余辉
荧光粉
光致发光
发光
材料科学
荧光
兴奋剂
离子
分析化学(期刊)
聚丙烯酸
价(化学)
表征(材料科学)
纳米技术
光电子学
化学
光学
物理
聚合物
复合材料
有机化学
伽马射线暴
天文
色谱法
作者
Jiao Wu,Quanxiao Liu,Peng Gao,Jigang Wang,Yuansheng Qi,Zhenjun Li,Junming Li,Tao Jiang
出处
期刊:Nanomaterials
[MDPI AG]
日期:2023-08-30
卷期号:13 (17): 2457-2457
被引量:2
摘要
Herein, a series of novel long afterglow nanophosphors BaYAl3O7:Eu2+, Nd3+ was synthesized by the combustion method. The investigation encompassed the characterization of X-ray diffraction, morphology, chemical valence, elemental composition, and photoluminescence behavior of BaYAl3O7:Eu2+ and BaYAl3O7:Eu2+, Nd3+ nanoparticles. Under 365 nm excitation, BaYAl3O7:Eu2+ and BaYAl3O7:Eu2+, Nd3+ show emission bands centered at 497 nm and 492 nm, which are attributed to the 4f65d→4f7 transition of Eu2+ ions. The optimal samples of BaYAl3O7:0.03Eu2+ and BaYAl3O7:0.03Eu2+, 0.02Nd3+ have average fluorescence lifetimes of 850 ns and 1149 ns, respectively. The co-doping of Nd3+ ions as the trap centers produced long afterglow luminescence properties, and the afterglow time could reach up to 8 min. Furthermore, the fluorescent powder can be mixed with polyacrylic acid to prepare anti-counterfeiting inks; a clover pattern and snowflake pattern have been successfully printed using screen printing technology, proving its potential application in the field of anti-counterfeiting.
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