纳米线
材料科学
异质结
超晶格
光电子学
化学气相沉积
半导体
纳米结构
纳米技术
激光烧蚀
脉冲激光沉积
块(置换群论)
激光器
薄膜
光学
物理
数学
几何学
作者
Yiying Wu,Rong Fan,Peidong Yang
出处
期刊:Nano Letters
[American Chemical Society]
日期:2002-01-19
卷期号:2 (2): 83-86
被引量:968
摘要
Heterojunction and superlattice formation is essential for many potential applications of semiconductor nanowires in nanoscale optoelectronics. We have developed a hybrid pulsed laser ablation/chemical capor deposition (PLA-CVD) process for the synthesis of semiconductor nanowires with longitudinal ordered heterostructures. The laser ablation process generates a programmable pulsed vapor source, which enables the nanowire growth in a block-by-block fashion with a well-defined compositional profile along the wire axis. Single-crystalline nanowires with longitudinal Si/SiGe superlattice structure have been successfully synthesized. This unique class of heterostructured one-dimensional nanostructures holds great potential in applications such as light emitting devices and thermoelectrics.
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