Optical Properties Of Branched Nanorod Arrays Based On ZnO Nanorods

One dimensional semiconductor nanomaterials have many potential advantages in application of functional devices and photoelectron nano-devices which caught people's attention in recent years. This paper designed branched ZnO nanostructures, branched TiO2-ZnO heterostructures and V doping TiO2 nanorod arrays based on the theories and experimental results of the synthesis of one dimension ZnO nanorods, hoping to improve the electronic transmission performance and light use efficiency. These nanocomposites may have potential application in photovoltaic and ultraviolet light sensors.In order to improve the electronic transport properties, and enhance the absorption of light of materials, branched ZnO nanostructures were synthesized by solution method based on ZnO nanorod arrays depositing with nanocrystalline ZnO seed layer. The size of one dimension ZnO nanorods can be tuned effectively by changing reaction conditions such as reaction time, precursor concentration and additives etc. Branched ZnO nanostructures doping with transition elements Y and Ce can effectively reduce the photo-electron recombination rate and increase transmission properties of the material.In order to effectively capture the incident light, increasing light response range. Branched TiO2-ZnO heterostructures with ZnO nanorods stretching out on top of highly ordered 1D TiO2 nanorod were prepared by hydrothermal method. Studies indicate that TiO2-ZnO heterostructures have good bonding interface and perfect crystallizations. Coronany ZnO nandendrites not only have better visible scattering ability, increasing utilization of light, but also have good electron transfer performance and low internal electron recombination. Highly ordered vanadium-doped TiO2 nanorod arrays were also prepared by hydrothermal method. A relatively modest doping V can inhibit oriented growth of TiO2 nanocrystal, expand the scope of spectral response of TiO2 nanorods, improve electron transport property and reduce recombination of photogenerated electronic-hole.