Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

A novel white-emitting phosphor ZnWO4:Dy3+

Author:
ZHAI, Yongqing   LI, Xuan   LIU, Jia   JIANG, Man  


Journal:
Journal of Rare Earths


Issue Date:
2015


Abstract(summary):

Abstract

A new white luminescent material Dy3+ doped ZnWO4 was synthesized by hydrothermal route followed by calcining process. The phase structure, morphology and luminescent properties of as-synthesized samples were characterized by X-ray diffraction, scanning electron microscopy and fluorescence spectrophotometry, respectively. The results indicated that the sample was pure ZnWO4:Dy3+ only when the pH value of the reaction system was 6. The ZnWO4:Dy3+ sample was composed of spherical particles, and the particle size was about 80–130 nm. The excitation spectrum consisted of a broad band ascribed to the charge transfer transition from oxygen ligand to tungsten ion. The emission spectrum of ZnWO4:Dy3+ was composed of two major parts: the broad band attributing to the intrinsic emission of WO42– and the 4F9/26H15/2 transition of Dy3+, and the sharp emission peak corresponding to the 4F9/26H13/2 transition of Dy3+. The optimal emission intensity of the Zn1–xWO4:Dy3+x phosphors was realized when x=1.5 mol.%. Moreover, all of the Zn1–xWO4:Dy3+x (x=0.5 mol.%, 1 mol.%, 1.5 mol.%, 2 mol.%) phosphors could exhibit white light emission, which could be potentially applied in white lighting-emitting diodes.

Emission spectra of Zn1–xWO4:Dy3+x (x=0.5 mol.%, 1 mol.%, 1.5 mol.%, 2 mol.%) phosphors



Page:
350-354


Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads