Yolk–shell structured Bi2SiO5:Yb3+,Ln3+ (Ln = Er, Ho, Tm) upconversion nanophosphors for optical thermometry and solid-state lighting,CrystEngComm

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Yolk–shell structured Bi2SiO5:Yb3+,Ln3+ (Ln = Er, Ho, Tm) upconversion nanophosphors for optical thermometry and solid-state lighting
CrystEngComm ( IF 2.6 ) Pub Date : 2020-05-26 , DOI: 10.1039/d0ce00610f
Dongxun Chen _{1,

2,

3,

4,

5} , Liangliang Zhang _{6,

7,

8,

9,

10} , Yanjie Liang _{1,

2,

3,

4,

5} , Weili Wang _{1,

2,

3,

4,

5} , Shao Yan _{1,

2,

3,

4,

5} , Jianqiang Bi _{1,

2,

3,

4,

5} , Kangning Sun _{1,

2,

3,

4,

5}

Affiliation

Yolk–shell structured Bi₂SiO₅:Yb³⁺,Er³⁺ upconversion nanophosphors have been successfully synthesized via a simple template-assisted route, in which the reaction of Yb³⁺/Er³⁺ co-doped bismuth precursor nanospheres with the silica capping layer in situ is ingeniously designed and controlled. The phase transition and morphology evolution are investigated in detail by X-ray powder diffraction and high-resolution electron microscopy to propose the formation mechanism of the yolk–shell nanostructure. The yielded Bi₂SiO₅:Yb³⁺,Er³⁺ nanophosphors can emit bright green upconversion luminescence under the excitation of a 980 nm laser diode, which enables them to be promising emitters for optoelectronic devices. The potential of the Bi₂SiO₅:Yb³⁺,Er³⁺ nanophosphors as an optical nanothermometer is also demonstrated. The proposed facile synthetic route, unique yolk–shell nanostructure and good upconversion luminescence performance lead the way to access these lanthanide-doped Bi₂SiO₅ nanophosphors for applications in biotechnology and optoelectronic devices.

中文翻译：

卵黄结构的Bi2SiO5：Yb3 +，Ln3 +（Ln = Er，Ho，Tm）上转换纳米荧光粉，用于光学测温和固态照明

卵壳结构的Bi ₂ SiO ₅：Yb ³⁺，Er ³⁺上转换纳米磷光体已通过简单的模板辅助途径成功合成，其中Yb ³⁺ / Er ³⁺共掺杂铋前驱体纳米球与碳纳米管反应。二氧化硅原位覆盖层经过精心设计和控制。通过X射线粉末衍射和高分辨率电子显微镜详细研究了相变和形态演变，以提出卵黄-壳纳米结构的形成机理。生成Bi ₂ SiO ₅：Yb ³⁺，Er ³⁺纳米磷光体在980 nm激光二极管的激发下可以发出亮绿色的上转换发光，这使其成为光电子器件的有希望的发射器。还证明了Bi ₂ SiO ₅：Yb ³⁺，Er ³⁺纳米磷光体作为光学纳米温度计的潜力。提议的简便合成路线，独特的卵黄壳纳米结构和良好的上转换发光性能为获取这些掺杂镧系元素的Bi ₂ SiO ₅纳米磷光体提供了途径，可用于生物技术和光电器件。

更新日期：2020-07-06

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