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Graphenes Converted from Polymers

Title
Graphenes Converted from Polymers
Authors
Byun, SJHyunseob LimGa-Young ShinHan, THOh, SHJong-Hyun AhnChoi, HCLee, TW
POSTECH Authors
Oh, SHChoi, HCLee, TW
Date Issued
Mar-2011
Publisher
AMER CHEMICAL SOC
Abstract
Because the direct formation of large, patterned graphene layers on active electronic devices without any physical transfer process is an ultimate important research goal for practical applications, we first developed a cost-effective, scalable, and sustainable process to form graphene films from solution-processed common polymers directly on a SiO2/Si substrate. We obtained few-layer graphene by heating the thin polymer films covered with a metal capping layer in a high-temperature furnace under low vacuum in an Ar/H-2 atmosphere. We find that the metal capping layer appears to have two functions: prevention of vaporization of dissociated molecules and catalysis of graphene formation. We suggest that polymer-derived graphene growth directly on inert substrates in active electronic devices will have great advantages because of its simple, inexpensive, and safer process.
Keywords
CHEMICAL-VAPOR-DEPOSITION; LARGE-AREA; CARBON; FILMS; GROWTH; COPPER; LAYERS
URI
http://oasis.postech.ac.kr/handle/2014.oak/17538
DOI
10.1021/JZ200001G
ISSN
1948-7185
Article Type
Article
Citation
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 2, no. 5, page. 493 - 497, 2011-03
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 LEE, TAE WOO
Dept of Materials Science & Enginrg
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