首页> 外文学位 >Experimental study of microwave assisted CVD growth of carbon nanotubes on silicon wafer using cobalt as a catalyst.
【24h】

Experimental study of microwave assisted CVD growth of carbon nanotubes on silicon wafer using cobalt as a catalyst.

机译:以钴为催化剂的微波辅助在硅片上CVD生长碳纳米管的实验研究。

获取原文
获取原文并翻译 | 示例

摘要

Controlled growth of carbon nanotubes is an important step in the realization of practical nanoscale devices for applications in nanoelectronics, sensors, field emission displays, and microelectro mechanical systems (MEMS), among others. Microwave assisted Chemical Vapor Deposition (CVD) technique has been successfully used to synthesize carbon nanotubes on silicon wafer substrates. Since a transition metal catalyst, such as iron, nickel, cobalt is needed for growth of nanotubes, a thin film of cobalt catalyst (2∼5 nm) is deposited on the silicon wafer substrates using Pulsed Laser Deposition (PLD) technique using an excimer laser (248nm). The CVD process conditions, including growth time, plasma pretreatment time, process gases, and flow rate of carbon source gas (methane) are studied towards obtaining controlled growth of nanotubes. Further, patterned catalyst film is formed by the PLD technique and vertically aligned nanotubes are successfully grown on patterned catalyst film. The carbon nanotubes are characterized using SEM, TEM, AFM and mu-Raman Spectroscopy.
机译:碳纳米管的受控生长是实现用于纳米电子,传感器,场发射显示器和微机电系统(MEMS)等的实用纳米级设备的重要一步。微波辅助化学气相沉积(CVD)技术已成功用于在硅片基板上合成碳纳米管。由于纳米管的生长需要诸如铁,镍,钴之类的过渡金属催化剂,因此使用受激准分子通过脉冲激光沉积(PLD)技术将钴催化剂薄膜(2-5 nm)沉积在硅晶片基板上。激光(248nm)。为了获得受控的纳米管生长,研究了CVD工艺条件,包括生长时间,等离子体预处理时间,工艺气体和碳源气体(甲烷)的流速。此外,通过PLD技术形成图案化的催化剂膜,并且在图案化的催化剂膜上成功地生长了垂直取向的纳米管。使用SEM,TEM,AFM和μ拉曼光谱法对碳纳米管进行表征。

著录项

  • 作者单位

    Oklahoma State University.;

  • 授予单位 Oklahoma State University.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2005
  • 页码 137 p.
  • 总页数 137
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号