Abstract
It is essential to understand the formation of the interface and the morphological design of the surface of electrodes and devices to control the structure and adapt the material to different applications. To study the interface, thin films of a PPy/[Sn(dmit)3]2 were electrochemically grown with the aid of a microcell typically used in scanning tunneling microscopy assays. Raman and FTIR spectroscopies showed the effect of dimensionality on those materials, especially on the vibrational modes of dmit ring and on the 75 nm thick PPy/[Sn (dmit)3]2 film, which presents an optimized polymer chain conjunction length and a 20 % greater contribution to the polaron charge carriers. X-ray Photoelectron Spectroscopy (XPS) analyses confirmed the polaron/bipolaron ratio data, allowing us to determine other contributions to the surface charge density. Atomic Force Microscopy (AFM) images show the hybrid thin film's different growth modes and the roughness evolution as a function of the electrochemical signal used in the synthesis.
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