非稀土掺杂协同核壳包裹对氟化物纳米晶上转换发光性能的增强

马丹阳; 丁明烨; 戴建斌; 胡琪唯; 潘雅静; 李雨亭; 陈大钦; 季振国

doi:10.3788/fgxb20163703.0286

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非稀土掺杂协同核壳包裹对氟化物纳米晶上转换发光性能的增强

材料合成及性能 | 更新时间：2020-08-12

- 非稀土掺杂协同核壳包裹对氟化物纳米晶上转换发光性能的增强
- Enhancment of Upconversion Luminescence of Lanthanide-doped Nanocrystals Through Non-lanthanide Ions Doping Core-shell Nanoarchitecture
- 发光学报 2016年37卷第3期页码：286-293
- 作者机构：
  
  杭州电子科技大学材料与环境工程学院,浙江杭州,310018
- 作者简介：
- 基金信息：
  
  浙江省自然科学基金(LQ15E020004,LR15E020001)();国家自然科学基金(51572065,61372025, 21271170)();2015年浙江
- DOI：10.3788/fgxb20163703.0286
  中图分类号： O482.31
- 纸质出版日期：2016-3-5，
  
  收稿日期：2015-12-6，
  
  修回日期：2016-1-4，
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马丹阳, 丁明烨, 戴建斌等. 非稀土掺杂协同核壳包裹对氟化物纳米晶上转换发光性能的增强[J]. 发光学报, 2016,37(3): 286-293

MA Dan-yang, DING Ming-ye, DAI Jian-bin etc. Enhancment of Upconversion Luminescence of Lanthanide-doped Nanocrystals Through Non-lanthanide Ions Doping Core-shell Nanoarchitecture[J]. Chinese Journal of Luminescence, 2016,37(3): 286-293
马丹阳, 丁明烨, 戴建斌等. 非稀土掺杂协同核壳包裹对氟化物纳米晶上转换发光性能的增强[J]. 发光学报, 2016,37(3): 286-293 DOI： 10.3788/fgxb20163703.0286.

MA Dan-yang, DING Ming-ye, DAI Jian-bin etc. Enhancment of Upconversion Luminescence of Lanthanide-doped Nanocrystals Through Non-lanthanide Ions Doping Core-shell Nanoarchitecture[J]. Chinese Journal of Luminescence, 2016,37(3): 286-293 DOI： 10.3788/fgxb20163703.0286.

摘要

为提高上转换纳米晶的发光效率

提出协同增强的策略

将核壳包裹和非稀土离子掺杂两种方式进行有效的结合

使上转换纳米晶的发光效率实现"1+1

2"的增强效果。以NaGdF

作为基质材料

和Er

分别作为敏化离子和发光离子

以Li

离子和NaGdF

作为非稀土掺杂离子和包裹壳层来构建核/壳纳米结构

研究两种增强方式的协同作用对NaGdF

:Yb

/Er

纳米晶的上转换发光性能的影响。结果表明

离子掺杂与包裹NaGdF

壳层共同作用使得-NaGdF

:Yb

/Er

纳米晶的上转换发光增强了39倍

明显优于单一方式的增强效果。通过一系列的优化实验结果发现

离子的最佳掺杂摩尔分数为4%。基于以上实验结果

给出了非稀土离子掺杂核壳纳米晶协同增强上转换发光效率的机理。

Abstract

In order to improve the luminescence efficiency of upconversion nanocrystals

a new strategy to significantly enhance upconversion emission was proposed based on coupling of non-lanthanide ions doping with the growth of an inert shell. As a proof-of-concept experiment

hexagonal NaGdF

:Yb

/Er

NaGdF

and Li

ions were chosen as luminescent core

inert shell and non-lanthanide ions

respectively. The results demonstrate that significant enhancement of 39 times from -NaGdF

:Yb

/Er

nanocrystals is clearly observed under the synergistic effect

which is larger than the sum of separate enhancement from the Li

doping and growth of an inert shell. By means of a series of experimental studies

the optimal doping mole fraction of Li

ions in the core-shell nanocrystals is found to be about 4%. Moreover

the mechanism for the luminescent enhancement of upconversion nanocrystals has been discussed.

关键词

非稀土离子掺杂核壳包裹&beta-NaGdF4:Yb3+/Er3+上转换发光

Keywords

non-lanthanide ions dopingcore-shell&beta-NaGdF4:Yb3+/Er3+upconversion

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