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.
School of Physics, Centre for Research on Adaptive Nanostructures & Nanodevices (CRANN), Trinity College Dublin, University of Dublin, Dublin 2, Ireland.
Sukanta
S
De
Paul J
PJ
King
Mustafa
M
Lotya
Arlene
A
O'Neill
Evelyn M
EM
Doherty
Yenny
Y
Hernandez
Georg S
GS
Duesberg
Jonathan N
JN
Coleman
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