Donghuan Qin et al 2006 Nanotechnology 17 674 doi:10.1088/0957-4484/17/3/010
Donghuan Qin, Jianwei Zhou, Chan Luo, Yanshan Liu, Lili Han and Yong Cao1
Show affiliationsA general approach is presented for the controlled synthesis of large-scale Se/Te alloy nanowires (NWs) with sodium dodecylbenzene sulfonate (SDBS) as surfactant. It is found that SDBS acting as surfactant plays an important role in controlling the morphology of Se/Te products. The diameter of Se/Te NWs can be successfully controlled by changing the concentration of SDBS surfactant agents and by adjusting the dynamics of the reaction process. Uniform Se/Te nanoparticles (NCs) can be partly self-assembled into two-dimensional arrays when the SDBS concentration is up to 1.5 wt%. The reaction temperature and concentration of Se6+ and Te6+ in starting materials are also important parameters influencing the morphologies and phases of the final products. Phase structures, morphologies and optical properties of the Se/Te products are investigated by XRD, TEM, HRTEM and UV absorption spectroscopy. The formation mechanisms of the NWs and NCs are investigated and discussed on the basis of the experimental results.
81.05.Cy Elemental semiconductors
81.07.-b Nanoscale materials and structures: fabrication and characterization
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Soft matter, liquids and polymers
Nanoscale science and low-D systems
Issue 3 (14 February 2006)
Received 6 August 2005, in final form 22 October 2005
Published 6 January 2006
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