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Synthesis and luminescence property of Fe-doped ZnWO4 powders with aqueous solution reaction

H. HE1,* , J. HUANG1, L. CAO1, J. WU1

Affiliation

  1. College of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021 China

Abstract

Fe-doped ZnWO4 powders have been synthesized with low-cost reaction between sodium tungstates and chloride aqueous solutions and following calcinations. The powders were characterized with XRD, SEM, and luminescence analysis. XRD analysis indicated that the powders were a monoclinic sanmartinite. SEM micrograph indicated that powders were of a grain size about 20-500 nm which increased with increasing calcining temperature. The powders exhibit a broad blue-green emission band. The Fe-substitution results in the decrease of the crystallinity, grain size and luminescence intensity, but different character of luminescence band. The deep blue and blue emission appear more intense, and blue-green and yellow-green emission appear weaker, for the Fe-doped powders than for the undoped powders. The experimental results also revealed a red emission near 590-680 nm for the Fe-doped powders.

Keywords

ZnWO4, Fe-doping, Powders, Synthesis, Luminescence, Red emission.

Citation

H. HE, J. HUANG, L. CAO, J. WU, Synthesis and luminescence property of Fe-doped ZnWO4 powders with aqueous solution reaction, Optoelectronics and Advanced Materials - Rapid Communications, 3, 3, March 2009, pp.236-240 (2009).

Submitted at: Feb. 2, 2009

Accepted at: March 19, 2009