Enhanced Light Storage of SrAl2O4 Glass-Ceramics Controlled by Selective Europium Reduction

A luminescent Eu, Dy: SrAl2O4 glass‐ceramics with high transparency in the visible region was successfully synthesized using the frozen sorbet technique with the control of O2 partial pressure (PO2) for the oxidation of Eu2+ ions. The glass‐ceramics include Eu2+, Eu3+, and Dy3+ ions, and thus exhibi...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2015-02, Vol.98 (2), p.423-429
Main Authors: Nakanishi, Takayuki, Watanabe, Kazune, Ueda, Jumpei, Fushimi, Koji, Tanabe, Setsuhisa, Hasegawa, Yasuchika
Format: Article
Language:English
Online Access:Get full text
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Summary:A luminescent Eu, Dy: SrAl2O4 glass‐ceramics with high transparency in the visible region was successfully synthesized using the frozen sorbet technique with the control of O2 partial pressure (PO2) for the oxidation of Eu2+ ions. The glass‐ceramics include Eu2+, Eu3+, and Dy3+ ions, and thus exhibits three characteristic types of emission bands, 4f–5d at around 520 nm (Eu2+ ions), 4f–4f at 610 nm (Eu3+ ions), and 480 nm (Dy3+ ions). The Eu, Dy: SrAl2O4 glass‐ceramics provide remarkable long‐persistent luminescence under dark condition. The glass‐ceramics also exhibits color‐changing luminescence in the visible region based on their remarkable light storage properties. The luminescent Eu, Dy: SrAl2O4 glass‐ceramics using the frozen sorbet technique with control of PO2 are promising materials for application in novel photonic and light storage materials.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.13312