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Crystals
Volume 15
Issue 5
10.3390/cryst15050474
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Тailoring the Luminescence Properties of Strontium Aluminate Phosphors for Unique Smartphone Detectable Optical Tags

by
Virginija Vitola
1,
Milena Dile
1,
Katrina Krizmane
1,
Ernests Einbergs
1,
Tinko Eftimov
2,3,*,
Kristian Nikolov
3 and
Samia Fouzar
3,4
1
Institute of Solid State Physics, University of Latvia, Ķengaraga Iela 8, Latgales Priekšpilsēta, LV-1063 Rīga, Latvia
2
Centre de Recherche en Photonique, Université du Québec en Outaouais, 101 Rue St-Jean Bosco, Gatineau, QC J8Y 3G5, Canada
3
Central Laboratory for Applied Physics, BAS, 61 Blvd Sanct Peterburg, 4000 Plovdiv, Bulgaria
4
Centre de Développement des Technologies Avancées CDTA, Baba Hassen, Algiers 16303, Algeria
*
Author to whom correspondence should be addressed.
Crystals 2025, 15(5), 474; https://doi.org/10.3390/cryst15050474 (registering DOI)
Submission received: 14 April 2025 / Revised: 6 May 2025 / Accepted: 6 May 2025 / Published: 17 May 2025
(This article belongs to the Section Polycrystalline Ceramics)
Versions Notes

Abstract

In this work, a precursor-driven tailoring of strontium aluminate phosphors doped with Eu2+ and Dy3+ to generate unique, batch-specific luminescent signatures suitable for smartphone-detectable anti-counterfeiting tags was developed. A microwave-assisted hydrothermal synthesis approach was employed to explore the impact of a wide range of alkaline hydroxide and carbonate precursors on the structure of strontium aluminate. The resulting materials exhibited distinct differences in crystalline phase composition, morphology, and trap depth distribution. A smartphone-based detection system was developed, enabling rapid identification of spectral fingerprints. This study demonstrates a viable strategy for embedding unique luminescent identifiers, offering a scalable solution for robust, low-cost anti-counterfeiting applications in both the spectral and the time domain.
Keywords: persistent luminescence; precursor-driven tailoring; anti-counterfeiting tags persistent luminescence; precursor-driven tailoring; anti-counterfeiting tags

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MDPI and ACS Style

Vitola, V.; Dile, M.; Krizmane, K.; Einbergs, E.; Eftimov, T.; Nikolov, K.; Fouzar, S. Тailoring the Luminescence Properties of Strontium Aluminate Phosphors for Unique Smartphone Detectable Optical Tags. Crystals 2025, 15, 474. https://doi.org/10.3390/cryst15050474

AMA Style

Vitola V, Dile M, Krizmane K, Einbergs E, Eftimov T, Nikolov K, Fouzar S. Тailoring the Luminescence Properties of Strontium Aluminate Phosphors for Unique Smartphone Detectable Optical Tags. Crystals. 2025; 15(5):474. https://doi.org/10.3390/cryst15050474

Chicago/Turabian Style

Vitola, Virginija, Milena Dile, Katrina Krizmane, Ernests Einbergs, Tinko Eftimov, Kristian Nikolov, and Samia Fouzar. 2025. "Тailoring the Luminescence Properties of Strontium Aluminate Phosphors for Unique Smartphone Detectable Optical Tags" Crystals 15, no. 5: 474. https://doi.org/10.3390/cryst15050474

APA Style

Vitola, V., Dile, M., Krizmane, K., Einbergs, E., Eftimov, T., Nikolov, K., & Fouzar, S. (2025). Тailoring the Luminescence Properties of Strontium Aluminate Phosphors for Unique Smartphone Detectable Optical Tags. Crystals, 15(5), 474. https://doi.org/10.3390/cryst15050474

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