AMPC  Vol.3 No.6 , October 2013
Wet-Chemical Synthesis and Optical Property of ZnSe Nanowires by Ag2Se-Catalyzed Growth Mechanism
ABSTRACT
High-quality II-VI semiconductor ZnSe nanowires were facilely prepared in the oleic acid and oleylamine mixed solution at low temperatures of 130°C-200°C through an Ag2Se-catalyzed growth mechanism. Oleylamine served as an effective reducing agent and a surfactant in the synthesis. Many of the resultant nanowires were terminated by an Ag2Se catalyst particle at one of their ends, confirming that the nanowire growth followed a catalytic mechanism. The crystal structure of Ag2Se catalyst was examined, which exhibited a metastable tetragonal phase, not the common orthorhombic phase. Meanwhile, the optical properties of as-synthesized ZnSe nanowire solid powder were evaluated by the UV-Visible diffuse reflectance and photoluminescence spectroscopy and a significant blue shift was observed compared to the bulk ZnSe with a band gap of 2.7 eV. This work would provide an alternative and effective catalytic route for the preparation of one-dimensional (1D) nanostructures of ZnSe and other metal selenides.

Cite this paper
J. Wang, H. Feng, W. Fan, K. Chen and Q. Yang, "Wet-Chemical Synthesis and Optical Property of ZnSe Nanowires by Ag2Se-Catalyzed Growth Mechanism," Advances in Materials Physics and Chemistry, Vol. 3 No. 6, 2013, pp. 289-294. doi: 10.4236/ampc.2013.36039.
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