• 专利标题:   Preparation of graphene nanobelt for microelectronic devices, involves injecting silicon ions into silicon carbide, pyrolyzing to form carbon film, depositing nickel film on substrate, placing carbon film on nickel film, and annealing.
  • 专利号:   CN102683183-A, CN102683183-B
  • 发明人:   GUO H, LEI T, ZHANG Y, ZHANG K, ZHANG F, ZHAO Y
  • 专利权人:   UNIV XIDIAN
  • 国际专利分类:   B82Y010/00, C23C014/30, C23C014/48, C23C014/58, H01L021/04
  • 专利详细信息:   CN102683183-A 19 Sep 2012 H01L-021/04 201313 Pages: 6 Chinese
  • 申请详细信息:   CN102683183-A CN10151879 16 May 2012
  • 优先权号:   CN10151879

▎ 摘  要

NOVELTY - A silicon carbide sample is cleaned. An injection region is chosen on the cleaned sample and silicon ions are injected. The sample is put in an epitaxial furnace and heated. The temperature is maintained constant for 30-90 minutes and the sample is pyrolyzed in the injection region to form a carbon film. A nickel film is deposited by electron beam on a silicon substrate. The carbon film is placed on the nickel film, and the carbon film and nickel film are annealed in argon gas to attach carbon film to nickel film on the formed graphene nanobelt. USE - Preparation of graphene nanobelt for use in manufacture of microelectronic devices. ADVANTAGE - The method enables simple and safe preparation of graphene nanobelts at reduced pyrolysis temperature. The obtained graphene nanobelt has excellent surface smoothness and continuity. DETAILED DESCRIPTION - A silicon carbide sample is cleaned to remove surface contaminants. An injection region is chosen on the cleaned sample and silicon ions are injected at a pressure of (0.5-1)x 10-6 Torr, an injection energy of 15-30 keV, and a concentration of 5x 1014-5x 1017 cm-2. The sample is put in an epitaxial furnace and heated to 1200-1300 degrees C. The temperature is maintained constant for 30-90 minutes and the sample is pyrolyzed in the injection region to form a carbon film. A nickel film with a thickness of 350-600 nm is deposited by electron beam on a silicon substrate. The carbon film is placed on the nickel film, and the carbon film and nickel film are placed in argon gas and annealed for 10-20 minutes at 900-1200 degrees C, to attach carbon film to nickel film on the formed graphene nanobelt.