欧石灰酸盐Li2EuSi2N4和Li2EuSiO4-晶体结构和发光方式
Kilian M Rießbeck1, Markus Seibald2, Christiane Stoll2
1Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck Innrain 80-82, A-6020 Innsbruck, Austria.
Chemistry of materials : a publication of the American Chemical Society
|October 14, 2024
概括
报告了Li2EuSi2N4和Li2EuSiO4的合成和表征,它们是新型的红色和色发射体. 这些化合物在光电子应用中表现出有前途的发光特性.
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:
- 像Li2CaSi2N4和Li2SrSi2N4这样的主体材料中的固体溶液序列已经得到了很好的确立.
- 用双价替代,如Eu(II),可以产生具有独特性质的新材料.
研究的目的:
- 为了合成和描述固体溶液系列的末端成员Li2EuSi2N4.
- 为了研究Li2EuSi2N4和Li2EuSiO4的发光特性.
- 将这些新化合物与各自固体溶液系列的现有成员进行比较.
主要方法:
- 单晶X射线衍射用于结构确定.
- 单颗粒发光光谱学用于光学属性分析.
- 新型欧化和酸盐化合物的合成.
主要成果:
- Li2EuSi2N4被合成并与 Li2CaSi2N4在空间组Pa3̅.中同型结晶.
- 在蓝光激发时,Li2EuSi2N4在λmax = 628 nm处呈现窄带红色辐射.
- Li2EuSiO4显示在 λmax = 595 nm 的发光辐射.
结论:
- 2EuSi2N4的合成扩展了已知的固体溶液序列,用Eu(II) 替代.
- 无论是Li2EuSi2N4还是Li2EuSiO4,都表现出特有的发光,突出了它们作为的潜力.
- 结构性质和发光性质在相关化合物之间进行比较,提供了对结构性质关系的见解.
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