Self-assembled highly symmetrical ZnS nanostructures and their cathodoluminescence |
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Authors: | Baoyu Liu Long Hu Lu Liu Jigong Qi |
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Institution: | a College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, China b School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China |
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Abstract: | 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 μm. 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. |
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Keywords: | ZnS Nanostructures Synthesis Self-assemble Cathodoluminescence |
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