Abstract:A new type of photosensitive hybrid films based on poly (3-hexylthiophene) (P3HT) and multiwall carbon nanotubes (MWCNTs)was effectively developed,with P3HT as electron donor and the MWCNTs as electron acceptor.The resulting P3HT were characterized and investigated by 1H NMR,FTIR,UV-Vis and TEM.The solubility of polythiophene materials was greatly improved with the introduction of hexyl group.And the MWCNTs were chemically modified to improve its compatibility with P3HT.The UV-Vis spectra show that the conjugate effect of P3HT film is relatively higher than its solution.The conjugate effect in the P3HT film increases as its amount of oxidants increasing.The results show that the red-shift phenomenon of P3HT-MWCNTs hybrid films occurs as its MWCNTs content increases,and the solar energy usage improves with the P3HT-MWCNTs hybrid films than pure P3HT film.