Synthesis and Properties of CaWO4 Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process

YANG Zhi-ping; ZHAO Jin-xin; LI Xiao-ning; LIU Hai-yan; LI Pan-lai; LI Xu; LIU Chong; YANG

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Synthesis and Properties of CaWO₄ Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process

更新时间：2020-08-12

- Synthesis and Properties of CaWO₄ Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process
- Chinese Journal of Luminescence Vol. 29, Issue 2, Pages: 279-282(2008)
- 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：
- DOI：
  CLC： O482.31
- Received：25 August 2007，
  
  Revised：24 November 2007，
  
  Published：20 March 2008
- 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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Keywords

references

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Yang Zhiping,Xiong Zhijun,Liu Yufeng,et al.Synthesis of nano-sized phosphor Ca3SiO5:Eu2+ by sol-gel method[J].J.the Chin.Ceramic Society (硅酸盐学报),2007,35(5):546-550 (in Chinese).

Pang M L,Lin J,Yu M.Fabrication and luminescent properties of rare earths-doped Gd2(WO4)3 thin film phosphors by Pechini sol-gel process[J].J.Solid State Chem.,2004,177(7):2237-2241.

Yu Min,Lin Jun,Zhou Yonghui,et al.Synthesis and properties of Sr2CeO4 powder phosphor by the sol-gel method[J].Chin.J.Lumin.(发光学报),2003,24(1):91-94 (in Chinese).

Zhang Guoxin,Jia Runping,Wu Qingsheng.Preparation,structural and optical properties of AWO4(A=Ca,Ba,Sr) nanofilms[J].Materials Science and Engineering B,2006,128(1-3):254-259.

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Zhang Lide,Mou Jimei.Nano-materials and Nano-structures[M].Beijing:Scince Press,2001,147-152.

Cai Shaohua,Dang Hua,Li Yuanying,et al.Synthes is of CaWO4 phosphors with the hydrothermal method[J].Chem.J.Chin.Univ.(高等学校化学学报),1998,19(5):691-693 (in Chinese).

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