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Lanthanide-Doped Cs2ZrCl6 Perovskite Nanocrystals for Multimode Anti-Counterfeiting Application.

Longbin You1, Qixin Wang1, Yuting Liao1

  • 1College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China.

Nanomaterials (Basel, Switzerland)
|January 9, 2026
PubMed
Summary

Researchers developed new nanocrystals for advanced anti-counterfeiting. These materials offer superior forgery resistance by changing luminescence based on excitation wavelength, enabling multi-mode security labels.

Keywords:
Cs2ZrCl6 nanocrystalsanti-counterfeitinglanthanide-doped perovskitemultimode emission

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photonic Security

Background:

  • Traditional luminescent materials are easily counterfeited due to static emission.
  • Advanced anti-counterfeiting technologies are needed to combat rising forgery.
  • Multimode luminescent materials offer enhanced security through excitation-dependent emission.

Purpose of the Study:

  • To synthesize novel lanthanide-doped Cs2ZrCl6 nanocrystals.
  • To investigate their multimode luminescent properties for anti-counterfeiting applications.
  • To develop a multi-mode security label based on these nanocrystals.

Main Methods:

  • Colloidal synthesis of lanthanide-doped Cs2ZrCl6 nanocrystals via a hot-injection route.
  • Characterization of luminescence properties under different excitation wavelengths.
  • Fabrication of a triple-mode anti-counterfeiting label.

Main Results:

  • Synthesized Cs2ZrCl6 nanocrystals doped with various lanthanides (Tb, Eu, Pr, Sm, Dy, Ho).
  • Observed efficient host-to-guest energy transfer from self-trapped excitons (STEs) and characteristic Ln3+ emission.
  • Demonstrated excitation-wavelength-dependent emission, enabling different colors under distinct excitation sources.
  • Successfully fabricated a triple-mode anti-counterfeiting label.

Conclusions:

  • Developed a breakthrough excitation-encoded multimode luminescent platform.
  • Lanthanide-doped Cs2ZrCl6 nanocrystals offer high forgery resistance and encoding capacity.
  • Potential applications in next-generation photonic security, scintillation detectors, and solid-state lighting.