Preparation of Nanocrystalline Gd2(WO4)3∶Eu3+,Sm3+ and The Sensitization of Sm3+ to Eu3+ Characteristic Emission

HE Dong-li; LYU Shu-chen; QU Xiu-rong; MAO Jin-wei; MENG Qing-yu

doi:10.3788/fgxb20133402.0171

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Preparation of Nanocrystalline Gd₂(WO₄)₃∶Eu³⁺,Sm³⁺ and The Sensitization of Sm³⁺ to Eu³⁺ Characteristic Emission

paper | 更新时间：2020-08-12

- Preparation of Nanocrystalline Gd₂(WO₄)₃∶Eu³⁺,Sm³⁺ and The Sensitization of Sm³⁺ to Eu³⁺ Characteristic Emission
- Chinese Journal of Luminescence Vol. 34, Issue 2, Pages: 171-177(2013)
- 作者机构：
  
  哈尔滨师范大学光电带隙材料省部共建教育部重点实验室,黑龙江哈尔滨,150025
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133402.0171
  CLC： O482.31
- Received：01 November 2012，
  
  Revised：12 December 2012，
  
  Published：10 February 2013
- 稿件说明：
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何冬丽, 吕树臣, 曲秀荣, 毛金伟, 孟庆裕. Gd2 (WO4)3∶Eu3+,Sm3+纳米晶的制备及Sm3+对Eu3+特征发射的敏化作用[J]. 发光学报, 2013,34(2): 171-177

HE Dong-li, LYU Shu-chen, QU Xiu-rong, MAO Jin-wei, MENG Qing-yu. Preparation of Nanocrystalline Gd2(WO4)3∶Eu3+,Sm3+ and The Sensitization of Sm3+ to Eu3+ Characteristic Emission[J]. Chinese Journal of Luminescence, 2013,34(2): 171-177
何冬丽, 吕树臣, 曲秀荣, 毛金伟, 孟庆裕. Gd2 (WO4)3∶Eu3+,Sm3+纳米晶的制备及Sm3+对Eu3+特征发射的敏化作用[J]. 发光学报, 2013,34(2): 171-177 DOI： 10.3788/fgxb20133402.0171.

HE Dong-li, LYU Shu-chen, QU Xiu-rong, MAO Jin-wei, MENG Qing-yu. Preparation of Nanocrystalline Gd2(WO4)3∶Eu3+,Sm3+ and The Sensitization of Sm3+ to Eu3+ Characteristic Emission[J]. Chinese Journal of Luminescence, 2013,34(2): 171-177 DOI： 10.3788/fgxb20133402.0171.

摘要

采用共沉淀法分别制备了Eu

、Sm

单掺和共掺Gd

(WO

)

纳米发光材料

对所制备的纳米发光材料的结构和发光特性进行了研究。结果表明:所得样品为Gd

(WO

)

的底心单斜结构

的摩尔分数为20%时

(WO

)

∶20%Eu

的发光最强。Sm

对Eu

有敏化作用

使Eu

的

发射明显增强。用464 nm的光激发时

对Eu

的敏化作用强于用395 nm的光激发。 Sm

的摩尔分数为5%时

样品Gd

(WO

)

∶20%Eu

5%Sm

的

发射强度最大。 Sm

的掺入使监测Eu

的

跃迁的激发光谱强度明显增大

且拓宽了可被LED有效激发的波长范围。在405 nm和440 nm波长的光激发下

也可以明显观察到样品Gd

(WO

)

∶20%Eu

5%Sm

中Eu

的

跃迁。

Abstract

doped and co-doped Gd

(WO

)

nanocrystalline powders were prepared by chemical co-precipitation method

respectively. The structure and luminescent properties of nanocrystalline Gd

(WO

)

∶Eu

and Gd

(WO

)

∶Eu

were studied by using XRD and fluorescence spectrophotometer. The results show that the crystal phase of the samples as prepared is base centered monoclinic structure. When the mole fraction of Eu

is 20%

the luminescent intensity of Eu

is the greatest. Sm

sensitized Eu

in the samples Gd

(WO

)

∶Eu

. The sensitized effect of Sm

on Eu

was more obvious when the sample Gd

(WO

)

∶Eu

was excited by 464 nm light than by 395 nm light. Sm

can realize the energy transfer from Sm

to Eu

making the emission of

more strength. When the mole fraction of Sm

was 5%

the luminescent intensity of the sample Gd

(WO

)

∶20%Eu

5%Sm

was the greatest. The transition of

was clearly observed under 405 nm or 440 nm excitation. Therefore

and Sm

co-doped in the matrix Gd

(WO

)

greatly expanded the range of the wavelength of the excitation light source.

关键词

Keywords

references

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