铕锂硅酸盐LiEuSiN和LiEuSiO——晶体结构与发光
Europium Lithosilicates LiEuSiN and LiEuSiO-Crystal Structures and Luminescence.
作者信息
Rießbeck Kilian M, Seibald Markus, Stoll Christiane, Huppertz Hubert
机构信息
Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck Innrain 80-82, A-6020 Innsbruck, Austria.
ams-OSRAM International GmbH, Mittelstetter Weg 2, D-86830 Schwabmünchen, Germany.
出版信息
Chem Mater. 2024 Sep 12;36(19):9882-9889. doi: 10.1021/acs.chemmater.4c02070. eCollection 2024 Oct 8.
With LiEuSiN, the end member of the solid-solution series set up by substituting the divalent cation in the well-known host materials LiCaSiN and LiSrSiN with Eu(II) could be synthesized and described by means of single-crystal X-ray diffraction and single-grain luminescence spectroscopy. The new compound crystallizes isotypically to LiCaSiN and LiSrSiN in cubic space group 3̅ (no. 205) with a lattice parameter of = 10.7049(2) Å and a cell volume of = 1226.73(7) Å. Irradiated with blue light, LiEuSiN exhibits a narrow-band red emission (λ = 628 nm, 1.97 eV, 15924 cm; fwhm = 83 nm, 0.27 eV, 2143 cm). Also for LiEuSiO, the end member of the solid-solution series of LiSrSiO with Sr(II) substituted by Eu(II), luminescence emission could be measured on a single crystal (λ = 595 nm, 2.05 eV, 16798 cm; fwhm = 116 nm, 0.40 eV, 3211 cm). In this paper, both compounds are being compared with other known members of their solid-solution series regarding structure and luminescence properties.
通过LiEuSiN，可以合成由Eu(II)取代著名主体材料LiCaSiN和LiSrSiN中的二价阳离子所形成的固溶体系列的端成员，并借助单晶X射线衍射和单颗粒发光光谱对其进行描述。新化合物与LiCaSiN和LiSrSiN同型结晶，属于立方空间群3̅（编号205），晶格参数a = 10.7049(2) Å，晶胞体积V = 1226.73(7) Å。用蓝光照射时，LiEuSiN呈现窄带红色发射（λ = 628 nm，1.97 eV，15924 cm⁻¹；半高宽fwhm = 83 nm，0.27 eV，2143 cm⁻¹）。对于LiEuSiO，即LiSrSiO固溶体系列中Sr(II)被Eu(II)取代的端成员，也可以在单晶上测量其发光发射（λ = 595 nm，2.05 eV，16798 cm⁻¹；fwhm = 116 nm，0.40 eV，3211 cm⁻¹）。在本文中，将这两种化合物与其固溶体系列的其他已知成员在结构和发光性质方面进行了比较。
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