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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 1    February 2006

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Synthesis of single crystalline CdS nanowires with
polyethylene glycol 400 as inducing template
XU Guo-yue(徐国跃), WANG Han(王 函), CHENG Chuan-wei(程传伟),
ZHANG Hai-qian(张海黔), CAO Jie-ming(曹洁明), JI Guang-bin(姬广斌)

Nanomaterials Research Institute, College of Materials Science and Technology,
Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Abstract:Solvothermal technique, an one-step soft solution-processing route was successfully employed to synthesize single crystalline CdS nanowires in ethylenediamine medium at lower temperature (170 ℃) for 1-8 d. In this route, polyethylene glycol 400 (PEG400) was used as surfactant, which played a crucial role in preferentially oriented growth of semiconductor nanowires. Characterizations of as-prepared CdS nanowires by X-ray powder diffraction(XRD), transmission electron microscopy(TEM) indicate that the naonowires, with typical diameters of 20nm and lengths up to several micrometers, have preferential [001] orientation. Also, investigations into the physical properties of the CdS nanowires were conducted with UV-Vis absorption spectroscopy and photoluminescence emission spectroscopy. The excitonic photo-optical phenomena of the nanowires shows the potential in the practical applications.

 

Key words: Ⅱ-Ⅵsemiconductor; cadmium sulfide; nanowires; single crystal; photoluminescence properties

ISSN 1672-7029
CN 43-1423/U

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