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用于太阳盲成像的多刺激远紫外线发光

Chongyang Cai¹, Leipeng Li², Xiaohuan Lv¹

¹College of Physics Science and Technology, Hebei University, Baoding, China.

Nature communications

|July 5, 2025

概括

新的化 (SrF2) 晶体在222nm左右发射远紫外线C (远紫外线) 光. 这些材料还表现出可调节的发光和自我恢复的机械发光,用于先进的应用.

科学领域:

材料科学材料科学材料科学
发光的光度是非常的低.
固态物理固态物理

背景情况:

用兰化物合的发光材料对于应力传感和防伪等应用至关重要.
目前的材料仅限于380-1540nm范围,阻碍了太阳盲成像和隐蔽通信中的应用.
需要在远紫外线C (远紫外线) 区域 (200-230nm) 发射材料.

研究的目的:

为远紫外线光学设计提出指导方针.
在化 (SrF2) 晶体中实现多次刺激的远紫外线发光.
探索这些材料在先进应用中的潜力.

主要方法:

制定了远紫外线光学设计的指南.
合成的化 (Pr3+) 合的SrF2晶体.
研究的发光特性,包括多刺激发射和机械发光.

主要成果:

在Pr3+兴奋的SrF2中,在~222nm获得多刺激的远紫外线发光,归因于4f5d → 4f^2过渡.
通过将SrF2与各种兰坦化物 (Ce3+,Nd3+,Sm3+,Eu2+,3+,Gd3+,Tb3+,Dy3+,Ho3+,Er3+,Tm3+,Yb3+) 进行兴奋剂,证明了从200nm到1700nm的广泛光谱覆盖.
在X射线照射后观察到自我恢复的机械发光和刺激的辐射.

结论:

合Pr3+的SrF2晶体对于产生远紫外线光是有效的.
SrF2对各种兰化剂具有很高的耐受性,使其能够产生广泛的光谱辐射.
这些材料在苛刻的环境中为高对比度标记和结构健康监测提供了独特的机会.

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