Unleashing the potential of rare earth ions in modified calcium titanate for strategic anti-counterfeiting application.

Chem Commun (Camb)

Centre for Nanotechnology Research, Vellore Institute of Technology, Vellore - 632014, Tamil Nadu, India.

Published: January 2025

Technological advancements have intensified the demand for effective counterfeiting protection. This work presents multi-level security features in a (Ca,Zn)TiO:Pr,Er phosphor. A dual doping strategy synergistically results in dynamically changing luminescence emission. Upon excitation at 379 nm, the sample exhibits a yellowish green emission and exhibits deep red persistent emission for 12 minutes.

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http://dx.doi.org/10.1039/d4cc05643dDOI Listing

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