Manganese-doped zinc germanate phosphors with vivid luminescent properties for anti-counterfeit applications
Manganese-doped zinc germanate phosphors with vivid luminescent properties for anti-counterfeit applications
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DOI：
10.1016/j.optmat.2023.114036
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发表时间：
2023-08
影响因子：
3.9
通讯作者：
Zishen Yang;Levi D. Spencer;Delaney R. Patocka;Anjaneyulu Putta;E. E. Schnetzer-E.;J. Kellar;Chaoyang Jiang
中科院分区：
文献类型：
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作者：
Zishen Yang;Levi D. Spencer;Delaney R. Patocka;Anjaneyulu Putta;E. E. Schnetzer-E.;J. Kellar;Chaoyang Jiang
荧光材料通常用于光学标签中用于防伪目的。然而，这些众所周知的材料可能容易被伪造。因此，必须开发具有独特光学性质的新型发光材料。本文采用高温固相反应法制备了无机基质金属掺杂荧光粉。合成的Mn掺杂锗酸锌（ZGO：Mn）荧光粉，其特征在于使用各种技术，如X射线粉末衍射和光致发光光谱，以了解其结构和光学性质。ZGO：Mn磷光体表现出绿色荧光、持久发光和光激励发光（PSL），这对于防伪应用是理想的。在各种基材上使用PSL活性材料的几个实例证明了它们防止伪造和伪造的能力。我们进一步表明，iPhone可以用来显示基于ZGO：Mn的安全标签。本研究有助于探索新的安全材料，并为安全和认证技术的发展提供了实际意义。
Fluorescent materials are commonly used in optical labels for anti-counterfeiting purposes. However, these well-known materials can be vulnerable to forgery. It is thus essential to develop new types of luminescent materials with unique optical properties. In this paper, we prepared metal-doped phosphor materials with an inorganic matrix using a high temperature solid-state reaction. The synthesized Mn-doped zinc germanate (ZGO:Mn) phosphors were characterized using various techniques, such as X-ray powder diffraction and photoluminescence spectroscopy, in order to understand their structural and optical properties. The ZGO:Mn phosphors exhibit green color fluorescence, persistent luminescence, and photostimulated luminescence (PSL), which are ideal for anti-counterfeiting applications. Several examples of using the PSL active materials on various substrates demonstrate their capability to prevent counterfeiting and forgery. We further showed that an iPhone can be used to reveal the ZGO:Mn-based security labels. This study contributes to the exploration of novel security materials and offers practical implications for the development of security and authentication technologies.