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 CaWO<sub>4</sub> Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process[J]. Chinese Journal of Luminescence, 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 CaWO<sub>4</sub> Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process[J]. Chinese Journal of Luminescence, 2008,29(2): 279-282DOI:
Synthesis and Properties of CaWO4 Nanocrystals for X-ray Intensifying Screen by Pechini Sol-gel Process
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.
关键词
Pechini溶胶-凝胶法X射线增感屏用荧光粉CaWO4
Keywords
Penichi sol-gel processnano-sized phosphor for X-ray intensifying screensCaWO4
references
Xu Xurong,Su Mianzeng.Luminescence and Luminescent Material[M].Beijing:Chemical Industry Press,2004,473-478.
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.
Lou Zhidong,Michael Cocivera.Cathodoluminescence of CaWO4 and SrWO4 thin films prepared by spray pyrolysis[J].Materials Research Bulletin,2002,37(9):1573-1582.
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).