Optical anti-counterfeiting technology, as a preventive measure, has deeply permeated our daily lives. Visually readable codes designed based on optical materials are widely used due to their ease of verification, reasonable cost, and difficulty in replication. The rapid development of modern technology and the increasingly rampant activities of counterfeiting pose greater challenges to optical anti-counterfeiting technology. Consequently, optical anti-counterfeiting material systems based on multimodal integrated applications have garnered widespread attention.
In a new paper published in
Light: Science & Applications, a team of scientists, led by Professor Jing Wang from Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, China, and co-workers have developed a non-stoichiometric persistent luminescence (PersL) inorganic material, CaGaxO4:Bi (
x < 2), which is capable of responding to various ultraviolet light stimuli.
