Characterization of CYA:RE3+ powder and security ink for luminescent tagging of documents
The luminescent ceramic powders CaYAl<sub>3</sub>O<sup>7</sup> (CYA) with various doping concentration of Eu<sup>3+</sup> ions (0.5 – 40 at.%) were synthesized by solid state method. The phase purity, morphology as well as photoluminescence properties of the CaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>3+</sup> were investigated as a function of active ions doping. The concentration quenching effect was observed for powders doped above 30 at.% of Eu<sup>3+</sup> ions. The XRD analysis confirmed dominant content of the tetragonal CYA phase and high purity of the samples. The PLE spectra were measured in UV-VIS region and the high intense PL spectra consist of three bands with maximum peak at 702.4 nm due to <sup>7</sup>F<sub>0</sub> → <sup>5</sup>D<sub>4</sub> transition were observed. The obtained CYA:Eu<sup>3+</sup> powder was investigated for luminescent tagging application. The material was successfully incorporated into ink base and printed on security paper using screen-printing method.
Authors
- Kamila Leśniewska‐Matys (ORCID: https://orcid.org/0000-0002-1256-882X)
- Krzysztof Skupień
- J. Zawistowska
- Meldra Ķemere (ORCID: https://orcid.org/0000-0003-1791-0740)
- Anna Stępień (ORCID: https://orcid.org/0000-0002-4178-904X)
- Oskar Bogucki (ORCID: https://orcid.org/0000-0003-3258-1383)
- Anatolijs Šarakovskis (ORCID: https://orcid.org/0000-0002-2568-4758)
- Agnieszka B. Malinowska (ORCID: https://orcid.org/0000-0002-1309-8583)
- M. Romaniec (ORCID: https://orcid.org/0000-0003-3996-7705)
- Anna Kozłowska
- Monika Binkowska
- Michał Kukielski
- Aleksandra Pantoł-Boczoń
Institutions
- Łukasiewicz Research Network (PL)
- Nano Hydrophobics (United States) (US)
- University of Latvia (LV)
Publication Details
- Published
- 2025-04-04
- DOI
- https://doi.org/10.1117/12.3056457
- Primary Topic
- Handwritten Text Recognition Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00