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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Hydrothermal Synthesis of CaWO4:Dy3+x Microcrystallines and their Luminescent Properties
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1309-1312)
Author(s): Yan-yan Wei, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Xin Lai, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Jian Bi, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Chan-juan Liu, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Yi Luo, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Yang Li, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Dao-jiang Gao, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Dun-min Lin, College of Chemistry and Materials Science,Sichuan Normal University, Chengdu,China 610066
Abstract: CaWO4:Dy3+ x solid solution microcrystallines were synthesized by hydrothermal method; the crystal structure, surface morphology and room temperature photoluminescence properties of the microcrystallines were investigated by through X-ray diffraction(XRD), scanning electron micrograph(SEM) and fluorescence analysis(FA). Our results show that the CaWO4:Dy3+ x microcrystallines were scheelite structure with tetragonal symmetry. The doping of Dy3+ inhibits the grain growth,decreases the intrinsic emission of WO2- 4 complex ions and enhances the peeks located at 480nm and 575nm of Dy3+ ion, giving the maximum at x =0.01. The abtained CaWO4:Dy3+ 0.01 microcrystalline is a promising phosphor and its grain size is about 4μm.
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