Abstract Herein, a series of SrTiO3:Nd3+ (1–11 mol %) nanophosphors has been prepared via a conventional hydrothermal route. Their anti-counterfeiting and latent fingerprint visualization applications are reported, which show important level-III features and unclonable tags. The cubic structure was confirmed by powdered X-ray diffraction studies with space group Pm-3m (No-221). The photoluminescence (PL) characterization results evinced that the nanophosphor emits intense blue light. The optimized nanophosphors were used to visualize latent fingerprints through recognizing level I-III ridges by a reduced background hindrance and can be utilized for visualizing latent fingerprints on difficult substrate surfaces with superior sensitivity, high contrast and selectivity. Further, a furthermost possible stochastic process to make unclonable anti-counterfeiting tags using optimized nanophosphor was designed to reduce counterfeit products. Therefore, it is believed that this optimized nanophosphor for visualization of latent fingerprints as well as unclonable anti-counterfeiting tags will find widespread use in forensic investigations and product safety applications.

中文翻译：

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用于多功能应用的基于三价稀土 Nd3+ 掺杂 SrTiO3 的纳米磷光体通过水热途径获得的光度特征和强蓝光发射

摘要 本文通过传统的水热途径制备了一系列 SrTiO3:Nd3+ (1-11 mol%) 纳米磷光体。报告了他们的防伪和潜在指纹可视化应用，显示了重要的 III 级特征和不可克隆的标签。通过具有空间群 Pm-3m (No-221) 的粉末 X 射线衍射研究证实了立方结构。光致发光 (PL) 表征结果表明纳米磷光体发出强烈的蓝光。优化的纳米磷光体通过减少背景障碍识别 I-III 级脊，用于显示潜在指纹，并且可用于以优异的灵敏度、高对比度和选择性显示困难基材表面上的潜在指纹。更多，使用优化的纳米荧光粉制造不可克隆的防伪标签的最可能随机过程旨在减少假冒产品。因此，相信这种用于潜在指纹可视化以及不可克隆的防伪标签的优化纳米磷光体将在法医调查和产品安全应用中得到广泛应用。