"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Luminescence property of Y-doped ZnWO4 powders

H. Y. HE1,*

Affiliation

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

Abstract

Y-doped ZnWO4 powders have been synthesized by reaction between ZnCl2 , Y(NO3)3 and Na2WO4 aqueous solutions and following calcinations. XRD analysis indicated that the average particle size and intensity of XRD peaks of the powders were vary with calcining schedules. SEM micrograph indicated that powders had uniform grain size about 20-500 nm, which increases with increasing calcining temperature and time. Compared with the ZnWO4 powders prepared with same method, Y-doped ZnWO4 powders show less crystallinity and grain size and more dispersive morphology. The luminescence experiments indicated that the powders show a similar broad blue-green emission bands compared to the ZnWO4 powder. The luminescence intensity of the Y-doped powders is nearly equal to that of undoped powders at calcining temperature of 500o C for 1h, and decreases with increasing crystallinity and grain size, as opposite to the ZnWO4 powders. The Y-doped powders with less grain size and more dispersive morphology are more suitable for applications.

Keywords

Y-doped ZnWO4, Powders, Synthesis, Luminescence, XRD.

Citation

H. Y. HE, Luminescence property of Y-doped ZnWO4 powders, Optoelectronics and Advanced Materials - Rapid Communications, 2, 7, July 2008, pp.405-409 (2008).

Submitted at: June 15, 2008

Accepted at: July 8, 2008