应用化学 ›› 2025, Vol. 42 ›› Issue (2): 222-229.DOI: 10.19894/j.issn.1000-0518.240248

• 研究论文 • 上一篇    下一篇

镧系离子掺杂CsLu(MoO42荧光粉的多色发光及其防伪应用

伍佳豪, 杨骏()   

  1. 西南大学化学化工学院,重庆 400715
  • 收稿日期:2024-08-05 接受日期:2024-12-30 出版日期:2025-02-01 发布日期:2025-03-14
  • 通讯作者: 杨骏
  • 基金资助:
    国家自然科学基金(52172154)

Multicolor Luminescence Lanthanide Ions Doped CsLu(MoO42 Phosphor and Its Anti-Counterfeiting Application

Jia-Hao WU, Jun YANG()   

  1. School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China
  • Received:2024-08-05 Accepted:2024-12-30 Published:2025-02-01 Online:2025-03-14
  • Contact: Jun YANG
  • About author:jyang@swu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(52172154)

摘要:

近年来,假冒伪劣产品层出不穷,成为全球食品安全和医药领域的重大问题。 为有效打击假冒伪劣产品并保护消费者权益,研究人员在众多防伪技术中高度关注了隐蔽性高、防伪性能优异的荧光材料。 通过高温固相法制备出一系列CsLu(MoO42∶Ln3+(Ln3+=Yb3+/Er3+、Yb3+/Ho3+、Yb3+/Tm3+、Er3+、Dy3+和Dy3+/Eu3+)荧光粉,利用X射线衍射(XRD)、上转换光谱和下转换光谱分别对所得样品的物相和发光特性进行了研究。 在紫外光激发下,基于Dy3+/Eu3+间的能量传递,成功实现多光色调控。 并且在近红外光激发下,CsLu(MoO42∶Yb3+/Er3+、Yb3+/Ho3+和Yb3+/Tm3+分别呈现绿色、红色和蓝色上转换发射。 最后,在254、365和980 nm的多波段激发下,利用多种CsLu(MoO42∶Ln3+荧光粉获得了高分辨的发光图像,可用于多色荧光防伪。

关键词: CsLu(MoO42∶Ln3+荧光粉, 能量传递, 光色调控, 防伪

Abstract:

In recent years, counterfeit and shoddy products have emerged in an endless stream, which has become a major issue in the global food safety and medicine fields. In order to effectively crack down on counterfeit and shoddy products and protect consumers' rights, researchers have paid great attention to fluorescent materials with high concealment and excellent anti-counterfeiting performance among many anti-counterfeiting technologies. A series of CsLu(MoO42∶Ln3+ (Ln3+=Yb3+/Er3+, Yb3+/Ho3+, Yb3+/Tm3+, Er3+, Dy3+, Dy3+/Eu3+) phosphors were synthesized by high-temperature solid-state reaction. X-ray diffraction (XRD), up-conversion spectra and down-conversion spectra were used to characterize the phases and luminescence properties of the obtained samples. Under the excitation of UV, the multi-color regulation was successfully realized by using the energy transfer between Dy3+ and Eu3+. Moreover, under the excitation of NIR, CsLu(MoO42∶Yb3+/Er3+, Yb3+/Ho3+, Yb3+/Tm3+ phosphors realized green, red and blue upconversion emissions, respectively. Finally, under the excitation of 254, 365 or 980 nm, highly distinguishable luminescent images were obtained using various CsLu(MoO42∶Ln3+ phosphors for the application in multicolor fluorescent anticounterfeiting.

Key words: CsLu(MoO42∶Ln3+ phosphors, Energy transfer, Tunable luminescence, Anti-counterfeiting

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