Lin FENG, Lei-lei XIANG, Jia-chi ZHANG. Luminescence Properties of BaGa2Si2O8:Eu2+, Eu3+, Pr3+ for Anticounterfeiting and Encryption. [J]. Chinese Journal of Luminescence 41(5):510-518(2020)
DOI:
Lin FENG, Lei-lei XIANG, Jia-chi ZHANG. Luminescence Properties of BaGa2Si2O8:Eu2+, Eu3+, Pr3+ for Anticounterfeiting and Encryption. [J]. Chinese Journal of Luminescence 41(5):510-518(2020) DOI: 10.3788/fgxb20204105.0510.
Luminescence Properties of BaGa2Si2O8:Eu2+, Eu3+, Pr3+ for Anticounterfeiting and Encryption
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 Pr
3+
. 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.
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