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Synthesis and luminescent property of ZnWO4 powders by aqueous reactions

H. Y. HE1,*

Affiliation

  1. College of materials science and engineering, Shaanxi university of science and technology, China(710021)

Abstract

ZnWO4 powders have been synthesized by reaction between ZnCl2 and Na2WO4 aqueous solutions and following calcinations at final temperature of 700oC. XRD analysis indicated that single phase ZnWO4 powders were formed above calcining temperature of 400oC, the ZnWO4 powders had a monoclinic sanmartinite structure, and particle size and intensity of XRD peak of the powders were change with change of calcining schedules. SEM micrograph indicated that powders had uniform and grain szie about 20-500nm which incresed with increasing calcining temperature. The powders showed a broad blue-green emission bands. Little shift in the peaks of excitation and luminescence and change in its intensities were observed as related to the changes of intensity of XRD peaks and grain size and morphlogy of the powders. The ZnWO4 powders possessed of very high luminescent efficiency..

Keywords

ZnWO4, powders, Synthesis, Luminescence.

Submitted at: Dec. 7, 2007
Accepted at: Feb. 18, 2008

Citation

H. Y. HE, Synthesis and luminescent property of ZnWO4 powders by aqueous reactions, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 2, pp. 451-454 (2008)