X射线增感屏用纳米CaWO4的Pechini溶胶-凝胶法制备及其光学性能

杨志平; 赵金鑫; 李小宁; 刘海燕; 李盼来; 李旭; 刘冲; 杨勇

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X射线增感屏用纳米CaWO₄的Pechini溶胶-凝胶法制备及其光学性能

论文 | 更新时间：2020-08-12

- X射线增感屏用纳米CaWO₄的Pechini溶胶-凝胶法制备及其光学性能
- Synthesis and Properties of CaWO₄ Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process
- 发光学报 2008年29卷第2期页码：279-282
- 作者机构：
  
  1. 河北大学, 物理科学与技术学院,河北保定,071002
  2. 河北大学, 研究生学院,河北保定,071002
  3. 交通部公路科学研究院, 公路交通安全技术交通行业重点实验室北京,100088
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(50472037)()
- DOI：
  中图分类号： O482.31
- 收稿日期：2007-08-25，
  
  修回日期：2007-11-24，
  
  纸质出版日期：2008-03-20
- 稿件说明：
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杨志平, 赵金鑫, 李小宁, 刘海燕, 李盼来, 李旭, 刘冲, 杨勇. X射线增感屏用纳米CaWO4的Pechini溶胶-凝胶法制备及其光学性能[J]. 发光学报, 2008,29(2): 279-282

YANG Zhi-ping, ZHAO Jin-xin, LI Xiao-ning, LIU Hai-yan, LI Pan-lai, LI Xu, LIU Chong, YANG Yong. Synthesis and Properties of CaWO4 Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process[J]. Chinese Journal of Luminescence, 2008,29(2): 279-282
杨志平, 赵金鑫, 李小宁, 刘海燕, 李盼来, 李旭, 刘冲, 杨勇. X射线增感屏用纳米CaWO4的Pechini溶胶-凝胶法制备及其光学性能[J]. 发光学报, 2008,29(2): 279-282 DOI：

YANG Zhi-ping, ZHAO Jin-xin, LI Xiao-ning, LIU Hai-yan, LI Pan-lai, LI Xu, LIU Chong, YANG Yong. Synthesis and Properties of CaWO4 Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process[J]. Chinese Journal of Luminescence, 2008,29(2): 279-282 DOI：

摘要

采用Pechini溶胶-凝胶法制得纳米级CaWO

荧光粉

通过X射线衍射图、扫描电镜和发射光谱对其形貌和发光性能进行了研究

结果表明750℃条件下所得样品为纯相CaWO

晶体

在X射线激发下发射峰位于420nm

与感蓝胶片的光谱灵敏度匹配良好。其粒径在纳米量级且粒度分布集中是该方法所得CaWO

荧光粉的突出优点。将此荧光粉制成X射线增感屏并与市售同类产品相比

该增感屏可使感光片的成像质量显著提高。

Abstract

CaWO

nano-crystal phosphor was prepared by a Pechini sol-gel process. X-ray diffraction

scanning electron microscope and photoluminescence spectra were used to characterize the resulting phosphor powders. The results indicate that the phosphor prepared at 750℃ is with pure lattice phase

its emitting peak is at 420 nm and mainly consists of globose particles with an average grain size of about 100 nm. Compared with commercial X-ray intensifying screen the images of X-ray film matched with this novel intensifying screen have higher contrast and resolution.

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references

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