Craciun, M.F. (author), Giovannetti, G. (author), Rogge, S. (author), Brocks, G. (author), Morpurgo, A.F. (author), Van den Brink, J. (author) We investigate electronic transport through pentacene thin films intercalated with potassium. From temperature-dependent conductivity measurements we find that potassium-intercalated pentacene shows metallic behavior in a broad range of potassium concentrations. Surprisingly, the conductivity exhibits a re-entrance into an insulating state when...
journal article 2009