• 文献标题:   Multilayer graphene/amorphous carbon hybrid films prepared by microwave surface-wave plasma CVD: synthesis and characterization
  • 文献类型:   Article
  • 作  者:   ICHIMURA S, HAYASHI Y, UMENO M
  • 作者关键词:   hybrid carbon film, microwave surfacewave plasma cvd, graphene, amorphous carbon, raman, transmission electron microscopy tem
  • 出版物名称:   SURFACE INTERFACE ANALYSIS
  • ISSN:   0142-2421 EI 1096-9918
  • 通讯作者地址:   Okayama Univ
  • 被引频次:   3
  • DOI:   10.1002/sia.6133
  • 出版年:   2017

▎ 摘  要

Hybrid films of multilayer graphene (MG) containing amorphous carbon (a-C) were synthesized on Al substrates by microwave surface-wave plasma chemical vapor deposition. Raman scattering and surface transmission electron microscopy showed that the carbon films contained a large quantity of MG when a radio frequency (RF) substrate bias was not applied. Amorphization of graphene in the carbon film was promoted by applying an RF bias, which generated Ar+ in the plasma. The bandgaps of the films were found to increase as the Raman intensity ratios between the 2D-band (at 2700cm(-1)) and D-band (at 1350cm(-1)) decreased, indicating the formation of a-C. The MG/a-C all-sp(2) phase of carbon hybrid films exhibited an increase in current density under 5mW/cm(2) of AM1.5G solar simulated irradiation as the RF bias increased because of Ar+-induced amorphization of the graphene. Copyright (c) 2016 John Wiley & Sons, Ltd.