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Zinc oxide (ZnO) with a wide band gap because of (3.37 eV) and high exciton binding energy (60 MeV) , etc. , and become important multifunctional semiconductor materials. ZnO nanoparticles as small size , large surface area , with a series of excellent electrical , optical, magnetic and chemical properties , and by selectively doped ZnO can effectively adjust its optical properties , so that in electrical, optical , biology, medicine , etc. has broad prospects for development. This article was prepared by using electrospinning ZnO and aluminum (Al) -doped ZnO (AZO) nanofiber membrane of Al -doped ZnO on the microstructure and optical properties. On this basis , by poly-3 - dodecylthiophene (PAT12) immersed in a chloroform solution absorption prepared by the method of nano composite film material ZnO/PAT12 studied PAT12 adding of ZnO nano fiber membrane optics, electrical performance. First, the best studied of the electrostatic spinning process system , the ZnO nano- average fiber diameter of about 169nm. The results show , Al -doped ZnO increase the amount of the nanofiber may cause thinning , the grain size decreases , UV absorption and fluorescence spectra of blue shifted enhanced , after the analysis of these phenomena is discussed . In addition, the UV-visible absorption spectra indicate that the increase of Al doping , ZnO band gap increases, the preparation method proved able to control the Al -doped ZnO nanofiber microstructure and physical properties. Study found that the ZnO nano- electro-spun fiber membrane under irradiation with white light photocurrent response . With Al doping (0 at% -3 at%) improved , ZnO nanofiber conductivity first increases and then decreases in white light under the photocurrent response also appeared first increased and then decreased phenomenon, when Al doping amount of 1 at% , the light current is highest intensity attenuation weakest , and non -doped ZnO nanofibers compared photocurrent intensity increased by nearly 100% , the dark current photocurrent of approximately 30 times the expected used in photovoltaic fields. PAT12 and ZnO nano- fiber composite can effectively expand the film spectral absorption range and PAT12 adding can significantly improve the ZnO nanofibers photocurrent response performance , light current intensity increased by about 80% , so the ZnO-based nanofibers of ZnO / PAT12 photoelectric conversion in the field of film material also has potential applications .
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