Abstract：
:Current etching routes to process large graphene sheets into nanoscale graphene so as to open up a bandgap tend to produce structures with rough and disordered edges. This leads to detrimental electron scattering and reduces carrier mobility. In this work, we present a novel yet simple direct-growth strategy to yield graphene nanomesh (GNM) on a patterned Cu foil via nanosphere lithography. Raman spectroscopy and TEM characterizations show that the as-grown GNM has significantly smoother edges than post-growth etched GNM. More importantly, the transistors based on as-grown GNM with neck widths of 65-75 nm have a near 3-fold higher mobility than those derived from etched GNM with the similar neck widths.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang M,Fu L,Gan L,Zhang C,Rümmeli M,Bachmatiuk A,Huang K,Fang Y,Liu Zdoi
10.1038/srep01238subject
Has Abstractpub_date
2013-01-01 00:00:00pages
1238issn
2045-2322journal_volume
3pub_type
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