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Rapid chemical vapor deposition of graphene using methanol as a precursor

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(2), pp.307-313
  • DOI : 10.1007/s42823-020-00166-6
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : April 22, 2020
  • Accepted : July 11, 2020
  • Published : April 1, 2021

Lee Imbok 1 Nam Jungtae 2 Park Sang Jun 1 Bae Dong Jae 1 Hong Suklyun 1 Kim Keun Soo 1

1Sejong University
2한국과학기술연구원 탄소융합소재연구소

Accredited

ABSTRACT

In this study, graphene was rapidly grown by chemical vapor deposition using a liquid cell for supplying methanol as a carbon source of graphene. To realize the rapid growth, methanol which is carbon-contained organic solvent was used instead of methane gas, a widely used carbon source for graphene growth. The graphene grown with the growth time as a variable was transferred to a SiO2/Si substrate with an oxide thickness of 300 nm to confirm whether it was grown with full coverage with an optical microscope. The results confirmed a full coverage in 0.5 min of growth. The Raman spectra also confirmed the G-peak position at 1585.0 cm−1 and an intensity ratio of 2D/G at 2.3 or higher. Concerning electrical transport characteristics, at an induced carrier density of 1 × 1012 cm−2, the hole (µh) and electron (µe) mobilities were 1524 cm2 V−1 s−1 and 1528 cm2 V−1 s−1, respectively. Thus, our study confirmed that high-quality, large-area graphene can be grown within 0.5 min.

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