Achieving Multimodal Emission in Zn4B6O13:Tb3+,Yb3+ for Information Encryption and Anti-counterfeiting

With the rapid development of technology, information security has always been considered a major challenge. In this work, the excellent combination of persistent luminescence, photoluminescence, up-conversion luminescence, and thermo-luminescence in a particular material Zn4B6O13:Tb3+,Yb3+ synthesi...

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Veröffentlicht in:Inorganic chemistry 2020-11, Vol.59 (21), p.15681-15689
Hauptverfasser: Zhao, Shanshan, Wang, Zhenbin, Ma, Zhidong, Fan, Feiyue, Liu, Weisheng
Format: Artikel
Sprache:eng
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Zusammenfassung:With the rapid development of technology, information security has always been considered a major challenge. In this work, the excellent combination of persistent luminescence, photoluminescence, up-conversion luminescence, and thermo-luminescence in a particular material Zn4B6O13:Tb3+,Yb3+ synthesized via a solid-state reaction is reported, which can be used for the information encryption and anti-counterfeiting. Tb3+ ions were chosen as the emitting centers for multimodal emissions, and Yb3+ codoping can be used as electron traps and sensitizer to adjust trap distribution and efficient up-conversion luminescence in rare-earth-doped luminescent materials. Besides, the as-prepared luminescent materials exhibit high thermal stability and excellent water resistance. On the basis of these properties, the samples were used to print luminescent images through a screen printing process on the film and banknote. The luminescent image in a film is showing different patterns and on a banknote is showing green emissions under different stimulations. These multimodal emissions demonstrate that the as-prepared sample is suitable for advanced information encryption and anti-counterfeiting.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.0c02019