▎ 摘　　要

We report the growth of a relatively uniform graphitic carbon film on a nickel (Ni) substrate from the evaporated refined palm oil by thermal chemical vapor deposition employing the so-called flash cooling technique. Raman spectroscopy measurement confirms that the grown thin film contains nanocrystalline graphene clusters. The graphitic carbon thin film with an average thickness of 2 nm shows an optical transmission of 78% at a wavelength of 550 nm, and a sheet resistance of 13 k Omega/sq. The mechanism of the graphene growth on Ni utilizing, the flash cooling technique is discussed by focusing on the possible causes of the highly defective characteristics of the grown film. (C) 2014 The Japan Society of Applied Physics