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Influence of surface segregation on the luminescence properties of doped YVO_4 nanocrystals

机译:表面偏析对掺杂YVO_4纳米晶体发光性能的影响

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摘要

For the first time the segregation of doped ions in YVO_4:Pr~(3+) and YVO_4:Er~(3+),Yb~(3+) nanocrystals was revealed by means of spectroscopic techniques. Luminescence spectra are modified due to doped ions redistribution within nanocrystal volume. Variation of heat treatment temperature allows us to determine the diffusion-depended nature of observed doped ions redistribution within the volume of nanocrystal and to trace this process.
机译:首次利用光谱技术揭示了YVO_4:Pr〜(3+)和YVO_4:Er〜(3 +),Yb〜(3+)纳米晶中掺杂离子的偏析。由于掺杂的离子在纳米晶体体积内的重新分布,因此修改了发光光谱。热处理温度的变化使我们能够确定在纳米晶体体积内观察到的掺杂离子再分布的扩散依赖性,并追踪该过程。

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