Application of conversion coatings to the growth of TTF-TCNQ thin films byCVD and conducting nanowires by dipping process

Thin films of the molecular conductor TTF-TCNQ are grown using chemical vap our deposition (CVD) on stainless steel conversion coating (SSCC) substrate s. The fractal-like morphology and high adsorption properties of SSCC impro ve the surface coverage in CVD-grown thin films. 1 mum thick, oriented, con ductive deposits are obtained and studied by SEM, IR, XRD and conductivity measurements. Additionally, an unexpected ability of SSCC to induced nanowi re formation is shown. By successively dipping SSCC in TTF and TCNQ solutio ns, typically 20 nm x 20 mum conducting wires and ribbons, and occasionally loops, form on the substrates. They could be separated from the surface an d were studied by TEM. AFM and current-voltage measurements. (C) 2000 Acade mie des sciences/Editions scientifiques et medicales Elsevier SAS.