower V 2 O 5 content are strongly beneficial for fabrication of UV protection Sunglasses [17]. The UV protection requires a material, which hinders the UV wavelengths (up to 400 nm) and permits the visible wavelengths.…”

“…The small size of the crystalline grains (nanoscale) promotes the volumetric contribution of the grain boundaries which has deleterious effect on the conductivity [39]. Generally, the transformation of glasses to glass-ceramics can either enhance the conductivity [37] or decline it [17], depending on the chemical composition and the microstructure characteristics such as porosity and grain boundary.…”