NaScF4∶Yb3+/Er3+纳米颗粒荧光温敏特性

相国涛; 杨梦琳; 刘臻; 丁永希; 黄缤瑶; 张羽; 吴洪秀; 胡欢欢

doi:10.37188/CJL.20220064

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NaScF₄∶Yb³⁺/Er³⁺纳米颗粒荧光温敏特性

材料合成及性能 | 更新时间：2022-05-23

- NaScF₄∶Yb³⁺/Er³⁺纳米颗粒荧光温敏特性
  增强出版
- Temperature Sensing Properties in NaScF₄∶Yb³⁺/Er³⁺ Nanoparticles
- 发光学报 2022年43卷第5期页码：684-690
- 作者机构：
  
  重庆邮电大学　理学院，重庆　400065
- 作者简介：
  
  [ "相国涛(1988-)，男，黑龙江佳木斯人，博士，副教授，2016年于中国科学院大学获得博士学位，主要从事稀土上转换发光材料的研究。E-mail: xianggt@cqupt.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(11704054);重庆邮电大学大学生创新创业训练计划(X202110617080)
- DOI：10.37188/CJL.20220064
  中图分类号： O482.31
- 纸质出版日期：2022-05，
  
  收稿日期：2022-02-27，
  
  修回日期：2022-03-15，
- 稿件说明：
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相国涛, 杨梦琳, 刘臻, 等. NaScF₄∶Yb³⁺/Er³⁺纳米颗粒荧光温敏特性[J]. 发光学报, 2022,43(5):684-690.

GUO-TAO XIANG, MENG-LIN YANG, ZHEN LIU, et al. Temperature Sensing Properties in NaScF₄∶Yb³⁺/Er³⁺ Nanoparticles. [J]. Chinese journal of luminescence, 2022, 43(5): 684-690.
相国涛, 杨梦琳, 刘臻, 等. NaScF₄∶Yb³⁺/Er³⁺纳米颗粒荧光温敏特性[J]. 发光学报, 2022,43(5):684-690. DOI： 10.37188/CJL.20220064.

GUO-TAO XIANG, MENG-LIN YANG, ZHEN LIU, et al. Temperature Sensing Properties in NaScF₄∶Yb³⁺/Er³⁺ Nanoparticles. [J]. Chinese journal of luminescence, 2022, 43(5): 684-690. DOI： 10.37188/CJL.20220064.

摘要

利用共沉淀法制备了六角相NaScF

∶20%Yb

/2%Er

纳米颗粒，该纳米颗粒的尺寸约为35 nm且具有较好的分散性。在980 nm激发下，该纳米颗粒可以产生较强的上转换红光发射及较弱的上转换绿光发射，红绿比约为6。与此同时，在纳米颗粒中，Er

热耦合的绿光能级

11/2

与

3/2

具有较好的温度感测特性，利用其荧光强度比可实现较为准确的光学温度测量，最大相对灵敏度约为1.17%·K

-1

。另外，在近红外区，非热耦合的Yb

5/2

→

7/2

跃迁与Er

13/2

→

15/2

跃迁的荧光强度比也表现出较好的光学测温性能，其相对灵敏度随着温度升高而逐渐增大，并在333 K时达到最大值0.73%·K

-1

。以上结果表明，NaScF

∶20%Yb

/2%Er

纳米颗粒是一种高效的上转换红光材料，且在可见区及近红外区均具有较好的光学测温表现。

Abstract

In this paper

NaScF

∶20%Yb

/2%Er

nanoparticles(NPs) with a size of about 35 nm are prepared by a solvothermal process. Under the excitation of 980 nm wavelength

the NPs exhibit strong red upconversion(UC) emission and weak green UC emission. The corresponding intensity ratio of red emission to green emission is approximately 6. Meanwhile

the green and near-infrared(NIR) emission of the UCNPs own excellent temperature sensing performances within the studied temperature range

which can be used for optical thermometry based on fluorescence intensity ratio(FIR) technology. The maximums of relative sensitivity

for thermally coupled

11/2

level and

3/2

level of Er

and non-thermally coupled Yb

3+ 2

5/2

level and Er

3+ 4

13/2

level are 1.17%·K

-1

and 0.73%·K

-1

respectively. The results show that the UCNPs are a kind of high efficient red UC material and show promising temperature sensing performances in visible and NIR region.

关键词

稀土离子纳米颗粒上转换发光光学测温NaScF4

Keywords

rare earthnano particlesupconversionoptical thermometryNaScF4

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