Luminescence Properties of BaGa2Si2O8:Eu2+, Eu3+, Pr3+ for Anticounterfeiting and Encryption

被引：0

作者：

Feng L. ^{[1
]}

Xiang L.-L. ^{[1
]}

Zhang J.-C. ^{[1
]}

机构：

[1] School of Physical Science and Technology, Lanzhou University, Lanzhou

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2020年 / 41卷 / 05期

关键词：

Anticounterfeiting; Encryption; Luminescence properties; Phosphor;

D O I：

10.3788/fgxb20204105.0510

中图分类号：

学科分类号：

摘要：

BaGa2Si2O8:Eu2+, Eu3+, Pr3+ phosphors with multi-modes luminescence were prepared by solid-state method. Meanwhile, the afterglow luminescence properties of phosphors are significantly increased by adding a proper content of Pr3+. It demonstrates that the phosphors show photoluminescence and afterglow luminescence with different colors under 254 nm or 365 nm excitation, indicating the feature of multi-mode luminescence. Meanwhile, the afterglow luminescence of the phosphors also shows different decay time. According to these luminescent features, we choose the appropriate phosphors to make a series of luminescent patterns. The typical examples demonstrate that the multi-mode luminescent characteristic of the patterns can be used in anticounterfeiting. Moreover, based on its characteristic of different afterglow decay time, we can also design the dynamically changing luminescent patterns to increase the security level of anti-counterfeiting and encryption. © 2020, Science Press. All right reserved.

引用

页码：510 / 518

页数：8

共 20 条

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