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Title: Controllable growth of vertically aligned graphene on C-face SiC

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep34814· OSTI ID:1377529
 [1];  [2];  [3];  [4];  [5];  [5];  [1];  [1];  [6];  [6];  [1];  [1];  [1]
  1. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Institute of Ion Beam Physics and Materials Research
  2. Beijing Information and Technology Univ. (China). Dept. of Basic Science
  3. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Institute of Ion Beam Physics and Materials Research; Dublin Inst. of Technology (Ireland). School of Physics
  4. Sichuan Univ., Chengdu (China). School pf Chemical Engineering
  5. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Institute of Ion Beam Physics and Materials Research; Technische Univ. Dresden (Germany)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)

We investigated how to control the growth of vertically aligned graphene on C-face SiC by varying the processing conditions. It is found that, the growth rate scales with the annealing temperature and the graphene height is proportional to the annealing time. Temperature gradient and crystalline quality of the SiC substrates influence their vaporization. The partial vapor pressure is crucial as it can interfere with further vaporization. A growth mechanism is proposed in terms of physical vapor transport. The monolayer character of vertically aligned graphene is verified by Raman and X-ray absorption spectroscopy. With the processed samples, d0 magnetism is realized and negative magnetoresistance is observed after Cu implantation. We also prove that multiple carriers exist in vertically aligned graphene.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1377529
Journal Information:
Scientific Reports, Vol. 6, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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