Patent ID: 8470400

Claim:
A method for synthesizing graphene films, the method comprising: loading a metal or a dielectric on a substrate into a tube furnace or a cold wall chamber; introducing hydrogen gas into said tube furnace or said cold wall chamber; heating said substrate to a temperature between 400° C. and 1,400° C.; maintaining said temperature of said substrate to between 400° C. and 1,400° C. for a duration of time between 0.1 to 60 minutes while said hydrogen gas is flowing into said tube furnace or said cold wall chamber; introducing a first gas from the group consisting of methane, ethylene and acetylene into said tube furnace or said cold wall chamber while reducing a flow rate of said hydrogen gas to less than 10 sccm; and growing graphene from said first gas on said metal or said dielectric following said introduction of said first gas.