2019/04/30 by Maiara Mitiko Taniguchi, Edenilson da Silva, Marco Aurélio Toledo da Silva +5
Chemistry · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Cerium #Chemistry #Dopant #Doping #Glass properties and applications #Luminescence #Luminescence Properties of Advanced Materials #Materials science #Metallurgy #Mineralogy and Gemology Studies #Optoelectronics #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.jnoncrysol.2020.120307
arxiv created 2020/07/03 · openalex publication_date 2020/07/16 · arxiv updated 2020/07/20 · openalex created_date 2020/07/23 · openalex updated_date 2026/08/05
Emerging technologies are demanding innovative properties of glasses. In this work, Cerium Oxide is used as a dopant in Zinc-Tellurite samples and its effects on the properties of the glass are investigated. Thermal analysis and x-ray diffraction confirmed the amorphous nature of all samples. The bivalent nature of Cerium is investigated spectroscopically and a strong redshift induced by the dopant is attributed to charge transfers O2-→Ce4+, while the 4f-5d transition of Ce3+ could not be identified in absorption or luminescence measurements. Yellow/red (570/650 nm) emission under 405/450 nm pumping were observed and are originated from Te4+ ions, which absorbs light in the UV/blue region of the spectrum. The incorporation of some Cerium Oxide enhanced the visible luminescence, though we found no evidence that Cerium ions play some role in the radiative process. The luminescence is enhanced though due changes in the glass network induced by the dopant.