Open AccessImpact of bridging oxygens formation on optical properties of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 glasses
Author(s) -
A. Faeghinia
Publication year - 2022
Publication title -
synthesis and sintering
Language(s) - English
Resource type - Journals
eISSN - 2564-0194
pISSN - 2564-0186
DOI - 10.53063/synsint.2022.2179
Subject(s) - doping , microstructure , absorption spectroscopy , ion , materials science , spectroscopy , bridging (networking) , absorption (acoustics) , analytical chemistry (journal) , band gap , chemistry , optics , optoelectronics , physics , composite material , computer network , organic chemistry , chromatography , quantum mechanics , computer science
In this study, the structural chemistry of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 (LAST) glasses has been analyzed utilizing UV-Vis spectroscopy. Optical parameters like absorption and extinction coefficients, indirect and direct optical band gaps, Urbach energy as well as Fermi energy level of samples were estimated via their absorption spectra. Then, it was tried to make a relationship between the variation of mentioned parameters and structural chemistry of different doped samples. Results of the investigation illustrated that even a little change in the microstructure of glassy samples has an effect on optical parameters and accordingly it could be sensible. Furthermore, it was revealed that Fe3+ ions have the role of network forming in the structure of glass by increasing the formation of bridging oxygens (BOs) in the matrix.