Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 406, Issue -, Pages 69-74Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.06.006
Keywords
Functionalized reduced graphene oxide (F-rGO); Stable dispersion; Spin coating; Transparent conductive film (TCF)
Categories
Funding
- TAPSUN Project
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We prepared stable colloidal suspension graphene in aqueous medium by surface modification of graphene with 4-benzenediazonium sulfonate. The sulfonate group on graphene surface interacts with water, exhibits well dispersibility and which prevents the aggregation even at neutral pH. This dispersion shows stability for three months and facile to produce films. Using such a modified graphene dispersion, transparent conductive film (TCF) has been fabricated on glass substrate by spin coating method. At appropriate concentration, the film exhibits an excellent optoelectrical property with resistivity of 1.1 k Omega with the transparency of 89% at the wavelength of 550 nm. Further, we also demonstrated the mechanical, thermal, and optoelectrical properties of prepared films. (C) 2013 Elsevier Inc. All rights reserved.
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