Thin Solid Films, Vol.415, No.1-2, 206-210, 2002
Influence of film thickness on charge transport of electrodeposited polypyrrole thin films
We report the investigation of charge transport properties of thin electrodeposited polypyrrole (PPy) films. The charge transport in these films is limited by thermionic injection and an expression for thermionic injection into low mobility materials is used to evaluate the energy barrier between electrodes (tin-oxide, Al and Ni) and PPy. Using the same expression, we estimate the positive charge carrier mobility, demonstrating that its value is higher for thinner films.