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首页> 外文期刊>Optical Materials >Tartrate-assisted hydrothermal synthesis of (Ce_(1-x)Tb_x)F_3 nanocrystals for better luminescence
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Tartrate-assisted hydrothermal synthesis of (Ce_(1-x)Tb_x)F_3 nanocrystals for better luminescence

机译：酒石酸酯辅助水热合成（Ce_（1-x）Tb_x）f_3纳米晶体以获得更好的发光

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摘要

Tartrate (Tar(2-), Tar(2-)/(Ce3+ +Tb3+) molar ratio up to 10) was originally examined as a chelate additive for the synthesis of hexagonal-structured (Ce1-xTbx)F-3 nanocrystals (x = 0-0.4) via hydrothermal reaction at 150 degrees C for 24 h. Characterization of the products by XRD, FE-SEM, TEM and optical spectroscopies showed that (1) phase pure products can be obtained up to a Tar(2-)/(Ce3+ +Tb3+) molar ratio of similar to 6.0 and a Tb3+ content (x value) similar to 0.3, (2) the optimal amount of Tb3+ for Tb3+ emission is x similar to 0.1, (3) Tar(2-) tends to preferentially adsorb on (002) basal plane to yield larger plate-like nanocrystals that show better luminescence, (4) Ce3+ - Tb-3(+) energy transfer exists in the Tb3+ doped nanocrystals, and the efficiency of energy transfer was analyzed to be similar to 54.1% at x = 0.10 through lifetime analysis of the 339 nm Ce3+ emission, and (5) the lifetime of the similar to 544 nm green emission of Tb3+ was found to steadily decrease from similar to 9.17 to 4.09 ms with increasing x from 0.05 to 0.30.
机译：酒石酸酯（焦油（2-），焦油（2 - ）/（CE3 ++ TB3 +）摩尔比最多可为螯合添加剂作为合成六边形结构（CE1-XTBX）F-3纳米晶体（x = 0-0.4）通过150℃的水热反应24小时。通过XRD，Fe-SEM，TEM和光学光谱表征所述产物，显示（1）相纯产物可以获得高达焦油（2 - ）/（CE3 + + TB3 +）摩尔比和TB3 +含量（x值）类似于0.3，（2）Tb3 +发射的最佳量的Tb3 +是类似于0.1，（3）焦油（2-）的x，倾向于优先吸附在（002）基础面上，以产生更大的板状纳米晶体显示出更好的发光，（4）CE3 + - > TB-3（+）能量转移存在于TB3 +掺杂的纳米晶体中，通过339的寿命分析，分析能量转移的效率与x = 0.10类似的54.1％ NM CE3 +发射，（5）类似于Tb3 +的类似544nm绿色发射的寿命，稳定地从类似于9.17至4.09毫秒的增加，随着0.05至0.30的增加。

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  • 来源
    《Optical Materials》 |2020年第8期|110004.1-110004.6|共6页
  • 作者

    Hao Shuya; Li Xin; Li Ji-Guang;

  • 作者单位

    Northeastern Univ Sch Mat Sci & Engn Key Lab Anisotropy & Texture Mat MOE Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Mat Sci & Engn Key Lab Anisotropy & Texture Mat MOE Shenyang 110819 Liaoning Peoples R China;

    Natl Inst Mat Sci Res Ctr Funct Mat 1-1 Namiki Tsukuba Ibaraki 3050044 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CeF3:Tb; Tartrate; Morphology; Luminescence; Energy transfer;

    机译：CEF3：TB;酒石酸;形态;发光;能量转移;

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