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首页> 外文期刊>Crystal growth & design >Preparation, Growth Mechanism, Upconversion, and Near-Infrared Photoluminescence Properties of Convex-Lens-like NaYF4 Microcrystals Doped with Various Rare Earth Ions Excited at 808 nm
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Preparation, Growth Mechanism, Upconversion, and Near-Infrared Photoluminescence Properties of Convex-Lens-like NaYF4 Microcrystals Doped with Various Rare Earth Ions Excited at 808 nm

机译：凸透镜的Nayf 4 微晶在808nm处激发的各种稀土离子掺杂的凸形透镜的Nayf 4 微晶的制备，生长机理，上转化和近红外光致发光性能

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摘要

Preparation of rare earth ions doped photoluminescence materials with controlled morphology was desired to fulfill the requirement of different applications. In the work, convex-lens-like NaYF_(4) microcrystals doped with various rare earth ions were prepared by adjusting preparation parameters including the reaction time, reaction temperature, NaOH concentration, ratio of oleic acid to 1-octadecene, and types of doping ions. A possible growth mechanism of convex-lens-like NaYF_(4) microcrystals is proposed based on reaction time and temperature-dependent morphology evolution. The formation of micro-convex-lens includes the three processes of NaYF_(4) nanoparticles self-assemble, dissolution–nucleation, and regrowth. Doping ions dependent near-infrared and upconversion luminescence properties of convex-lens-like NaYF_(4) microcrystals were investigated excited at 808 nm. The visible upconversion luminescence was observed in the Er~(3+), Yb~(3+)/Er~(3+), Nd~(3+)/Er~(3+), Nd~(3+)/Yb~(3+)/Er~(3+) doped convex-lens-like NaYF_(4) microcrystals, and near-infrared luminescence was obtained in the Nd~(3+), Nd~(3+)/Er~(3+), Yb~(3+)/Er~(3+), Nd~(3+)/Yb~(3+), Nd~(3+)/Yb~(3+)/Er~(3+) doped NaYF_(4) convex-lens-like NaYF_(4) microcrystals. The Er~(3+), Yb~(3+)/Er~(3+), Nd~(3+)/Er~(3+), Nd~(3+)/Yb~(3+)/Er~(3+) doped convex-lens-like NaYF_(4) microcrystals exhibit various upconversion luminescence mechanisms. The energy transfer of the Er~(3+) → Yb~(3+) and the Nd~(3+) → Er~(3+) was observed in the Yb~(3+)/Er~(3+) and Nd~(3+)/Er~(3+) doped convex-lens-like NaYF_(4) microcrystals, respectively. The upconversion emission of Nd~(3+)/Yb~(3+)/Er~(3+) doped convex-lens-like NaYF_(4) microcrystals is from the energy transfer mechanisms of Nd~(3+) → Yb~(3+) → Er~(3+).
机译：稀土离子的制备需要掺杂具有受控形态的光致发光材料来满足不同应用的要求。在该工作中，通过调节包括反应时间，反应温度，NaOH浓度，油酸比例为1-十八烯的比例，以及掺杂的类型的制备参数制备掺杂有各种稀土离子的凸镜片的NayF_（4）微晶。离子。基于反应时间和温度依赖性形态进化，提出了一种可能的凸状NayF_（4）微晶的可能生长机制。微凸透镜的形成包括NayF_（4）纳米颗粒的三种方法自组装，溶解 - 成核和再生。在808nm下激发掺杂离子依赖性近红外和凸形晶片状NayF_（4）微晶的升高的发光性能。在ER〜（3+），Yb〜（3 +）/ ER〜（3+），Nd〜（3 +）/ ER〜（3+），Nd〜（3 +）/中观察到可见的上转化发光。/ Yb〜（3 +）/ ER〜（3+）掺杂凸透镜状Nayf_（4）微晶，并且在Nd〜（3+）中获得近红外发光，Nd〜（3 +）/ er〜 （3+），YB〜（3 +）/ ER〜（3+），ND〜（3 +）/ YB〜（3+），ND〜（3 +）/ YB〜（3 +）/ ER〜（ 3+）掺杂Nayf_（4）凸透镜状NayF_（4）微晶。 ER〜（3+），YB〜（3 +）/ ER〜（3+），ND〜（3 +）/ ER〜（3+），ND〜（3 +）/ YB〜（3 +）/ ER〜（3+）掺杂凸透镜状Nayf_（4）微晶显示各种上变频机构。在Yb〜（3 +）/ ER〜（3+）中观察到ER〜（3+）→Yb〜（3+）和Nd〜（3+）→ER〜（3+）的能量转移和Nd〜（3 +）/ ER〜（3+）掺杂凸透镜状Nayf_（4）微晶。 Nd〜（3 +）/ Yb〜（3 +）/ ER〜（3+）掺杂凸透镜状Nayf_（4）微晶的上转化发射是Nd〜（3+）→Yb的能量转移机制〜（3+）→ER〜（3+）。

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  • 来源
    《Crystal growth & design》 |2018年第3期|共10页
  • 作者

    Yingjin Ma; Zhengwen Yang; Hailu Zhang; Jianbei Qiu; Zhiguo Song;

  • 作者单位

    College of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China;

    College of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China;

    College of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China;

    College of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China;

    College of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China;

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