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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Sintered porous glasses hosting luminescent species of different nature: Eu3+ ions and Tb3+-doped Ba2TiSi2O8 glass-ceramic powder
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Sintered porous glasses hosting luminescent species of different nature: Eu3+ ions and Tb3+-doped Ba2TiSi2O8 glass-ceramic powder

机译：烧结多孔玻璃托管不同性质的发光物种：Eu3 +离子和Tb3 + - 掺杂的Ba2tisi2O8玻璃陶瓷粉

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摘要

We report on the employment of a nano-porous Vycor-type glass as host for two luminescent substances of very different physical and chemical nature, which share the same porous space. Firstly, BTS:Tb3+ glass-ceramic nano-powders were infiltrated in the porous structure and secondly Eu3+ ions from a nitrate aqueous solution were included afterwards. Upon sintering, the porous silica matrix collapses, embedding both luminescent species. We focused on the micro and nano-structure of the sintered glasses. Upon sintering a europium silicate phase crystallizes as monocrystalline hexagonal nano-rods, which coexist with amorphous round particles below 100 nm enriched in Eu and Si. Both kinds of particles are embedded in a cristobalite matrix. The interesting microstructure is reported for the first time. The sintering heating rate influences the microstructure after the sintering. The microstructure was investigated by a last generation TEM microscope with aberration correction, EDXS and an exhaustive electron diffraction analysis. The inclusion of BTS:Tb3+ is only limited, and thus, the its role in the optical properties of the final material is negligible. Luminescence upon UV excitation shows the characteristic emission peaks of Eu3+. This work highlights the possibility of combining several luminescent materials inside a silica matrix.
机译：我们报告纳米多孔型玻璃的就业，因为宿主为两个致光物质的宿主，其具有非常不同的物理和化学性质，其共享相同的多孔空间。首先，BTS：Tb3 +玻璃酰型纳米粉末在多孔结构中渗透，然后，之后将来自硝酸盐水溶液的Eu3 +离子。在烧结时，多孔二氧化硅基质坍塌，嵌入发光物种。我们专注于烧结眼镜的微型和纳米结构。在烧结铕硅酸甲硅酸盐时，结晶为单晶六边形纳米棒，其与低于100nm的无定形圆形颗粒共存，富含欧盟和Si。两种颗粒都嵌入了ristobalite基质中。有趣的微观结构是第一次报告的。烧结加热速率影响烧结后的微观结构。通过具有像差校正，EDX和详尽的电子衍射分析的最后一代TEM显微镜研究了微观结构。包含BTS：Tb3 +仅限于限制，因此，其在最终材料的光学性质中的作用可忽略不计。紫外线激发时的发光显示EU3 +的特征发射峰。这项工作突出了在二氧化硅基质内结合多个发光材料的可能性。

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