Abstract:
:Large single-crystal graphene is highly desired and important for the applications of graphene in electronics, as grain boundaries between graphene grains markedly degrade its quality and properties. Here we report the growth of millimetre-sized hexagonal single-crystal graphene and graphene films joined from such grains on Pt by ambient-pressure chemical vapour deposition. We report a bubbling method to transfer these single graphene grains and graphene films to arbitrary substrate, which is nondestructive not only to graphene, but also to the Pt substrates. The Pt substrates can be repeatedly used for graphene growth. The graphene shows high crystal quality with the reported lowest wrinkle height of 0.8 nm and a carrier mobility of greater than 7,100 cm(2) V(-1) s(-1) under ambient conditions. The repeatable growth of graphene with large single-crystal grains on Pt and its nondestructive transfer may enable various applications.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Gao L,Ren W,Xu H,Jin L,Wang Z,Ma T,Ma LP,Zhang Z,Fu Q,Peng LM,Bao X,Cheng HMdoi
10.1038/ncomms1702subject
Has Abstractpub_date
2012-02-28 00:00:00pages
699issn
2041-1723pii
ncomms1702journal_volume
3pub_type
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