Issue 23, 2023

Variable halide perovskites: diversification of anti-counterfeiting applications

Abstract

Various anti-counterfeiting techniques have wide applications in logistics, aviation, documentation and military. Achieving facile, quick, low-cost, and difficult-to-replicate advanced luminescence anti-counterfeiting plays a crucial role in preventing and deterring the acts of counterfeiting. Halide perovskites (HPs) possess excellent optoelectronic characteristics and structural versatilities, offering great potential in multimodal and multicolor anti-counterfeiting. This review emphasizes the effects of dimensionality, the coordination number, and bond length in HPs on the regulation mechanism of photoluminescence. Through ion doping and external stimuli of HPs, their optical characteristics and crystalline structures can be changed. Furthermore, HPs have attractive application potential due to their sensitivity to controllable light, thermo, solvent, mechano, and other conditions. The unique structure makes HPs exhibit an afterglow phenomenon, providing promising technical support for anti-counterfeiting work and high-level encryption/decryption. Finally, we present future prospects on the development of HPs which include production processes and potential high-end anti-counterfeiting strategies.

Graphical abstract: Variable halide perovskites: diversification of anti-counterfeiting applications

Article information

Article type
Review Article
Submitted
25 5 2023
Accepted
21 8 2023
First published
29 8 2023

Mater. Chem. Front., 2023,7, 6085-6106

Variable halide perovskites: diversification of anti-counterfeiting applications

Y. Shi, S. Zhao, Y. Zhou and Z. Zang, Mater. Chem. Front., 2023, 7, 6085 DOI: 10.1039/D3QM00595J

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