Journal
JOURNAL OF LUMINESCENCE
Volume 131, Issue 5, Pages 1095-1099Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2011.02.011
Keywords
ZnS; Nanostructures; Synthesis; Self-assemble; Cathodoluminescence
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Here we report the synthesis and characterization of self-assembled highly symmetrical, i.e., two-fold, three-fold, four-fold and multi-fold, ZnS nanostructures through a simple thermal evaporation process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses indicated that the ZnS nanostructures are composed of faceted crystalline ZnS nanorods with a diameter in the range of 200-600 nm and length up to 2 mu m. In addition, all the branched ZnS nanorods have preferential orientation along the [0 0 2] direction of a wurtzite-type hexagonal structure. The cathodoluminescence measurement demonstrated that the ZnS nanostructures have a strong and uniform band-gap emission centered at 337 nm, indicating their good crystallinity and excellent optical property. (C) 2011 Elsevier B.V. All rights reserved.
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