Open Access Nano Express

Single Crystalline Cadmium Sulfide Nanowires with Branched Structure

Feng Gao1* and Qingyi Lu2

Author Affiliations

1 Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, People’s Republic of China

2 State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, 210093, People’s Republic of China

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Nanoscale Research Letters 2009, 4:371-376  doi:10.1007/s11671-009-9256-3

Published: 27 January 2009

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.

Keywords:
Cadmium sulfide; Nanowires; Branched single crystal