Barrelet Carl J, Wu Yue, Bell David C, Lieber Charles M
Department of Chemistry, Harvard University, Cambridge, Massachusetts 02138, USA.
J Am Chem Soc. 2003 Sep 24;125(38):11498-9. doi: 10.1021/ja036990g.
Single-source molecular precursors were used to synthesize II-VI compound semiconductor nanowires for the first time. Cadmium sulfide and zinc sulfide nanowires were prepared using cadmium diethyldithiocarbamate, Cd(S2CNEt2)2, and zinc diethyldithiocarbamate, Zn(S2CNEt2)2, respectively, as precursors in a gold nanocluster-catalyzed vapor-liquid-solid growth process. High-resolution transmission electron microscopy studies show that the CdS and ZnS nanowires are single-crystal wurtzite structures with stoichiometric compositions. In addition, photoluminescence measurements demonstrate that these nanowires exhibit high-quality optical properties. The applicability of our approach to the synthesis of other compound and alloy semiconductors nanowires as well as nanowire heterostructures of these materials is discussed.
首次使用单源分子前驱体来合成II-VI族化合物半导体纳米线。在金纳米团簇催化的气-液-固生长过程中，分别使用二乙基二硫代氨基甲酸镉（Cd(S2CNEt2)2）和二乙基二硫代氨基甲酸锌（Zn(S2CNEt2)2）作为前驱体来制备硫化镉和硫化锌纳米线。高分辨率透射电子显微镜研究表明，硫化镉和硫化锌纳米线是具有化学计量组成的单晶纤锌矿结构。此外，光致发光测量表明这些纳米线具有高质量的光学性质。还讨论了我们的方法在合成其他化合物和合金半导体纳米线以及这些材料的纳米线异质结构方面的适用性。
