Journal of Inorganic Materials, Volume. 36, Issue 12, 1256(2021)

Luminescence Property of the Multicolor Persistent Luminescence Materials for Dynamic Anti-counterfeiting Applications

Cong ZHANG*... Yurou LI, Kang SHAO, Jing LIN, Kai WANG and Zaifa PAN |Show fewer author(s)
Author Affiliations
  • College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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    Luminescent anti-counterfeiting has characteristics of visibility and convenience, which is a popular method in many anti-counterfeiting technologies. However, this anti-counterfeiting luminescent materials have the shortcomings of single emission color and static anti-counterfeiting pattern, leading to easy imitablity. It is urgent to develop new luminescent materials that can achieve dynamic and more reliable anti-counterfeiting performance. In this research, the multicolor persistent luminescence material, chromium doped zinc gallogermanate, was prepared by hydrothermal method. Its persistent luminescence property and dynamic anti-counterfeiting application potential were investigated. Experimental results show that the emission intensity in blue-green and red light regions can be adjusted by changing the raw materials ratio of gallium to germanium. Under the excitation of 254 and 365 nm UV light, a series of samples are observed to be white and red, respectively, indicating multi-mode luminescence characteristics. Furthermore, the decay rate of blue, green and red components in white afterglow is different, so the afterglow color can change dynamically over time. Anti-counterfeiting patterns, designed based on this multicolor afterglow features, improves the security through dynamic change of afterglow color in the time dimension, demonstrating the potential application in dynamic anti-counterfeiting.

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    Cong ZHANG, Yurou LI, Kang SHAO, Jing LIN, Kai WANG, Zaifa PAN. Luminescence Property of the Multicolor Persistent Luminescence Materials for Dynamic Anti-counterfeiting Applications[J]. Journal of Inorganic Materials, 2021, 36(12): 1256

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    Paper Information

    Category: EDITORIAL

    Received: Jan. 25, 2021

    Accepted: --

    Published Online: Sep. 16, 2022

    The Author Email: ZHANG Cong (1765521429@qq.com)

    DOI:10.15541/jim20210043

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