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Luminescence of some zirconium-containing compounds under vacuum ultraviolet excitation

机译:真空紫外线激发下某些含锆化合物的发光

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Photoluminescence of compounds that contain stoichiometric zirconium has been studied under vacuum ultraviolet excitation. The compounds show emission peaking at 280-320 nm while the excitation spectra show some bands in 130-190 nm region. The ultraviolet emission is explained as Zr to O charge transfer transition. The luminescence result and structural information classify the studied compounds into two groups. The former group involves ZrP2O7, CaZr(PO4)(2), NaZr2(PO4)(3), Ca2ZrSi4O12, Ca3ZrSi2O9 and SrZrSi2O7, which show rather intense luminescence and do not have any infinite Zr-O-Zr-O-3D chain or link in their structure. The latter group is CaZrO3 and ZrSiO4, which do contain infinite Zr-O-Zr-O-3D chain and show quite weak luminescence. Luminescence of Ca1-xMnxZr(PO4)(2) has also been studied. By replacing a part of Ca with Mn, ultraviolet emission of the host weakens and visible emission peaking at 540 nm appears. It is claimed that transfer of absorbed energy from Zr to Mn occurs. (c) 2005 Elsevier B.V. All rights reserved.
机译:在真空紫外激发下已经研究了含有化学计量的锆的化合物的光致发光。化合物在280-320 nm处显示发射峰,而激发光谱在130-190 nm区域显示一些谱带。紫外线发射被解释为Zr到O的电荷转移跃迁。发光结果和结构信息将所研究的化合物分为两组。前一组涉及ZrP2O7,CaZr(PO4)(2),NaZr2(PO4)(3),Ca2ZrSi4O12,Ca3ZrSi2O9和SrZrSi2O7,它们显示出较强的发光特性,并且没有任何无限的Zr-O-Zr-O-3D链或链接到他们的结构。后一组是CaZrO3和ZrSiO4,它们确实包含无限的Zr-O-Zr-O-3D链,并且显示出相当弱的发光。还研究了Ca1-xMnxZr(PO4)(2)的发光。通过用Mn代替一部分Ca,主体的紫外线发射减弱并且在540nm出现可见发射峰。据称发生了吸收能量从Zr到Mn的转移。 (c)2005 Elsevier B.V.保留所有权利。

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