Effects of Alkali Metal Ions on Upconversion of Rare Earth Doped Fluorides

YANG Run-bai; LI Yi; XU Nan; LI Jian-wei

doi:10.3788/fgxb20194001.0001

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Effects of Alkali Metal Ions on Upconversion of Rare Earth Doped Fluorides

Synthesis and Properties of Materials | 更新时间：2020-08-12

- Effects of Alkali Metal Ions on Upconversion of Rare Earth Doped Fluorides
- Chinese Journal of Luminescence Vol. 40, Issue 1, Pages: 1-8(2019)
- 作者机构：
  
  1. 陕西能源职业技术学院,陕西咸阳,712000
  2. 中国计量科学研究院北京,100027
  3. 陕西省计量科学研究院,陕西西安,710065
- 作者简介：
- 基金信息：
  
  Supported by National Key RD Program of China(2018YFF0212105)
- DOI：10.3788/fgxb20194001.0001
  CLC： O482.31
- Received：04 April 2018，
  
  Revised：26 June 2018，
  
  Published Online：26 July 2018，
  
  Published：05 January 2019
- 稿件说明：
移动端阅览
杨润柏, 李奕, 徐楠等. 碱金属离子对稀土掺杂氟化物上转换荧光的影响[J]. 发光学报, 2019,40(1): 1-8

YANG Run-bai, LI Yi, XU Nan etc. Effects of Alkali Metal Ions on Upconversion of Rare Earth Doped Fluorides[J]. Chinese Journal of Luminescence, 2019,40(1): 1-8
杨润柏, 李奕, 徐楠等. 碱金属离子对稀土掺杂氟化物上转换荧光的影响[J]. 发光学报, 2019,40(1): 1-8 DOI： 10.3788/fgxb20194001.0001.

YANG Run-bai, LI Yi, XU Nan etc. Effects of Alkali Metal Ions on Upconversion of Rare Earth Doped Fluorides[J]. Chinese Journal of Luminescence, 2019,40(1): 1-8 DOI： 10.3788/fgxb20194001.0001.

摘要

提高稀土掺杂材料的上转换荧光效率具有重大的应用价值。本文通过水热法合成了不同种类的碱金属离子掺杂氟化物上转换荧光材料，通过对比样品上转换荧光特性研究其中碱金属离子的作用。发现锂离子能够明显改善稀土掺杂NaYF

的上转换荧光强度，并在稀土掺杂LiYF

中实现了比常用的NaYF

中强近7倍的上转换荧光发射。此外，在具有较高上转换效率的LiYF

基质中通过浓度优化，合成了具有高效白光上转换发射的荧光粉，其CIE坐标值为（0.32，0.36）。本项工作将对高效稀土掺杂上转换材料及照明器件的构建提供一定的参考。

Abstract

It remains a challenge for enhancing the limited upconversion efficiency of rare earth doped materials

which restricts their applications severely. In this paper

we synthesized alkali metal ions and rare earth ions co-doped fluorides using hydrothermal method

the upconversion properties were investigated as well. By comparing the upconversion spectra

effects of the doping alkali metal ions were discussed. It is found that doping Li

can significantly enhance the upconversion intensity of rare earth doped NaYF

nanocrystals

a nearly 7 times stronger emission was achieved in LiYF

host than that in NaYF

. In addition

efficient white light emission was obtained in rare earth doped LiYF

matrix (CIE coordinates

=0.32

=0.36)

after optimizing the doping concentrations. This work provides references for fabricating the highly efficient upconversion materials

as well as the new generation lighting devices.

关键词

Keywords

references

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