燃烧合成的BaAl2O4:Eu2+,Nd3+,Pr3+三重联合合的长光:发光和防伪应用
Chuanming Wang1, Jigang Wang1, Yuansheng Qi1
1Beijing Key Laboratory of Printing and Packaging Materials and Technology, Beijing Institute of Graphic Communication, Beijing 102600, China.
Nanomaterials (Basel, Switzerland)
|October 28, 2025
概括
基于化 (BaAl2O4) 和欧 (Eu2+),新 (Nd3+) 和化 (Pr3+) 合的新型蓝绿色长光后照显示出防伪应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 发光和光物理学的发光.
- 固态化学 固态化学
背景情况:
- 酸 (BaAl2O4) 是的有希望的宿主材料.
- 长时间后发光光灯对于需要持续发光的应用至关重要.
- 用Eu2+,Nd3+和Pr3+等稀土离子进行兴奋剂可以调整发光特性.
研究的目的:
- 为了合成和表征BaAl2O4:Eu2+,Nd3+,Pr3+蓝绿色长光后光.
- 为了研究材料特性,发光和后光特性之间的相关性.
- 为了证明这些的应用在防伪技术中.
主要方法:
- 溶液燃烧合成用于制备.
- 用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和X射线光电子光谱 (XPS) 来进行结构和化学表征.
- 紫外线-Vis扩散反射,光发光 (PL) 谱学,以及光学属性评估的光后衰变分析.
主要成果:
- XRD证实了BaAl2O4宿主结构与微量残留物.
- SEM显示了聚合颗粒形态;XPS验证了兴奋剂的价值状态.
- 光学研究揭示了BaAl2O4宿主的宽带差距,Eu2+发射和辅助剂辅助的通路影响发光和后照持久性.
- 使用雪花印刷和使用不同寿命的墨水进行多级认证,证明了防伪能力.
结论:
- 合成的BaAl2O4:Eu2+,Nd3+,Pr3+体表现出理想的长时间后发光特性.
- 该研究确立了材料结构,光学特性,载体捕获和发光性能之间的明确联系.
- 这些提供了一个可行的平台,用于开发先进的防伪解决方案.
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