摘要： The aim of the study was the production of composite nanofibers using the electrospinning methods from a PAN/DMF solutions with PANI, PPy and PT conducting polymers. A scanning electron microscope (SEM) was used in order to carry out an analysis of the morphology a of the resulting nanowires. In order to examine the chemical structure of the composite nanofibers, energy dispersive spectrometry (EDX) and Fourier-Transform Infrared spectroscopy (FTIR) were used. The analysis of the optical properties and the energy band gap of the prepared nanowires was determined by spectral analysis using a UV-Vis spectrophotometer. Using the recorded absorbance spectra determined the banded refractive index n, real n' and imaginary k part of the refractive index as a function of the wavelength, complex dielectric constant ?, real and imaginary part ?r and ?i of the dielectric constant as a function of the wavelength of the obtained nanofibers. The obtained results, which were as follows: energy band gap of 3.77 – 4.08 eV, complex refractive index coefficient values of 1.61 – 2.98 and dielectric constant in the range of 2.58 – 8.87, suggest the possibility to applied of the produced nanomaterials in photovoltaic devices.