Conductive polymeric matrixsynthesized by chemical and electrochemical methodsand the effect of PbS/Cu₂S nanoparticles added for solar absorbing applications

摘要

This paper reports the synthesis of poly (3 -hexylthiophene) and the PbS/Cu 2 S- poly (3-hexylthiophene) by chemical and electrochemical methods.The characterization by UV-Vis and PL show the interaction between the nanoparticles and the polymeric matrix as an increase in the optical properties in the visible range.The Eg values were calcu lated to be 1.9 and 1.77 eV for the polymer and the composite, respectively. The CV analysis shows the influence of the presence of the nanoparticles in the electrochemical behavior allowing to calculate the HOME and LUMO positions. Nevertheless the IR spectra and the conductivity values suggest that the addition of the nanoparticles to the polymeric film reduces the polymeric chain length and decreases the conductivity value.