Fast transformation of a rare-earth doped luminescent sub-microcrystal via plasmonic nanoislands,Journal of Materials Chemistry C

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Fast transformation of a rare-earth doped luminescent sub-microcrystal via plasmonic nanoislands
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020/02/14 , DOI: 10.1039/d0tc00060d
Ting Kong _{1,

2,

3,

4} , Chengyun Zhang _{1,

2,

3,

4} , Xuetao Gan _{3,

4,

5,

6} , Fajun Xiao _{3,

4,

5,

6} , Jinping Li _{1,

2,

3,

4} , Zhengkun Fu _{1,

2,

3,

4} , Zhenglong Zhang _{1,

2,

3,

4} , Hairong Zheng _{1,

2,

3,

4}

Affiliation

An efficient and fast transformation scheme for the matrix crystal of rare-earth doped luminescent micro-nanomaterials is developed by using plasmonic gold/silver nanoislands. The transformation is realized through an oxidation reaction from a polycrystalline sub-microcrystal to a single crystal, accompanied by the optimization of the crystal structure and a significant increase in luminescence. The crystal transformation can be achieved in tens of milliseconds, and the rate is controlled not only by the laser illumination power and wavelength, but also by the size and nanogap of nanoislands. Particularly, single crystal transformation is also achieved even at very low temperature, which provides a new way to obtain single crystal materials in a harsh environment. Moreover, the crystal transformation efficiency of the gold plasmonic islands is very stable in air over at least three months. This plasmon driven crystal transformation rapidly provides highly crystalline nanomaterials, which breaks the dependence of high temperature, long period and high energy consumption in the traditional annealing treatment.

中文翻译：

通过等离激元纳米岛快速转变稀土掺杂的发光亚微晶

利用等离激元金/银纳米岛，开发了一种高效，快速的稀土掺杂发光微纳米材料基质晶体转变方案。该转变是通过从多晶亚微晶到单晶的氧化反应实现的，同时伴随着晶体结构的优化和发光的显着增加。可以在数十毫秒内实现晶体转化，并且速率不仅由激光照射功率和波长控制，而且还由纳米岛的大小和纳米间隙控制。特别地，即使在非常低的温度下也能实现单晶转变，这提供了在恶劣环境下获得单晶材料的新途径。此外，金等离激元岛的晶体转化效率在空气中至少三个月内非常稳定。这种由等离激元驱动的晶体转变迅速提供了高度结晶的纳米材料，这打破了传统退火处理中对高温，长时间和高能耗的依赖。

更新日期：2020-04-03

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