Abstract
In this article, we report the synthesis of branched single crystal CdS nanowires. This branched CdS nanostructure is prepared by a simple surfactant-directing method, which is of particular interest as it uses readily available reagents and provides a convenient route to high-yield single crystal nanowires but with branched shape. These branched nanowires have an average diameter of about 40 nm and length up to several micrometers. A possible mechanism has been proposed and the addition of surfactant dodecylthiol into the two mixed-solvents would play an importance effect on the structure of the product. Based on the mechanism, by controlling the synthesis conditions, such as the ratios between the surfactant, inorganic solvent, and organic solvent, other kinds of nanostructures based on CdS nanowires were also prepared. Photoluminescence (PL) measurement reveals that the branched CdS nanowires have a strong emission at about 700 nm which might be due to its special structure.
Highlights
Nanoscale semiconductors have attracted considerable attention in recent decades in both fundamental researchesQ
Photoluminescence (PL) measurement reveals that the cadmium sulfide (CdS) nanowires have a very strong emission at about 700 nm which might be due to its special structure
It could be seen that the product has a wirelike morphology in a large scale, which confirms the high yield of CdS nanowires
Summary
Nanoscale semiconductors have attracted considerable attention in recent decades in both fundamental researchesQ. Shapes, and crystalline structures are important factors for its intrinsic properties, sufficient controls on these characteristics inevitably become the key issues in the preparation of CdS nanomaterials. Uniform and high aspect ratio CdS nanowires have been synthesized on a large scale by a solvothermal process in a mixed solvent of dodecanethiol and ethylenediamine [28].
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