氧氟微晶玻璃中稀土离子分布对红外发光性能的影响研究

发布时间：2018-06-03 15:24

本文选题：稀土离子 + 微晶玻璃　；参考：《燕山大学学报》2017年04期

【摘要】：探索氧氟微晶玻璃中氟化物纳米晶内稀土离子的分布状态及调控方法,对实现稀土离子的高效红外辐射发光具有重要意义。实验制备了含PbF_2:Er~(3+)纳米晶的微晶玻璃,采用X射线衍射、高分辨透射电镜以及电子能量损失谱等方法证明,微晶玻璃中大部分稀土离子富集到PbF_2纳米晶体中,并且氟化物纳米晶中稀土离子分布不均匀,存在富集相。在此基础上,采用共掺光学惰性Y~(3+)的方法调控氧氟微晶玻璃氟化物纳米晶中活性稀土离子的分布状态,发光性能测试显示氟化物纳米晶中活性稀土离子的富集与团簇被有效抑制,Er~(3+)离子在2.73μm波段、Tm~(3+)离子在1.47μm波段、Ho~(3+)离子在1.2μm波段的发光显著增强。
[Abstract]:The distribution and control of rare earth ions in fluoride nanocrystals in oxyfluoride glass-ceramics are of great significance to the realization of high efficiency infrared luminescence of rare earth ions. The glass-ceramics containing PbF_2:Er~(3) nanocrystals were prepared experimentally. X-ray diffraction, high resolution transmission electron microscopy and electron energy loss spectroscopy were used to prove that most of the rare earth ions in the glass-ceramics were enriched into PbF_2 nanocrystals. Moreover, the rare earth ions in fluoride nanocrystals are distributed unevenly and there is enrichment phase. On this basis, the distribution of active rare earth ions in oxyfluoride glass-ceramics nanocrystalline was regulated by co-doped optical inert yttrium 3). The luminescence performance tests show that the enrichment of active rare earth ions and the effective inhibition of clusters in fluorides nanocrystalline show that the luminescence of the ion at 1.47 渭 m band is significantly enhanced at 1.2 渭 m band, and that the cluster is effectively inhibited at 2.73 渭 m ~ (-1) 渭 m ~ (-) ~ (-1) ~ (-1) 渭 m ~ (-1) ~ (-1) ~ (-1) 渭 m ~ (-1).
【作者单位】：硅酸盐建筑材料国家重点实验室(武汉理工大学);
【基金】：国家重点研发计划资助项目(2016YFB0303701)
【分类号】：TQ171.733

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