Violet emission of Ce doped sol–gel Al2O3–SiO2 glasses without any deoxidizing heat-treatment

Ce doped sol–gel SiO2, Al2O3–SiO2 glasses have been fabricated by heat-treatment in air atmosphere and their photoluminescence properties have been studied. A characteristic violet emission from Ce3+ is observed in Ce doped sol–gel Al2O3–SiO2 glasses. The results show that characteristic Ce3+ emission can be obtained by incorporating Al3+ into sol–gel SiO2 glasses without any deoxidizing heat-treatment.