双壳层包覆稀土离子掺杂CsPbCl_(3)纳米晶的多色荧光防伪  

Multicolor Fluorescent Anti-Counterfeiting of Rare Earth Ion-Doped CsPbCl_(3)Nanocrystals with Double-Shell Layers

作　　者：师慧 张力夫 闫奥 龚梦梦 武波亨 吕泽华 张瑞 SHI Hui;ZHANG Lifu;YAN Ao;GONG Mengmeng;WU Boheng;LV Zehua;ZHANG Rui(School of Applied Science,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学应用科学学院,山西太原030024

出　　处：《福建师范大学学报(自然科学版)》2025年第2期96-103,共8页Journal of Fujian Normal University:Natural Science Edition

基　　金：山西省自然科学基金项目(20210302123221、202203021222207、202303021222175、202303021212220)。

摘　　要：全无机钙钛矿纳米晶具有高荧光量子产率、可调带隙、窄发射峰等优异性能,被广泛应用于光电探测、太阳能电池、防伪等领域。采用稀土离子掺杂并结合双壳层包覆方法,成功制备了稳定性较强的CsPbCl_(3)钙钛矿纳米晶荧光油墨及粉末。研究了不同壳层包覆下稀土离子掺杂CsPbCl_(3)钙钛矿纳米晶的荧光特性及相关的结构特性。结果表明,双壳层包覆Tb^(3+)和Eu^(3+)掺杂的CsPbCl_(3)纳米晶具有良好的荧光性能,且保持了CsPbCl_(3)的四方晶系结构。利用不同稀土离子掺杂钙钛矿纳米晶呈现多色荧光的特点,该纳米晶荧光油墨和粉末可以用于信息加密以及潜指纹识别。3种荧光油墨对水的响应各不相同,丰富了信息加密方式。双壳层包覆荧光粉末在环境中的高稳定性提高了潜指纹识别的实用性。这种多色荧光钙钛矿纳米晶在信息防伪领域展现了良好的应用前景。All inorganic perovskite nanocrystals have been widely used in photoelectric detector,solar cells,anti-counterfeiting,and other fields due to their high fluorescence quantum yield,precisely tunable band gap,and narrow emission peaks.The CsPbCl_(3)perovskite nanocrystals are successfully prepared using rare earth ion doping and double-shell coating methods,resulting in fluorescent inks and powders with strong stability.The fluorescence properties and related structural properties of rare earth ion-doped CsPbCl_(3)perovskite nanocrystals with different shell coatings are investigated.The results show that Tb^(3+)and Eu^(3+)ion-doped CsPbCl_(3)perovskite nanocrystals with double-shell layers exhibit good fluorescence properties,and maintain the tetragonal crystal system structure of CsPbCl_(3).The fluorescent ink and powder can be used for information encryption and latent fingerprint identification utilizing the multicolor fluorescence of different rare earth ion-doped perovskite nanocrystals.The three fluorescent inks exhibit different responses to water,which enriches the information encryption methods.The fluorescent powder with double-shell layers enhances the practicality of latent fingerprint identification due to its high environmental stability.These multicolor fluorescence perovskite nanocrystals show promising applications in the field of information anti-counterfeiting.

关 键 词：钙钛矿纳米晶 稀土离子 双壳层 多色荧光 防伪 信息加密 潜指纹识别 

分 类 号：O482.31[理学—固体物理]