Thermal, chemical, optical properties and structure of Er3+-doped and Er3+/Yb3+-codoped P2O5―Al2O3-ZnO glasses

This study was explored in series of the optical, thermal, and structure properties based on 60P2O5-10Al2O3-30ZnO (PAZ) glasses system that doped with varied rare-earth (RE) elements Yb2O3/Er2O3. The glass transition temperature, softening temperature and chemical durability were increased with RE-doping concentrations increasing, whereas thermal expansion coefficient was decreased. In the optical properties, the absorption and emission intensities also increase with RE-doping concentrations increasing, When Er2O3 and Yb2O3 concentrations are over than 3mol% in the Er3+-doped PAZ system and Yb3+-doped concentration is over than 3mol% for Er3+/Yb3+-codoped PAZ system, the emission intensity significantly decreases presumably due to concentration quenching, formation of the ions clustering, and OHa degree groups in the glasses network. It is suggested that the maximum emission cross-section (Ief e ) is 7.64A-10a degree 21 cm2 at 1535nm is observed for 3mol% Er3+-doped PAZ glasses. Moreover, the maximum Ief e A-full-width-at-half-maximum is 327.8 for 5mol% Er3+-doped PAZ glasses. a-[ordm This study for the optical, thermal, and structure properties based on 60P2O5-10 Al2O3-30 ZnO (PAZ) glasses system that doped with varied rare earth elements Yb2O3/ Er2O3. a-[ordm The glass transition temperature, softening temperature and chemical durability were increase with RE-doping concentrations increasing, whereas thermal expansion coefficient was decreases. a-[ordm The absorption and emission intensities increase with RE-doping concentrations increasing, when Er2O3 and Yb2O3 are over than 3 mole% in the Er3+-doped PAZ system and Yb3+-doped over 3 mole% for Er3+/Yb3+-codoped PAZ system.