• 文献标题:   Noncatalytic synthesis of carbon nanotubes, graphene and graphite on SiC
  • 文献类型:   Article
  • 作  者:   CAMBAZ ZG, YUSHIN G, OSSWALD S, MOCHALIN V, GOYOTSI Y
  • 作者关键词:  
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:   Drexel Univ
  • 被引频次:   90
  • DOI:   10.1016/j.carbon.2008.02.013
  • 出版年:   2008

▎ 摘  要

Graphene and carbon nanotubes (CNT) can be produced by vacuum decomposition of Sic, but discrepancies and conflicting data in the literature limit the use of this method for CNT synthesis. A systematic study of the effects of Sic surface morphology and carbon transport through the gas phase leads to reproducible and controlled growth of arrays of small-diameter (1-4 walls) nanotubes, which show pronounced radial breathing modes in Raman spectra, on either carbon (000 (1) over bar) or silicon (0001) face of 6H Sic wafers at 1400-1900 degrees C. These nanotube arrays have a very high density and are catalyst-free with no internal closures. They show a higher oxidation resistance compared to CNTs produced by catalytic chemical vapor deposition (CVD). Their integration with graphite/graphene or silica layers on Sic wafers is possible in a simple 2-step process and opens new horizons in nanoscale device fabrication. (C) 2008 Elsevier Ltd. All rights reserved.