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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >High-Pressure Effect in Vis-NIR Emission of Sm3+-Doped GeO2-PbO Glasses
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High-Pressure Effect in Vis-NIR Emission of Sm3+-Doped GeO2-PbO Glasses

机译：SM3 +掺杂的Geo2-PbO眼镜Vis-Nir排放中的高压效果

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摘要

Spectroscopic and structural properties of GeO2-PbO glasses doped with Sm3+ ion were investigated before and after densification at 7.7 GPa using X-ray difraction, Raman spectroscopy, ellypsometry, Extended X-ray absorption fine structure (EXAFS) and absorption and luminescence spectroscopy. Judd-Ofelt (J-O) intensity parameters Omega(lambda) (lambda = 2, 4, and 6) were calculated and the Omega(2) parameter decreased for the glass after densification at 7.7 GPa due to the structural changes of the host glass induced by pressure. Shifts in the Raman band toward lower energies and variations in the intensities of the EXAFS curves indicated that the local environment around Sm3+ became more symmetric after densification, with shorter average Sm-O distances than in the crystalline standard. The radiative properties in the vis and NIR regions were also affected by high pressure.
机译：使用X射线Difraction，拉曼光谱法，拉曼光谱法，延伸X射线吸收细结构（EXAF）和吸收和发光光谱，在7.7GPa的致密化和掺杂有SM3 +离子的Geo2-PbO眼镜的光谱和结构性能。 计算judd-elt（jo）强度参数ω（lambda）（Lambda）（Lambda = 2,4和6），并且由于诱导的宿主玻璃的结构变化，在7.7GPa下致密化后ω（2）参数降低 压力。 在拉曼带中朝向更低的能量和exafs曲线的强度的变化表明，在致密化之后，SM3 +周围的局部环境变得更加对称，并且平均SM-O距离比晶体标准更短。 VIS和NIR区域中的辐射性能也受高压的影响。

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