Nd3+/Yb3+掺杂YNbO4粉末上转换发光特性

任宣玮; 吕勇; 牛春晖; 郎晓萍

doi:10.3788/fgxb20173804.0435

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Nd³⁺/Yb³⁺掺杂YNbO₄粉末上转换发光特性

材料合成及性能 | 更新时间：2020-08-12

- Nd³⁺/Yb³⁺掺杂YNbO₄粉末上转换发光特性
- Up-conversion Luminescence Properties of Nd³⁺/Yb³⁺ Doped YNbO₄ Powder
- 发光学报 2017年38卷第4期页码：435-441
- 作者机构：
  
  北京信息科技大学仪器科学与光电工程学院北京,100192
- 作者简介：
- 基金信息：
  
  北京市自然科学基金（4154071）;北京市优秀人才培养资助青年骨干个人项目（201400002012G105）资助
- DOI：10.3788/fgxb20173804.0435
  中图分类号： O482.31;O614.33
- 纸质出版日期：2017-4-5，
  
  收稿日期：2016-10-21，
  
  修回日期：2016-11-21，
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任宣玮, 吕勇, 牛春晖等. Nd3+/Yb3+掺杂YNbO4粉末上转换发光特性[J]. 发光学报, 2017,38(4): 435-441

REN Xuan-wei, LYU Yong, NIU Chun-hui etc. Up-conversion Luminescence Properties of Nd3+/Yb3+ Doped YNbO4 Powder[J]. Chinese Journal of Luminescence, 2017,38(4): 435-441
任宣玮, 吕勇, 牛春晖等. Nd3+/Yb3+掺杂YNbO4粉末上转换发光特性[J]. 发光学报, 2017,38(4): 435-441 DOI： 10.3788/fgxb20173804.0435.

REN Xuan-wei, LYU Yong, NIU Chun-hui etc. Up-conversion Luminescence Properties of Nd3+/Yb3+ Doped YNbO4 Powder[J]. Chinese Journal of Luminescence, 2017,38(4): 435-441 DOI： 10.3788/fgxb20173804.0435.

摘要

采用高温固相法'以50Nb

-40Y

-2Nd

-8Yb

的量比在1 300℃下制备Nd

/Yb

掺杂YNbO

粉末样品。运用Judd-Ofelt理论研究样品光谱特性。由吸收谱中各吸收峰面积计算得到谱线强度参数

（

=2'4'6）'进而得出理论振子强度及实验振子强度'二者均方根偏差

rms

=1.618；10

-7

。计算了Nd

能级

3/2

（

'=15/2'13/2'11/2'9/2）跃迁几率、跃迁分支比和能级寿命。

3/2

11/2

跃迁分支比最高（56.91%）'对应波长1 062 nm。且亚稳态

3/2

能级寿命较长'为1.435 2 ms'适合作为上转换中间能级。在980 nm半导体激光器激发下'观测到波长为487'541'662 nm上转换发光'分别对应于Nd

的

9/2

、

7/2

9/2

和

7/2

13/2

辐射跃迁。通过样品上转换发射功率与激光器工作电流进行的曲线拟合'得到吸收光子数目依次为2.06'1.99'2.15'确定3个发射峰均对应于双光子吸收。

Abstract

/Yb

doped YNbO

powder sample was prepared with the molar ratios of 50Nb

-40Y

-2Nd

-8Yb

by the high temperature solid state method at 1 300℃. The spectrum property was studied by using Judd-Ofelt theory. The spectral strength parameters

(

6) were computed based on the absorption peak's area of the absorption spectrum. The theoretical oscillator strength and the experimental oscillator strength were calculated according to the spectrum strength parameters

and the root mean square deviation (

rms

) of them was 1.61810

-7

. The parameters such as transition probability

decay branching ratios and level lifetime of Nd

transition

3/2

(

'=15/2

13/2

11/2

9/2) were obtained. The decay branching ratio of

3/2

11/2

(corresponding to the wavelength of 1 062 nm) is the most of 56.91%. The lifetime of metastable level

3/2

is longer of 1.435 2 ms

which is suitable for up-conversion intermediate level. Under the excitation of 980 nm diode laser

the up-conversion luminescence is observed at the wavelength of 487

541 and 662 nm

corresponding to the radiative transitions of Nd

9/2

7/2

9/2

and

7/2

13/2

respectively. The two-photon absorption of three emission peaks is determined by the fitting curve graph of sample up-conversion emission power and the laser working current when the absorption of the photon number in turn is 2.06

1.99 and 2.15.

关键词

Nd3+Yb3+YNbO4粉末光谱特性Judd-Ofelt理论

Keywords

Nd3+Yb3+YNbO4 powderspectroscopic propertiesJudd-Ofelt theory

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