六角相NaYF4纳米粒子的合成及粒子尺寸对Tb3+,Er3+下转换效率的影响

王鹏程; 刘春旭; 赵海峰; 骆永石; 王立军

doi:10.3788/fgxb20123310.1068

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六角相NaYF₄纳米粒子的合成及粒子尺寸对Tb³⁺,Er³⁺下转换效率的影响

材料合成及性能研究 | 更新时间：2020-08-12

- 六角相NaYF₄纳米粒子的合成及粒子尺寸对Tb³⁺,Er³⁺下转换效率的影响
- Synthesis of Hexagonal NaYF₄ Nanoparticles and Its Particle Size Effect on Conversion Efficiency of Tb³⁺,Er³⁺ Couples
- 发光学报 2012年33卷第10期页码：1068-1073
- 作者机构：
  
  1. 发光学及应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春,130033
  2. 中国科学院大学北京,100049
- 作者简介：
- 基金信息：
  
  国家自然科学基金(61077025,10904140,10774142,60308008)资助项目()
- DOI：10.3788/fgxb20123310.1068
  中图分类号： O482.31
- 纸质出版日期：2012-10-10，
  
  收稿日期：2012-6-1，
  
  修回日期：2012-6-25，
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王鹏程, 刘春旭, 赵海峰, 骆永石, 王立军. 六角相NaYF4纳米粒子的合成及粒子尺寸对Tb3+,Er3+下转换效率的影响[J]. 发光学报, 2012,(10): 1068-1073

WANG Peng-cheng, LIU Chun-xu, ZHAO Hai-feng, LUO Yong-shi, WANG Li-jun. Synthesis of Hexagonal NaYF4 Nanoparticles and Its Particle Size Effect on Conversion Efficiency of Tb3+,Er3+ Couples[J]. Chinese Journal of Luminescence, 2012,(10): 1068-1073
王鹏程, 刘春旭, 赵海峰, 骆永石, 王立军. 六角相NaYF4纳米粒子的合成及粒子尺寸对Tb3+,Er3+下转换效率的影响[J]. 发光学报, 2012,(10): 1068-1073 DOI： 10.3788/fgxb20123310.1068.

WANG Peng-cheng, LIU Chun-xu, ZHAO Hai-feng, LUO Yong-shi, WANG Li-jun. Synthesis of Hexagonal NaYF4 Nanoparticles and Its Particle Size Effect on Conversion Efficiency of Tb3+,Er3+ Couples[J]. Chinese Journal of Luminescence, 2012,(10): 1068-1073 DOI： 10.3788/fgxb20123310.1068.

摘要

采用热溶剂法制备了NaYF

:Tb

六角相纳米粒子

分析了合成条件对六角相粒子形成的影响。较高的反应温度有利于六角相NaYF

晶体的形成。实验结果表明:六角相是热力学更稳定和更有序的结构

从立方相到六角相的转变是从无序到有序结构的转变。随着尺寸的减小

纳米粒子的下转换效率明显降低。为进一步比较

制备了NaYF

:Tb

核壳结构的纳米粒子。包覆后的纳米粒子的下转换效率明显提高

其原因是包覆减少了表面缺陷进而降低了表面激发能量的猝灭。

Abstract

Nanoparticles NaYF

:Tb

with hexagonal phase were synthesized by hot solvent method and the influences of synthesis conditions on the formation and size of particles were also analyzed.The reaction temperature is the dominate condition.The results confirm that some conclusions that the hexagonal phase is thermodynamically more stable and a more orderly structure.It is found that with the nano-size decreasing

the conversion efficiency is significantly reduced.NaYF

:Tb

nanoparticles with core/shell structure were prepared to analyze and compare further.It is indicated that the luminescence of the NaYF

:Tb

particles with core/shell structure were enhanced significantly due to the reduced surface defects and the suppressed excitation energy quench.

关键词

六角相纳米粒子尺寸核壳结构转换效率

Keywords

hexagonal phasenanoparticle sizecore/shell structureconversion efficiency

references

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