Manipulation of Lanthanoid Luminescence in Silicates
Date
2023-06
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Publisher
New York State College of Ceramics at Alfred University. Inamori School of Engineering.
Abstract
The luminescent properties of several lanthanoid ions were examined when doped into silicate glasses. Moreover, the effect of visible colorants, common in the world of glass art, on said luminescence was studied. Several potential applications are described, including aesthetic uses in the realms of art and industry. Luminescent microsphere production as an add-value sink for waste glass is detailed and a novel process was developed to incorporate persistent luminescent material into waste glass and other 'previously melted' glasses via a 'sinter-esque' fusion method with promising results. A glass with a unique dopant combination was developed to showcase a visible color contrasted with a UV-induced luminescent color. Glass medallions utilizing this composition were manufactured for use in the podium medals of the 2023 FISU World University Games Winter. Additionally, a specific case study was investigated regarding one of the lanthanoid-transition metal codopant compositions. The combination of cerium and manganese ions in silicate glass composition exhibits a novel optical effect: luminescent opacity. Under visible light illumination, this composition appears transparent purple; similar to other silicates containing the Mn3+ ion. As with other silicates doped with Ce3+ and Mn2+ ions, this composition also luminesces visible light under ultraviolet light. Unlike similar compositions, under said ultraviolet light the glass acquires a turbidity not seen under visible light. when the ultraviolet source is removed, the glass returns to a transparent purple rather than maintaining its opacity.
Description
Thesis completed in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Glass Science at the Inamori School of Engineering, New York State College of Ceramics at Alfred University
Type
Thesis
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Keywords
Glass, Luminescence