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Abstract:
With the increasing demand for temperature sensing and fluorescent anti-counterfeiting applications, there is an urgent need to develop new environmentally friendly materials with multi-peak fluorescence and high stability. In this study, Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals (MCs) are successfully synthesized via a simple “dissolve-dry” method. The fluorescence intensity ratio technique is employed to assess the temperature sensing performance of these samples, achieving maximum relative sensitivity are 3.27 %/K (up-conversion) and 1.23 %/K (down-conversion), respectively. Because these MCs presents yellow or green emission colors under different excitation, we design an advanced anti-counterfeiting pattern based on the MCs, which greatly improving the security of anti-counterfeiting. The above results show that the sample is dual-mode temperature sensing materials with high sensitivity. In addition, it has great application prospects in dual-mode fluorescent anti-counterfeiting. © 2025 Elsevier B.V.
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Journal of Luminescence
ISSN: 0022-2313
Year: 2025
Volume: 284
3 . 3 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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