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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Tunable morphologies, multicolor properties and applications of RE3+ doped NaY(MoO4)(2) nanocrystals via a facile ligand-assisted reprecipitation process
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Tunable morphologies, multicolor properties and applications of RE3+ doped NaY(MoO4)(2) nanocrystals via a facile ligand-assisted reprecipitation process

机译：通过容易配体辅助再沉淀工艺进行可调谐形态，多色特性和Re3 +掺杂Nay（MOO4）（2）纳米晶体的应用

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摘要

Rare earth (RE3+)-doped NaY(MoO4)(2) nanocrystals are efficient materials for realizing multicolor emission, which plays an important role in displays, W-LEDs, solar cells and biolabeling. Up to now, research on the multicolor tuning properties of RE3+-doped NaY(MoO4)(2) nanoparticles has mostly focused on traditional preparation routes such as the hydrothermal method and sol-gel process. However, the products obtained using these methods are usually large in size (on the micron/submicron scale) and agglomeration problems are inevitable. With the development of nano optoelectronic devices and bioluminescence labeling, there is an urgent need to find an efficient method to prepare nanoscale, monodispersed and NaY(MoO4)(2):RE3+ nanocrystals (NCs) with good crystallinity and stronger emission properties. In this work, we demonstrate a simple, fast, reproducible and one-step synthesis of NaY(MoO4)(2):Eu3+ NCs with sizes varying from 1-20 nm via a ligand-assisted reprecipitation strategy. The reaction mechanism and emission intensities of NaY(MoO4)(2):Eu3+ NCs with various morphologies have been discussed in detail. Furthermore, Tb3+ and Eu3+ ion co-doped NaY(MoO4)(2) NCs were also prepared, and various emission colors were obtained and tuned from red, orange-red, yellow and yellow-green to green. Energy transfer between the Tb3+ and Eu3+ ions in the NaY(MoO4)(2) host matrix has also been demonstrated. Finally, a highly efficient and stable NaY(MoO4)(2):0.05Tb,0.04Eu NC-based W-LED device was built, which indicates the promising future application for this material in the field of lighting. The tunable multicolour emission, ease of preparation and nanosize reveal that NaY(MoO4)(2):RE3+ NCs have a potential application in full color displays and W-LEDs.
机译：稀土（RE3 +） - 掺杂的NaY（的MoO 4）（2）纳米晶体是用于实现多色发光，其在显示了重要的作用，W-发光二极管，太阳能电池和生物标记有效材料。截至目前，对RE3 +的多色调谐特性研究掺杂的NaY（的MoO 4）（2）纳米颗粒已主要集中在传统的制备途径诸如水热法和溶胶 - 凝胶工艺。然而，使用这些方法获得的产品通常尺寸大（在微米/亚微米尺度）和结块的问题是不可避免的。随着纳米光电子器件和生物发光标记的发展，目前迫切需要找到一种有效的方法来制备纳米级，单分散和的NaY（的MoO 4）（2）：RE3 +纳米晶体（NCS）具有良好的结晶性和更强的发射性质。在这项工作中，我们展示了一个简单，快速，的NaY（的MoO 4）的可再现和一步法合成（2）：Eu3 +的纳米晶与尺寸从1-20纳米经由配体辅助再沉淀策略变化。反应机理和的NaY（的MoO 4）的发射强度（2）：Eu3 +的NC的具有各种形态进行了详细讨论。此外，Tb 3+和Eu +离子共掺杂的NaY（的MoO 4）还制备了（2）NCS，并且获得和从红色，橙色，红色，黄色和黄绿色至绿色调谐各种发射颜色。的Tb 3+和Eu +离子在的NaY（的MoO 4）之间的能量转移（2）基质也被证明。最后，一个高效稳定的NaY（的MoO 4）（2）：0.05Tb，0.04Eu NC-W系LED装置建，这表明该材料在照明领域中的希望的未来应用。可调谐多色发射，易于制备和纳米尺寸的揭示的NaY（的MoO 4）（2）：RE3 + NCS在全色显示器和W-LED的潜在的应用。

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