Luminescent Properties of Er3+and Er3+ /Yb3+ Doped Nanocrystalline CaWO4

ZHOU Yuan-hang; LU Shu-chen

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Luminescent Properties of Er³⁺and Er³⁺ /Yb³⁺ Doped Nanocrystalline CaWO₄

paper | 更新时间：2020-08-12

- Luminescent Properties of Er³⁺and Er³⁺ /Yb³⁺ Doped Nanocrystalline CaWO₄
- Chinese Journal of Luminescence Vol. 31, Issue 3, Pages: 378-384(2010)
- 作者机构：
  
  哈尔滨师范大学物理与电子工程学院,黑龙江哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：05 January 2010，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2010，
  
  Published：30 June 2010
- 稿件说明：
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ZHOU Yuan-hang, LU Shu-chen. Luminescent Properties of Er³⁺and Er³⁺ /Yb³⁺ Doped Nanocrystalline CaWO₄[J]. Chinese journal of luminescence, 2010, 31(3): 378-384.
DOI：

ZHOU Yuan-hang, LU Shu-chen. Luminescent Properties of Er³⁺and Er³⁺ /Yb³⁺ Doped Nanocrystalline CaWO₄[J]. Chinese journal of luminescence, 2010, 31(3): 378-384. DOI：

摘要

利用共沉淀法制备了Er

掺杂及Er

/Yb

共掺杂纳米晶CaWO

发光粉体

室温下观察到Er

的下转换和上转换特征发射。研究了不同煅烧温度、不同掺杂浓度对Er

离子特征发射的影响。结果表明:随着煅烧温度的升高

发射强度增强;掺杂浓度的改变

导致了Er

的浓度猝灭现象

其适宜的掺杂原子数分数为0.6%。同时观测到O-W的电荷迁移态与稀土离子之间的能量传递现象

并给出了能量传递的模型。对Er

的上转换研究观察到:在976 nm激光激发下Yb

对Er

的上转换发射起到了很好的敏化作用

两个Yb

同时将能量以共振方式传递给一个Er

离子

、Yb

共掺杂样品的绿光上转换过程展示了双光子过程。

Abstract

Both Er

and Er

-Yb

codoped CaWO

nanocrystalline were prepared by chemical co-precipita-tion method. We characted the crystal structures and the room temperature down-conversion emission and up-conversion emission properties of samples with different doping concentrations of Er

and sintered at different temperatures

respectively. By comparing the influence of different sintering temperatures and doped concentrations on the characteristic emission of Er

it was found that the emission intensity depends on the sintering temperature. The emission intensity increases as the sintering temperature increasing. The effect of the concentration of doped Er

on the fluorescence emission intensity shows that the optimum concentration for the luminescence of Er

is 0.6％. The energy transfer was observed between the charge transfer state of O-W and the rare earth ion Er

and a model for explaining the energy transfer was given. By studing the upconversion emission of Er

it was showed that the Yb

can promote the upconversion emission of Er

under 976 nm excitation by the resonance energy transfer.

关键词

Keywords

references

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