Synthesis of CdS and ZnS nanowires using single-source molecular precursors
Synthesis of CdS and ZnS nanowires using single-source molecular precursors
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DOI：
10.1021/ja036990g
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发表时间：
2003-09-24
影响因子：
15
通讯作者：
Lieber, CM
中科院分区：
文献类型：
--
作者：
Barrelet, CJ;Wu, Y;Lieber, CM
首次利用单源分子前驱体合成了II−VI化合物半导体纳米线。以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为前驱体，采用金纳米团簇催化气-液-固生长工艺制备了硫化镉和硫化锌纳米线。高分辨率透射电镜研究表明，CdS和ZnS纳米线是具有化学计量成分的单晶纤锌矿结构。此外，光致发光测量表明，这些纳米线具有高质量的光学特性。讨论了该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。
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.