Preparation And Characterization Of Aligned Carbon Nanotubes And Inorganic-Organic Photoreceptor

In this thesis, AAO (aluminum anodic oxide) template was prepared under a controllable way, to control the diameter and depth of nanopore columns on AAO film. Catalyst was electro-deposited into the bottom of the pores. Carbon nanotubes can be produced from these catalysts along the pores using CVD method. So, carbon nanotubes were normal to the substrate own to the confinement of these pores. When the condition of electro-deposition was changed, the distribution of cobalt in the bottom is changed to be several separate grains but only one. The carbon nanotubes from these catalysts were a very bamboo-shaped, with a narrow distribution of the diameter, but much smaller than that of pores.When the carbon nanotubes grew out of the pores, their alignment was lost gradually without the confinement of pores. Sonication treatment was adopted to cut the carbon nanotubes out of the template. The results showed that the top of carbon nanotubes would be shortened gradually and the aligned carbon nanotubes could be got again. Another way was used to obtain smooth surface of aligned carbon nanotubes, in which the bottom near to substrate aluminum was converted to the surface as a working face.The single-wall carbon nanotubes (SWNT) bonded with dodecylamine groups were obtained by chemical modification. The modified SWNT showed improved solubility in organic solvents and miscibility with polymer materials. The photoconductivity of oxotitanium phthalocyanine (TiOPc) doped with modified SWNT was investigated by the xerographic photoinduced discharge method. The results showed that the photosensitivity of the dual-layer photoreceptor(P/R) with modified SWNT/TiOPc composites as charge generation materials was higher than that with pristine TiOPc, and increased with increasing the content of modified SWNT in the composites. The best optimal performance was obtained when the weight ratio of doped SWNT was 5%, nearly 2.5 times higher than that of pristine TiOPc at the 570nm wavelength. The efficiency of charge carrier separation increased as well due to the photoinduced charge transfer from TiOPc to SWNT, which might contributes to the improved photosensitivity of the modified SWNT/TiOPc composites.