▎ 摘　　要

NOVELTY - Metal catalyst is heated (S100) to predetermined temperature (A) under inert gas and hydrogen gas atmosphere. The process is maintained for predetermined time, after increasing temperature with respect to predetermined temperature (A). Then, temperature is decreased, to obtain crystal grain of metal catalyst. The obtained metal catalyst is heated to predetermined temperature (B). Carbon source gas is supplied (S110) for predetermined time, after increasing temperature, and temperature is decreased (S120), to obtain graphene and carbon molecule thin film. USE - Synthesis of graphene and carbon molecule thin film. ADVANTAGE - The method economically and easily provides graphene and carbon molecule thin film. DETAILED DESCRIPTION - Metal catalyst is heated to predetermined temperature (A) under inert gas and hydrogen gas atmosphere. The process is maintained for predetermined time, after increasing temperature with respect to predetermined temperature (A). Then, the temperature is decreased at predetermined temperature fall rate, to obtain crystal grain of metal catalyst. The obtained metal catalyst is heated to predetermined temperature (B) under inert gas and hydrogen gas atmosphere. Carbon source gas is supplied for predetermined time, after increasing temperature with respect to predetermined temperature (B), and temperature is decreased at predetermined temperature fall rate, to obtain graphene and carbon molecule thin film. DESCRIPTION OF DRAWING(S) - The drawing shows the flowchart of synthesis of graphene and carbon molecule thin film. (Drawing includes non-English language text) Step for heating metal catalyst (S100) Step for supplying carbon gas source (S110) Step for decreasing temperature (S120)