Tailoring the Glass Composition to Increase the Thermal Stability without Impacting the Crystallization Behavior of Oxyfluorophosphate Glass

Even though the (75 NaPO3-25 CaF2) (in mol%) glass can be heat-treated into transparent glass-ceramic with Er3+ doped CaF2 crystals precipitating in volume of during heat-treatment, this was found to a poor former, limiting its use as upconverter under 975 nm pumping. In study, impact composition on thermal, optical and structural properties investigated order understand how tailored for development thermally stable glass-based material. The addition MgO, Fe2O3 Al2O3 NaPO3-CaF2 system increases thermal stability due depolymerization network. However, changes also impacted nucleation growth process. Indeed, other were newly developed glasses after heat-treatment leading glass-ceramics lower intensity upconversion than used reference. Glasses prepared different concentrations Er2O3 ErF3. These promising not only are they stable, but exhibit green red emission high pumping clustering.