Effect of activator distribution on photo- and X-ray excited luminescence properties of ZnS:Cu,Cl phosphors

Journal Article · Tue Jul 01 04:00:00 EDT 2008 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2007.07.021· OSTI ID:21144057

Wendeng, Wang ^[1]; Yujuan, Xia; Anbao, Wang; Jianhua, Yang ^[1]

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1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)

ZnS:Cu,Cl phosphors were prepared by conventional solid state reaction with the aid of NaCl-MgCl{sub 2} flux. The copper activator was introduced into the phosphor precursors by three different methods: co-precipitated with ZnS (CP), wet-coated onto ZnS powders (WC), and simply mixed with ZnS in a mortar (SM). The samples were characterized by X-ray powder diffraction, photoluminescence spectra and X-ray excited luminescence spectra. The results show that both photo- and X-ray excited luminescence intensities of the as-prepared ZnS:Cu,Cl phosphors are in the decreasing order of CP > WC > SM. The different copper activator distribution in the phosphors resulting from the different methods was the main reason responsible for the different luminescence intensity, and uniform distribution is beneficial to the luminescence of the phosphors.

• OSTI ID: 21144057
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 43; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
MAGNESIUM CHLORIDES
MORTARS
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
PRECURSOR
SODIUM CHLORIDES
SPECTRA
TUNGSTEN CARBIDES
X-RAY DIFFRACTION
ZINC SULFIDES