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隐藏的六价离子与微妙的结构进化在近红外的近红外
Yi-Ting Tsai1, Natalia Majewska2, Mikołaj Kamiński2
1Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.
ACS applied materials & interfaces
|October 16, 2023
概括
这项研究研究了 (Cr) 化氧化的氧化,揭示了Cr6+在准备样本中的聚合和洗后的均Cr3+分布. 这澄清了近红外光学材料中的离子分布.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光学材料 光学材料
背景情况:
- 用添加的无机材料对于近红外光学应用至关重要.
- 这些材料中多价 (Cr) 离子的精确分布和价值状态往往不清楚.
- 了解离子分布是优化材料性能的关键.
研究的目的:
- 为了合成和表征Li ((Sc1-xInx) O2:Cr和多价值的Cr离子.
- 研究洗前和洗后的离子的分布和价值状态的变化.
- 阐明影响光学性质的电子格子相互作用.
主要方法:
- 高分辨率同步射线X射线衍射 (XRD) 用于相位分析.
- Cr K-边缘X射线吸收光谱 (XAS) 用于价值状态的确定.
- 用于离子分布的X射线光 (XRF) 和X射线激发光学发光 (XEOL).
- 光发光 (PL) 和光学特性衰变曲线分析.
主要成果:
- 在Li(Sc1-xInx) O2中确定了两个阶段,由XRD和拉曼光谱证实.
- 作为准备的样本主要含有Cr6+离子,在水洗后转化为主导的Cr3+.
- 发现Cr6+离子聚合,而Cr3+离子表现出均的分布.
- 电子格子相互作用得到解决,解释了光谱不对称性.
结论:
- 这项工作澄清了固态材料中低度多价离子的分布.
- 洗提供了一种控制离子分布和价值状态的方法.
- 这些发现增强了对用于光学应用的Cr合的理解.
关键词:
Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3 + Cr3在Cr6+中,Cr6+是最重要的.激发X射线的光学发光.一个X射线的光效应.接近红外线的光.
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