Luminescence Properties and Judd-Ofelt Analysis of BaGd2ZnO5:Sm3+ Microcrystalline Powders

ZHU Ting; NIU Chun-hui

doi:10.3788/fgxb20194008.0961

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Luminescence Properties and Judd-Ofelt Analysis of BaGd₂ZnO₅:Sm³⁺ Microcrystalline Powders

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

- Luminescence Properties and Judd-Ofelt Analysis of BaGd₂ZnO₅:Sm³⁺ Microcrystalline Powders
- Chinese Journal of Luminescence Vol. 40, Issue 8, Pages: 961-968(2019)
- 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：
  
  Supported by Natural Science Foundation of Beijing(4154071);Beijing Excellent Tale
- DOI：10.3788/fgxb20194008.0961
  CLC： O482.31
- Received：07 September 2018，
  
  Revised：10 October 2018，
  
  Published Online：15 October 2018，
  
  Published：05 August 2019
- 稿件说明：
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朱婷, 牛春晖,. BaGd2ZnO5:Sm3+微晶粉末发光特性及其Judd-Ofelt分析[J]. 发光学报, 2019,40(8): 961-968

ZHU Ting, NIU Chun-hui,. Luminescence Properties and Judd-Ofelt Analysis of BaGd2ZnO5:Sm3+ Microcrystalline Powders[J]. Chinese Journal of Luminescence, 2019,40(8): 961-968
朱婷, 牛春晖,. BaGd2ZnO5:Sm3+微晶粉末发光特性及其Judd-Ofelt分析[J]. 发光学报, 2019,40(8): 961-968 DOI： 10.3788/fgxb20194008.0961.

ZHU Ting, NIU Chun-hui,. Luminescence Properties and Judd-Ofelt Analysis of BaGd2ZnO5:Sm3+ Microcrystalline Powders[J]. Chinese Journal of Luminescence, 2019,40(8): 961-968 DOI： 10.3788/fgxb20194008.0961.

摘要

使用常规固相法制备了不同Sm

掺杂浓度的BaGd

ZnO

:Sm

的微晶粉末。通过X射线衍射图分析确认所有产物均为纯相BaGd

ZnO

。采用积分球测量微晶粉末的漫反射谱并计算得到其吸收谱，通过吸收谱采用Judd-Ofelt理论计算得到样品的谱线强度参数

（

=2，4，6），从而计算出理论振子强度和实验振子强度，其偏差为

rms

=1.2610

-7

。计算了Sm

的各个能级跃迁的电偶极矩跃迁几率、磁偶极矩跃迁几率、跃迁分支比及能级寿命参数。发现

5/2

能级的寿命较长，为4.82 ms，可用作激光发生过程的上能级；

5/2

到

9/2

和

5/2

到

7/2

的跃迁几率和跃迁分支比明显高于其他跃迁，对应于Sm

发射光谱中610 nm和660 nm处两个强发射峰。测量了发射波长为610 nm的激发光谱，发现了由于Sm

的4f-4f跃迁引起的6个激发峰。另外，测量了410 nm激发下的发射光谱，发现分别在570，610，660 nm处的强发射峰。通过研究3个强发射峰处的发光强度随Sm

的掺杂浓度变化，发现了Sm

发光的浓度猝灭现象。根据能量转移理论的分析结果表明，Sm

离子中的浓度猝灭机制属于偶极-偶极相互作用。CIE颜色坐标的计算结果表明，5个样品的所有坐标都位于橙红区域。

Abstract

BaGd

ZnO

:Sm

microcrystalline powders with different Sm

doping concentrations were prepared by conventional solid phase method. It was confirmed by X-ray diffraction pattern analysis that all the products were pure phase BaGd

ZnO

. The diffuse reflection spectrum of the microcrystalline powder was measured by an integrating sphere and the absorption spectrum was calculated. According to the absorption spectrum

the spectral intensity parameter

(

6) of the sample is calculated

and the theoretical oscillator strength and the experimental oscillator strength are calculated

and the deviation is

rms

=1.2610

-7

. The electric dipole moment transition probability

the magnetic dipole moment transition probability

the transition branch ratio and the energy level lifetime parameters of each energy level transition of Sm

are calculated. It is found that the

5/2

energy level has a long lifetime of 4.82 ms and can be used as the upper energy level of the laser generation process; the transition probability and transition branch ratio of

5/2

9/2

and

5/2

7/2

are significantly higher. For other transitions

they correspond to two strong emission peaks at 610 nm and 660 nm in the Sm

emission spectrum. The excitation spectrum at an emission wavelength of 610 nm was measured

and six excitation peaks due to the 4f-4f transition of Sm

were found. In addition

the emission spectrum at 410 nm excitation was measured

and strong emission peaks at 570

610

660 nm were found

respectively. By studying the luminescence intensity at three strong emission peaks and the doping concentration of Sm

the concentration quenching phenomenon of Sm

luminescence is found. According to the analysis of energy transfer theory

the concentration quenching mechanism in Sm

ions belongs to dipole-dipole interaction. The calculation of the CIE color coordinates shows that all the coordinates of the five samples are in the orange-red region.

关键词

Keywords

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