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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 >The effect of cation modifier on improving the luminescent properties of borate glasses doped with Yb3+ and Er3+
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The effect of cation modifier on improving the luminescent properties of borate glasses doped with Yb3+ and Er3+

机译：阳离子改性剂对改善YB3 +和ER3 +改善硼酸盐玻璃发光特性的影响

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摘要

In this work we present the preparation and characterization of new fluoroborate glasses doped with Yb3+ and Er3+ and modified by Ca, Sr and Ba oxides. Glasses with compositions (100-x-y) (MO.2B(2)O(3)) + x NaF + y (YbF3:ErF3) (% in mol), where M is Sr, Ba, Ca, x = 10-30% and y = 0, 1 or 5% were prepared by the melt/quenching technique. Glass forming ability and stability were studied by thermal analysis and it is shown that calcium samples presented the highest stability. The nature of the modifier cation has also shown a direct influence on the absolute and relative intensities of the rare earth ions transitions in the visible and near-infrared regions. Though the calcium samples present lower absorption intensities, they display the best up- and down conversion efficiencies. There are evidences that the incorporation of the fluoride compound leads to a fluorine rich environment on the first coordination sphere of the RE, decreasing the probability of OW groups well known quenchers of RE emissions. Though preliminary, the results in this study can become of relevance for the field of solar cell technology improvement via betterment of solar light harvesting in the infrared and ultraviolet regions.
机译：在这项工作中，我们提出的新的氟硼酸盐玻璃掺杂有镱和铒和以Ca，Sr和Ba的氧化物改性的制备和表征。 （以mol％计），其中M是锶，钡，钙，X = 10-30：用组合物（100-XY）（MO.2B（2）O（3））+ X +氟化钠Y（虫eRF3 YbF3）眼镜通过熔融制备/淬火技术％和y = 0,1或5％。玻璃形成能力和稳定性通过热分析研究，其结果表明钙样品呈现最高的稳定性。改性剂，阳离子的性质也显示出对稀土离子跃迁在可见光和近红外区域的绝对和相对强度有直接影响。虽然钙样品呈现低吸收强度，它们显示最佳箭头和下转换效率。有证据表明氟化物引线的掺入对RE的第一配位球的富氟的环境中，减少公知的RE排放淬灭剂基团OW的概率。虽然初步的，在该研究的结果可以通过在红外和紫外区域的太阳光收获用于改善的太阳能电池技术的改进领域变得相关。

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