Optical anti-counterfeiting based on Cu+ and Sb3+ co-doped Cs2ZnCl4 single crystals

Meng Wang; Chuan Yin

doi:10.1117/12.3052643

18 November 2024 Optical anti-counterfeiting based on Cu⁺ and Sb³⁺ co-doped Cs₂ZnCl₄ single crystals

Meng Wang, Chuan Yin

Proceedings Volume 13417, International Conference on Precision Instruments and Optical Engineering (PIOE 2024); 134170K (2024) https://doi.org/10.1117/12.3052643
Event: 4th International Conference on Precision Instruments and Optical Engineering (PIOE 2024), 2024, Kuala Lumpur, Malaysia

Abstract

The transmission and protection of confidential information play an extremely important role in the field of information security. In the military field, optical anti-counterfeiting technology is widely used in aviation equipment, military communication, military reconnaissance, and so on. At present, simple optical anti-counterfeiting no longer meets current anti-counterfeiting needs. Therefore, it’s necessary to develop multimodal, stable and low toxicity luminescent materials to meet higher levels of anti-counterfeiting needs. In this paper, Cu⁺ and Sb³⁺ were co-doped to Cs2ZnCl4 single crystals, which exhibited white and red emission under 254- and 365-nm UV excitation, respectively. Based on the multi exciton emission characteristics of Cu⁺ and Sb³⁺ co-doped Cs₂ZnCl₄ single crystals, a digital encrypted information transmission system was designed, achieving dual anti-counterfeiting. This provides a feasible solution for the development of new metal halides for optical anti-counterfeiting applications

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Meng Wang and Chuan Yin "Optical anti-counterfeiting based on Cu⁺ and Sb³⁺ co-doped Cs₂ZnCl₄ single crystals", Proc. SPIE 13417, International Conference on Precision Instruments and Optical Engineering (PIOE 2024), 134170K (18 November 2024); https://doi.org/10.1117/12.3052643

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KEYWORDS

Cesium

Antimony

Copper

Crystals

Ultraviolet radiation

Luminescence

Data transmission

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