Enhancement of NaErF4 Nanostructure Upconversion Luminescence with K+ Doping

ZHANG Mei-ling; ZHOU Jin; ZHANG Li; LI Qi-qing; TU Lang-ping; XUE Bin; ZHAO Hui-ying; SHI Z

doi:10.3788/fgxb20183907.0903

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Enhancement of NaErF₄ Nanostructure Upconversion Luminescence with K⁺ Doping

更新时间：2020-08-12

- Enhancement of NaErF₄ Nanostructure Upconversion Luminescence with K⁺ Doping
- Chinese Journal of Luminescence Vol. 39, Issue 7, Pages: 903-908(2018)
- 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
  3. 吉林大学, 吉林长春 130012
  4. 中国科学院化学研究所北京,100080
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(61575194,11474278,11504371
- DOI：10.3788/fgxb20183907.0903
  CLC： O482.31
- Received：14 September 2017，
  
  Revised：12 October 2017，
  
  Published Online：07 November 2017，
  
  Published：05 July 2018
- 稿件说明：
移动端阅览
张美玲, 周进, 张俐等. K离子掺杂增强NaErF4体系上转换发光[J]. 发光学报, 2018,39(7): 903-908

ZHANG Mei-ling, ZHOU Jin, ZHANG Li etc. Enhancement of NaErF4 Nanostructure Upconversion Luminescence with K+ Doping[J]. Chinese Journal of Luminescence, 2018,39(7): 903-908
张美玲, 周进, 张俐等. K离子掺杂增强NaErF4体系上转换发光[J]. 发光学报, 2018,39(7): 903-908 DOI： 10.3788/fgxb20183907.0903.

ZHANG Mei-ling, ZHOU Jin, ZHANG Li etc. Enhancement of NaErF4 Nanostructure Upconversion Luminescence with K+ Doping[J]. Chinese Journal of Luminescence, 2018,39(7): 903-908 DOI： 10.3788/fgxb20183907.0903.

摘要

制备了一系列Na

ErF

@NaLuF

的核壳纳米结构，核中K

掺杂摩尔分数变化范围为0%~8%。XRD分析结果揭示这些具有不同K掺杂浓度的纳米粒子均为-相纳米结构。研究结果表明：随着K

浓度的增加，纳米结构中Er

~650 nm处的红带发光强度呈现先增强后减弱的规律，当K

摩尔分数为4%时，Na

0.96

0.04

ErF

@NaLuF

纳米晶的发光强度达到最大，为未掺杂K

的NaErF

@NaLuF

纳米晶发光强度的3.7倍。其发光增强的原因在于K

的掺杂降低了Er

微环境晶场宇称对称性，提高了Er

离子

9/2

5/2

能级辐射跃迁几率，进而增强了Er

的650 nm红带的上转换发光强度。

Abstract

The nanostructures composing of Na

ErF

@NaLuF

core@shell were synthetized with 0%-8% K

doping mole fraction in the cores. XRD results reveal that all of the nanoparticles are the hexagonal structure. The research results show that the intensity of UCL at~650 nm increases at first and then decreases with K

concentration under 980 nm excitation. The intensity is enhanced 3.7 times with 4% K

doping

compared with that of NaErF

@NaLuF

core@shell without K

doping. Furthermore

the slopes of relationship between UCL intensity and pumping power are from 1.91 to 1.76

for the two nanostructures undoped and doped with 4% K

respectively. Our results suggest that the strategy of K

doping in NaErF

@NaLuF

nanoparticles is an efficient solution to improve the luminescence efficiency of NaErF

@NaLuF

nanosystem.

关键词

Keywords

references

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