Investigation of spectroscopic and optical properties of Li2O-Al2O3-SiO2-TiO2 containing Cr2O3 dopant

In this study، after preparation of Li2O-Al2O3-SiO2-TiO2 base glass containing Cr2O3 dopant using casting method، the effect of different amount of dopant on spectroscopic and optical properties of glass has been investigated. Due to the spectroscopic، optical and structural properties of glasses، UV-Vis and FTIR spectrophotometers have been utilized. Hence، optical parameters such as absorption coefficient، extinction coefficient، Fermi energy level، optical band gap and Urbach energy have been calculated. According to results of calculations، augment of dopant to 1. 5% leads to the reduction of molar volume، optical band gap، Fermi energy، Urbach energy and enhancement of density. The mentioned changes could be attributed to the role of Cr3+ as the network modifier.