Synthesis of Y-junction single-wall carbon nanotubes

被引：58

作者：

Choi, YC ^{[1
]}

Choi, WB ^{[1
]}

机构：

[1] Florida Int Univ, Ctr Nanomat & Devices, Dept Mech & Mat Engn, Miami, FL 33174 USA

来源：

CARBON | 2005年 / 43卷 / 13期

关键词：

Y-junction; single-wall carbon nanotubes; Mo-doped Fe particles;

D O I：

10.1016/j.carbon.2005.05.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Y-junction single-wall carbon nanotubes (SWNTs) are synthesized using controlled catalysts by chemical vapor deposition. Mo-doped Fe nanoparticles supported by aluminum oxide particles are used as catalysts for growing Y-junction single-wall carbon nanotubes. Distribution of Mo-doped Fe particles plays an important role in Y-junction formation. Transmission electron microscopy confirmed the formation of single-walled structures of Y-junctions with diameters of 2-5 nm. Radial breathing mode peaks in Raman spectra show that our sample has both metallic and semiconducting nanotubes, indicating the possible formation of Y-branching with different electrical properties. The different electrical properties of branch and stem can be utilized in nanoscale three terminal electronic devices. The growth mechanism of Y-junction SWNTs is proposed. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2737 / 2741

页数：5

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