期刊
APPLIED SURFACE SCIENCE
卷 258, 期 22, 页码 8837-8844出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2012.05.101
关键词
Graphene sheets; Amide solvent; Thermal treatment; Transparent conductive film
类别
资金
- Korea Science and Engineering Foundation (KOSEF)
- Korean government (MEST) through the Intelligent Textile System Research Center (ITRC) [R11-2005-065]
- National Research Foundation of Korea [2008-0057549] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
High quality graphene sheets were produced from graphite by liquid phase exfoliation using N-methyl-2-pyrrolidone (NMP) and a subsequent thermal treatment to enhance the exfoliation. The exfoliation was enhanced by treatment with organic solvent and high thermal expansion producing high yields of the high-quality and defect-free graphene sheets. The graphene was successfully deposited on a flexible and transparent polymer film using the vacuum filtration method. SEM images of thin films of graphene treated at 800 degrees C showed uniform structure with no defects commonly found in films made of graphene produced by other techniques. Thin films of graphene prepared at higher temperatures showed superior transmittance and conductivity. The sheet-resistance of the graphene film treated at 800 degrees C was 2.8 x 10(3) k Omega/square with 80% transmittance. (C) 2012 Elsevier B. V. All rights reserved.
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