Multiple anti-counterfeiting strategy by integrating up-conversion,down-shifting luminescence, phosphorescence and photochromism into Na YTiO4: Bi/Er phosphors
Multiple anti-counterfeiting strategy by integrating up-conversion,down-shifting luminescence, phosphorescence and photochromism into Na YTiO4: Bi/Er phosphors作者机构:Songshan Lake Materials LaboratoryDongguan 523808China Department of PhysicsRenmin University of ChinaBeijing 100872China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China
出 版 物:《Journal of Materials Science & Technology》 (材料科学技术(英文版))
年 卷 期:2022年第130卷第35期
页 面:219-226页
核心收录:
学科分类:081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
基 金:supported by the Introduced Innovative R&D Team Project of "The Pearl River Talent Recruitment Program"of Guangdong Province (No.2019ZT08C321) Guangdong Basic and Applied Basic Research Foundation (No.2019A1515110443) the National Natural Science Foundation of China (No.51872327)
主 题:Anti-counterfeiting Up-conversion Down shifting Phosphorescence Photochromism NaYTiO4 Bi/Er
摘 要:With the rapid development of science and technology,the high-security-level anti-counterfeiting technique is essential for ensuring property or information *** this work,we prepared micron NaYTiO_(4):Bi/Er(NYT:Bi/Er) phosphors with integrating up-conversion(UC) photoluminescence,downshifting(DS) emission,phosphorescence and photochromism(PC) performances for advanced multiple anti-counterfeiting *** to the abundant energy levels of Er^(3+)ions,the UC and DS luminescence behaviors are ***,the yellow-green emission of Er^(3+)ions can be observed upon 980 nm excitation,and the bright green emission is demonstrated under 281 or 254 nm excitation due to the energy transitions of Er^(3+)ions and the energy transfer process from Bi^(3+)to Er^(3+)***,the introduction of Bi^(3+)ions generates defect levels in the matrix and thus leads to ***,the repeatable PC performance could be triggered by the 365 nm irradiation and vanished with 450 nm illumination or thermal *** verify the practical usability of NYT:Bi/Er phosphors on anti-counterfeiting applications,some experiments are designed and successfully *** is believed that the NYT:Bi/Er phosphors can be a promising candidate for high-security-level multiple anti-counterfeiting.