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合成的盐Tb3+,Pr3+或Dy3+单一合的CaTa4O11,具有持久的发光
Yuhan Fan1, Yongze Cao1, Meiling Li1
1Department of Physics, Dalian Maritime University, Dalian, 116026, China. cyz@dlmu.edu.cn.
Physical chemistry chemical physics : PCCP
|November 15, 2024
概括
合成了基于坦酸盐 (CaTa4O11) 和 (Tb3+),praseodymium (Pr3+) 和dysprosium (Dy3+) 的新型持久发光 (PersL) . 这些材料发出绿色和色的光线,并显示出发光显示器和防伪标签的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低.
背景情况:
- 持久发光 (PersL) 材料在激发时储存能量,并随着时间的推移将其释放为光.
- 坦酸盐 (CaTa4O11) 是的有希望的宿主材料.
- 稀土离子如Tb3+,Pr3+和Dy3+以它们的发光特性而闻名.
研究的目的:
- 为了合成和表征Tb3+,Pr3+,和Dy3+单 CaTa4O11 (CTO) 持久发光光.
- 为了研究发光性质,包括发射颜色和衰变时间.
- 评估这些新型的潜在应用.
主要方法:
- 使用KCl流量的盐合成方法.
- 持久发光性质的表征.
- 对陷深度和发光衰变时间的分析.
主要成果:
- 成功合成了Tb3+,Pr3+和Dy3+的单CTO光体.
- 观察到绿色的PersL用于Tb3+和色的PersL用于Pr3+或Dy3+的化样品.
- 分别为Tb3+,Pr3+和Dy3+杂的CTO的确定陷深度为0.33,0.31和0.30 eV.
- 实现的PersL时间为52.20s (3mol% Tb3+),35.00s (1mol% Pr3+) 和59.46s (1mol% Dy3+) 的时间.
结论:
- 合成的Tb3+,Pr3+和Dy3+单CTO光体表现出不同的持续发光特性.
- 这些体在254nm紫外线激发时,显示出在发光显示器和防伪标签中的应用潜力.
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