Low temperature CVD growth of graphene nano-flakes directly on high K dielectrics

摘要

The potential of MgO and ZrO_2 as catalytically active substrates for graphene formation via thermal CVD is explored. Experimental observations show the growth of single and multilayer graphene nano-flakes over MgO and ZrO_2 at low temperatures. The graphene nano-flakes are found to anchor at step sites. Ab initio calculations indicate step sites are crucial to adsorb and crack acetylene.