Recent advances in the anti-counterfeiting applications of long persistent phosphors

Area of Science:

• Materials Science
• Optics
• Chemistry

Background:

• Counterfeit products cause significant financial losses and pose health risks globally.
• Effective anti-counterfeiting methods and authentication technologies are urgently needed.
• Persistent luminescence (PersL) materials present unique properties for advanced security applications.

Purpose of the Study:

• To summarize recent advancements in anti-counterfeiting technology utilizing long persistent phosphors.
• To explore various construction strategies for optical codes based on PersL materials.
• To discuss the mechanisms and future potential of PersL-based anti-counterfeiting solutions.

Main Methods:

• Review of current literature on persistent luminescence materials for anti-counterfeiting.
• Analysis of optical code construction strategies: multicolor, orthogonal, dynamic, and stimulus-response luminescence.
• Exploration of the underlying mechanisms of PersL-based anti-counterfeiting.

Main Results:

• PersL materials offer distinctive spatial and temporal dynamic spectrum performance for high-capacity optical codes.
• Various luminescence strategies (multicolor, orthogonal, dynamic, stimulus-response) enhance anti-counterfeiting capabilities.
• Understanding PersL mechanisms is key to developing next-generation authentication technologies.

Conclusions:

• Persistent luminescence materials are highly promising for combating product counterfeiting.
• Advanced optical code designs using PersL can significantly improve authentication.
• Further research into PersL materials will expand their application in anti-counterfeiting and beyond.