Flexible, transparent, conducting films of randomly stacked graphene from surfactant-stabilized, oxide-free graphene dispersions.
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 x 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.
De
Sukanta
S
School of Physics, Centre for Research on Adaptive Nanostructures & Nanodevices (CRANN), Trinity College Dublin, University of Dublin, Dublin 2, Ireland.
King
Paul J
PJ
Lotya
Mustafa
M
O'Neill
Arlene
A
Doherty
Evelyn M
EM
Hernandez
Yenny
Y
Duesberg
Georg S
GS
Coleman
Jonathan N
JN
D004553:Electric Conductivity; D006108:Graphite / Q000737:chemistry*; D055620:Optical Phenomena; D010087:Oxides / Q000737:chemistry*; D018583:Pliability; D011093:Polyethylene Terephthalates; D020358:Sodium Cholate / Q000737:chemistry; D013057:Spectrum Analysis; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D010087:Oxides; D011093:Polyethylene Terephthalates; D013501:Surface-Active Agents; D014867:Water; D006108:Graphite; D020358:Sodium Cholate