School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 69978, Israel.
Nano Lett. 2012 Mar 14;12(3):1121-8. doi: 10.1021/nl204263k. Epub 2012 Jan 31.
One-dimensional (1D) nanostructures have attracted considerable attention as a result of their exceptional properties and potential applications. Among them, 1D axial heterostructures with well-defined and controlled heterojunctions between different nanomaterials or between different 1D nanostructures (i.e., nanowire-nanotube heterojunctions) have recently become of particular interest as potential building blocks in future high-performance nano-optoelectronic and nanoelectronic devices. Here, we report on the preparation and characterization of crystalline silicon nanowire-nanotube (SiNW-NT) heterostructures with controlled geometry, kinked and unkinked, and composition using germanium-silicon nanowire heterostructures with abrupt heterojunctions (~2 nm wide) as a template via the VLS-CVD mechanism.
一维（1D）纳米结构因其独特的性质和潜在的应用而引起了广泛的关注。其中，具有不同纳米材料之间或不同 1D 纳米结构之间（即纳米线-纳米管异质结）明确和可控的异质结的 1D 轴向异质结构，最近作为未来高性能纳光电和纳米电子器件的潜在构建块引起了特别的关注。在这里，我们报告了使用具有突然异质结（~2nm 宽）的锗硅纳米线异质结构作为模板，通过 VLS-CVD 机制，制备和表征具有可控几何形状、扭结和非扭结以及组成的结晶硅纳米线-纳米管（SiNW-NT）异质结构。
