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An aerosol synthesized CeO2: Eu3+/Na+ red nanophosphor with enhanced photoluminescence

机译：用于气溶胶的CeO2：Eu3 + / Na +红纳米磷，具有增强的光致发光

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摘要

In this work, CeO2: Eu3+/Na+ nanoparticles with high photoluminescence were prepared via a conventional spray pyrolysis process using ethylene glycol (EG) as an organic additive. CeO2: Eu had intensive emission due to the D-5(0) -> F-7(1) (orange) or D-5(0) -> F-7(2) (red) transition of Eu3+. The R/O emission ratio showed a linear increment with the Eu concentration, which was attributed to the reduction in the local symmetry of Eu3+ -substituted sites. The optimal Eu concentration to achieve the highest emission intensity was 4 at%, and the luminescence quenching was revealed to occur through a dipole-dipole interaction. The use of EG as a chemical additive could prepare CeO2: Eu nanoparticles of smaller than 80 nm. Also, the emission intensity of nanoparticles was enhanced about 16.5 times higher via codoping Na+ with Eu3+ in the CeO2 matrix, which was attributed to the charge compensation as well as the increase of crystallite size. The use of EG and co-dopant Na+ was proved to be a simple and excellent way to synthesize highly luminescent nanoparticles via spray pyrolysis.
机译：在这项工作中，通过使用乙二醇（例如）作为有机添加剂，通过常规喷雾热解过程制备具有高光致发光的Eu3 + / Na +纳米颗粒。 CEO2：欧盟由于D-5（0） - > F-7（1）（橙色）或D-5（0） - > F-7（2）（红色）转变为EU3 +，欧盟具有深入发射。 R / O发射比显示与EU浓度的线性增量，其归因于EU3 + -substited位点的局部对称性的减少。实现最高发射强度的最佳EU浓度为4at％，并且揭示了通过偶极 - 偶极相互作用发生的发光猝灭。使用例如化学添加剂可以制备CeO 2：Eu纳米颗粒小于80nm。此外，通过CeO 2基质中的CeO3 +在CeO3 +中增强纳米颗粒的发射强度约为16.5倍，归因于电荷补偿以及微晶尺寸的增加。被证明使用例如和共掺杂Na +是一种通过喷雾热解合成高发光纳米颗粒的简单且优异的方法。

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  • 来源
    《RSC Advances》 |2016年第84期|共8页
  • 作者

    Min Byeong Ho; Lee Jong Chan; Jung Kyeong Youl; Kim Dae Sung; Choi Byung-Ki; Kang Wkang-Jung;

  • 作者单位

    Kongju Natl Univ Dept Chem Engn 1223-4 Cheonan Daero Cheonan 331717 Chungnam South Korea;

    Kongju Natl Univ Dept Chem Engn 1223-4 Cheonan Daero Cheonan 331717 Chungnam South Korea;

    Kongju Natl Univ Dept Chem Engn 1223-4 Cheonan Daero Cheonan 331717 Chungnam South Korea;

    KICET Ecocompos Mat Ctr 101 Soho Ro Jinju Si Gyeongsangnam D South Korea;

    CQV Co Ltd 144 Seongjung Ro Jincheon Gun Chungcheong Buk South Korea;

    CQV Co Ltd 144 Seongjung Ro Jincheon Gun Chungcheong Buk South Korea;

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