A new parameter based on graphene for characterizing transparent, conductive materials

Transparent and electro conductive materials are of outstanding importance today Their conductivity and transparency are crucial. Since the absorption of one graphene layer is known to be 2.3% it can be used as a reference material. The conductivity of transparency is introduced and several literature values based on graphene and carbon nanotubes are compared. (C) 2009 Elsevier Ltd. All rights reserved.