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首页> 外文期刊>RSC Advances >Borohydride synthesis strategy to fabricate YBO3:Eu3+ nanophosphor with improved photoluminescence characteristics
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Borohydride synthesis strategy to fabricate YBO3:Eu3+ nanophosphor with improved photoluminescence characteristics

机译：硼氢化物合成策略制备YBO3：Eu3 +纳米磷，具有改善的光致发光特性

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摘要

This paper investigates for the first time the use of sodiumborohydride (NaBH4) as a boron source as well as a precipitating agent for successfully preparing high temperature stable YBO3: Eu3+ nanophosphor. Moreover, the potential of this unique borohydride synthesis strategy is compared with the conventional boric acid based solid-state route in terms of phase stability, morphology and photoluminescence characteristics. The novel synthesis approach adopted here renders a high temperature stable phase pure YBO3: Eu3+ nanophosphor at 1200 degrees C with nearly spherical dumb-bell shaped particles in the range of similar to 200 nm to 700 nm and exhibits improved color purity when compared to the irregular polyhedral shaped (size similar to 5 mu m) YBO3: Eu3+ phosphor prepared by the conventional solid-state method. Color purity, determined in terms of R/O ratio, of borohydride YBO3: Eu3+ nanophosphor was found to be 1.72 for the near vacuum ultra-violet (VUV is characterized with wavelength shorter than 200 nm) wavelength of 205 nm, which gradually decreases with increase in excitation wavelength. It has never been reported that the color of YBO3: Eu3+ phosphors can be tuned from pink to reddish-orange. The chromaticity coordinates revealed evidently that the YBO3: Eu3+ phosphor emission is tunable by simply adjusting the excitation wavelengths. In addition to providing spectroscopic data the reason for better color purity and tunability of chromaticity coordinates are also accredited in this work.
机译：本文首次研究了使用钠硼氢化钠（NaBH 4）作为硼源以及成功制备高温稳定YBO3：Eu3 +纳米磷的沉淀剂。此外，在相位稳定性，形态学和光致发光特性方面将这种独特的硼氢化氢化物合成策略的潜力与常规的硼酸基固态路线进行比较。这里采用的新型合成方法使高温稳定相纯YBO3：Eu3 +纳米磷在1200℃下，与20nm至700nm的范围内的几乎球形哑铃形颗粒，并且与不规则相比，具有改善的颜色纯度多面体形状（尺寸类似于5μm的尺寸）YBO3：通过常规固态方法制备的Eu3 +磷光体。根据硼氢化物YBO3：Eu3 +纳米磷的r / o比确定为1.72，对于近近真空超紫（Vuv的特征在于200nm）波长为205nm，逐渐减少激发波长的增加。从未报道过，ybo3的颜色：eu3 +磷光体可以从粉红色到红橙色调谐。色度坐标明显地揭示了YBO3：EU3 +磷光体排放通过简单地调节激发波长来调谐。除了提供光谱数据之外，在这项工作中还认证了色度均匀的更好色彩纯度和可调性的原因。

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  • 来源
    《RSC Advances》 |2015年第15期|共4页
  • 作者

    Srivastava Shubham; Mondal Aparna; Sahu Niroj Kumar; Behera Shantanu K.; Nayak Bibhuti B.;

  • 作者单位

    Natl Inst Technol Rourkela Dept Ceram Engn Odisha 769008 India;

    Natl Inst Technol Rourkela Dept Chem Odisha 769008 India;

    VIT Univ Ctr Nanotechnol Res Vellore 632014 Tamil Nadu India;

    Natl Inst Technol Rourkela Dept Ceram Engn Odisha 769008 India;

    Natl Inst Technol Rourkela Dept Ceram Engn Odisha 769008 India;

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  • 正文语种 eng
  • 中图分类 化学;
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