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首页> 外文期刊>RSC Advances >Europium doped transparent glass ceramics containing CaF2 micron-sized crystals: structural and optical characterization
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Europium doped transparent glass ceramics containing CaF2 micron-sized crystals: structural and optical characterization

机译：铕掺杂透明玻璃陶瓷含有CAF2微晶晶体：结构和光学表征

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摘要

Transparent glass ceramics containing CaF2 micron-sized crystals were prepared using a modified liquid-phase sintering route. The morphology and microstructural evolution of the CaF2 crystals before and after liquid-phase sintering were examined using X-ray diffraction, field-emission scanning electron microscopy and transmission microscopy. After sintering at 800 degrees C for 10 min, the CaF2 crystals were approximately 20 mm in size and were uniformly distributed throughout a precursor glass prepared using melt-quenching method. The glass ceramic containing CaF2 micron-sized crystals prepared using liquid-phase sintering achieved the highest in-line transmittance of 76% in the visible region and 92% in the near-IR region. High near-IR transmittance of glass ceramics was attributed to the matching of the refractive index of the precursor glass with that of CaF2 in the near-IR region. The luminescence properties and local environment of Eu3+ in the precursor glass and glass ceramic were investigated using photoluminescence spectra, photoluminescence lifetimes and phonon sideband spectroscopy, and the results determined that some of the Eu3+ ions in the precursor glass incorporate into CaF2 micron-sized crystals after sintering and enter C-4v site symmetry.
机译：使用改性的液相烧结途径制备含有CAF2微米尺寸晶体的透明玻璃陶瓷。使用X射线衍射，现场 - 发射扫描电子显微镜和透射显微镜检查液相烧结前后CAF2晶体的形态和微观结构演化。在800℃下烧结10分钟后，CAF2晶体的尺寸约为20mm，并且在使用熔融淬火方法制备的前体玻璃中均匀分布。使用液相烧结制备的玻璃陶瓷含有CAF2微米尺寸的晶体，在可见区域中获得的最高在线透射率为76％，近红外区域的92％。玻璃陶瓷的高接近IR透射率归因于近红外区域中的前体玻璃的折射率与CAF2的折射率的匹配。使用光致发光光谱，光致发光寿命和声子边带光谱研究了前体玻璃和玻璃陶瓷中EU3 +的发光性质和局部环境，结果确定了前体玻璃中的一些EU3 +离子掺入CAF2微米尺寸后的晶体中烧结并进入C-4V站点对称性。

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  • 来源
    《RSC Advances》 |2016年第60期|共8页
  • 作者

    Jiang Yiguang; Zhang Pande; Wei Tao; Fan Jintai; Jiang Benxue; Mao Xiaojian; Zhang Long;

  • 作者单位

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

    Chinese Acad Sci Shanghai Inst Opt &

    Fine Mech Key Lab Mat High Power Laser Shanghai 201800 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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