Upconversion Luminescence and Temperature Characteristics of GdNbO4:Er3+/Yb3+ Phosphors

WU Zhong-li; WU Hong-mei; YAO Zhen; TANG Li-dan; DAI Xiao-chun; GUO Yu

doi:10.3788/fgxb20173809.1129

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Upconversion Luminescence and Temperature Characteristics of GdNbO₄:Er³⁺/Yb³⁺ Phosphors

更新时间：2020-08-12

- Upconversion Luminescence and Temperature Characteristics of GdNbO₄:Er³⁺/Yb³⁺ Phosphors
- Chinese Journal of Luminescence Vol. 38, Issue 9, Pages: 1129-1135(2017)
- 作者机构：
  
  1. 辽宁工业大学化学与环境工程学院,辽宁锦州,121001
  2. 辽宁工业大学机械工程与自动化学院,辽宁锦州,121001
  3. 辽宁工业大学理学院,辽宁锦州,121001
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(21601075,11504150)
- DOI：10.3788/fgxb20173809.1129
  CLC： O482.31
- Received：22 February 2017，
  
  Revised：13 April 2017，
  
  Published Online：22 June 2017，
  
  Published：05 September 2017
- 稿件说明：
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吴中立, 吴红梅, 姚震等. GdNbO4:Er3+/Yb3+荧光粉的上转换发光与温度特性[J]. 发光学报, 2017,38(9): 1129-1135

WU Zhong-li, WU Hong-mei, YAO Zhen etc. Upconversion Luminescence and Temperature Characteristics of GdNbO4:Er3+/Yb3+ Phosphors[J]. Chinese Journal of Luminescence, 2017,38(9): 1129-1135
吴中立, 吴红梅, 姚震等. GdNbO4:Er3+/Yb3+荧光粉的上转换发光与温度特性[J]. 发光学报, 2017,38(9): 1129-1135 DOI： 10.3788/fgxb20173809.1129.

WU Zhong-li, WU Hong-mei, YAO Zhen etc. Upconversion Luminescence and Temperature Characteristics of GdNbO4:Er3+/Yb3+ Phosphors[J]. Chinese Journal of Luminescence, 2017,38(9): 1129-1135 DOI： 10.3788/fgxb20173809.1129.

摘要

采用传统高温固相法制备了GdNbO

：10%Yb

，

%Er

荧光粉。利用XRD对样品的晶体结构进行了分析，结果表明所得的样品为纯相。在980 nm 光纤激光器激发下，测量了样品的上转换发射光谱，实验发现样品发生了浓度猝灭。利用荧光强度比（FIR）方法研究了GdNbO

：Yb

/Er

荧光粉的温度传感特性，结果表明灵敏度随温度的升高先增大后减小。建立了Er

的两个绿色发射能级的温度猝灭物理模型并用其成功解释了样品的绿色上转换发光温度猝灭现象。

Abstract

A series of Er

/Yb

co-doped phosphors with various Er

concentrations were synthesized

via

the conventional high temperature solid state method. The crystal structure of the obtained phosphor was analyzed by means of X-ray diffraction (XRD). The results show that the doping concentration do not evoke the change in crystal structure. The upconversion emission spectra for the phosphors doped with various Er

concentrations were measured upon 980 nm excitation under the same experimental conditions. The results show that the concentration quenching occurs at a higher concentration. The optical temperature sensing properties based on the fluorescence intensity ratio (FIR) method were discussed by analyzing intensities ratio of

11/2

and

3/2

emission with the temperature. It is observed that the sensitivity increases first and then decreases with the increase of temperature

and the sensitivity is the highest at 180℃. A physical model involving radiative/nonradiative transitions and thermal excitation of

11/2

and

3/2

emission is established

and the temperature quenching of the phenomenon is explained successfully.

关键词

Keywords

references

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