Abstract
In this work, we report the synthesis and an optical study of thin films of poli (3-octiltiofeno) (P3OT). Our samples were prepared by the electrochemical technique, cyclic voltammetry. The P3OT films were synthetized on a conductive substrate of fluoride-doped tin oxide (FTO) through the oxidation of the monomer in the electrolytic acetonitrile solution of Tetrafluoroborate of Tetraethylammonium. The thickness of the film produced is dependent on the number of voltammetric cycles. The UV–Vis measurements, as expected, demonstrate the dependence of the intensity of absorption on the thickness of the films. The photoluminescence (PL) spectra of our films show the presence of two different contributions attributed to the quinone and pristine structures. Furthermore, the PL spectra present a contribution associated with vibrational modes (non-radiatives). These optical actives vibrational modes were explained by Raman spectroscopy measurements
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