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Flexible, Transparent, Conducting Films of Randomly Stacked Graphene from Surfactant‐Stabilized, Oxide‐Free Graphene Dispersions
Author(s) -
De Sukanta,
King Paul J.,
Lotya Mustafa,
O'Neill Arlene,
Doherty Evelyn M.,
Hernandez Yenny,
Duesberg Georg S.,
Coleman Jonathan N.
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200901162
Subject(s) - graphene , materials science , oxide , conductivity , graphene oxide paper , graphite oxide , graphite , pulmonary surfactant , nanotechnology , layer (electronics) , chemical engineering , electrical resistivity and conductivity , thin film , composite material , chemistry , electrical engineering , engineering , metallurgy
Graphite is exfoliated in water to give dispersions of mono‐ and few‐layer graphene stabilized by surfactant. These dispersions can be used to form thin, disordered films of randomly stacked, oxide‐free, few‐layer graphenes. These films are transparent with a direct current conductivity of up to 1.5 × 10 4 S m −1 . The conductivity is stable under flexing for at least 2000 cycles. The electrical properties are limited by disorder and aggregation suggesting future routes for improvement.