Preparation and Luminescence Properties of CdWO4：Yb3+, Ho3+ Nano-crystals

HAN Song; SONG Bo; LIU Lei; HE Chao; YANG Kui-sheng

doi:10.3788/fgxb20133409.1183

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Preparation and Luminescence Properties of CdWO₄：Yb³⁺, Ho³⁺ Nano-crystals

更新时间：2020-08-12

- Preparation and Luminescence Properties of CdWO₄：Yb³⁺, Ho³⁺ Nano-crystals
- Chinese Journal of Luminescence Vol. 34, Issue 9, Pages: 1183-1187(2013)
- 作者机构：
  
  长春理工大学材料科学与工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133409.1183
  CLC： O482.31
- Received：12 June 2013，
  
  Revised：11 July 2013，
  
  Published：10 September 2013
- 稿件说明：
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韩松, 宋博, 刘磊, 贺超, 杨魁胜. CdWO4：Yb3+,Ho3+纳米晶的制备及发光性能研究[J]. 发光学报, 2013,34(9): 1183-1187

HAN Song, SONG Bo, LIU Lei, HE Chao, YANG Kui-sheng. Preparation and Luminescence Properties of CdWO4：Yb3+, Ho3+ Nano-crystals[J]. Chinese Journal of Luminescence, 2013,34(9): 1183-1187
韩松, 宋博, 刘磊, 贺超, 杨魁胜. CdWO4：Yb3+,Ho3+纳米晶的制备及发光性能研究[J]. 发光学报, 2013,34(9): 1183-1187 DOI： 10.3788/fgxb20133409.1183.

HAN Song, SONG Bo, LIU Lei, HE Chao, YANG Kui-sheng. Preparation and Luminescence Properties of CdWO4：Yb3+, Ho3+ Nano-crystals[J]. Chinese Journal of Luminescence, 2013,34(9): 1183-1187 DOI： 10.3788/fgxb20133409.1183.

摘要

采用水热法制备CdWO

:Yb

纳米晶

运用X射线衍射、扫描电镜和光谱分析对制备样品的结构和发光性能进行了表征。结果表明:CdWO

:Yb

为单斜晶系

平均晶粒尺寸约为29.782 7 nm。用980 nm激光激发样品获得了发射光谱

位于552 nm和659 nm的发射峰分别对应于Ho

离子的

和

的跃迁。根据泵浦功率和发光强度之间的双对数关系可知

552 nm和659 nm的发射均属于双光子过程。稀土离子的浓度对样品的发光强度的影响较大

结果表明:当Yb

:Ho

离子的量比为5:1且Ho

摩尔分数为1.5%时

CdWO

:Yb

纳米晶的上转换发光强度最大。

Abstract

ions co-doped CdWO

nano-crystals were synthesized by hydrothermal method. The characterization and structure of the samples were measured by X-ray powder diffractions (XRD)

field emission scanning electron microscope (ESEM) and fluorescence spectrophotometer. The results show that CdWO

:Yb

is monoclinic crystal system with the mean size of 29.782 7 nm. The emission spectra were obtained when the samples were excited by 980 nm semi-conductor laser. The green (552 nm) and red (659 nm) emission peaks are obviously observed

which are corresponding to the

and

transitions of Ho

ions. According to the relationship between pump power and luminescence intensity

the green and red peaks can be due to the double-photons absorption processes. The concentration of the rare earths could influence the luminescence intensity. The strongest peak was obtained when the mole fraction of Ho

is 1.5% and the ratio of

(Yb

(Ho

)=5:1.

关键词

Keywords

references

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