title: Optical properties of cerium doped oxyfluoroborate glass.
abstract: Cerium doped oxyfluoroborate glasses have been prepared and its spectroscopic properties have been discussed. It is found that the absorption edge shifts towards the lower energy side for the higher concentration of cerium dopant. Optical band gap for these glasses have been calculated and it is found that the number of non-bridging oxygen increases with cerium content. The emission spectra of these glasses have been recorded using UV laser radiations (266 and 355 nm) and it is observed that these glasses show bright blue emission. On the basis of excitation and emission spectra we have reported the existence of at least two different emission centers of Ce(3+)ions.
authors.affiliation: Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221 005, UP, India.
authors.forename: A
authors.initials: A
authors.lastname: Bahadur
authors.forename: Y
authors.initials: Y
authors.lastname: Dwivedi
authors.forename: S B
authors.initials: SB
authors.lastname: Rai
mesh_terms: D001881:Borates / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D002563:Cerium / Q000737:chemistry*; D017611:Fluorine Compounds / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D017601:Oxygen Compounds / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001881:Borates; D002412:Cations; D017611:Fluorine Compounds; D017601:Oxygen Compounds; D002563:Cerium