The Preparation Of Noble Metal Nano-Array And Its Spectral Characteristics

Nanotechnology is one of the key of information science in twenty-first century and will play a decisive role for the development of science and technology in the future. The production of nanoscale microstructure is an important part of the nanotechnology field. Nanoparticles, nanowires or nanotubes are the basic units in nano-material which is constructed by physical or chemical methods in two-or three-dimensional space. In nano-material the highly ordered nano-array has a bright development prospect. Besides that nano-array has ordinary optical, magnetic and thermal properties just like disordered nano-marerial, for the reason of its outstanding quantum effect nano-array exhibit excellent function more much. The control of nano-array structure’s function is easily achieved by an external electromagnetic field, thus making it the basis of nano microdevices design. For the popular problem of the solar effective use, the highly oriented nano-dot-array can improve the efficiency of solar cell and has important research value. At the same time, ordered nano-material has been applied in many areas, like perpendicular magnetic recording, microelectrode beam, optoelectronic components, lubrication, and sensor and so on.Focusing on the development prospect of the ordered nano-array, through the insight analysis of the various current preparation technology of nano-array, several methods for the preparation of noble metal nano-array have been proposed in the paper. Besides, the feasibility theoretical discussion and experimental have been studied. Mainly as follow:1. Researching the noble metal nano-array preparation, a new preparation using ordinary laser standing wave as deposition source has been studied. The nano-wire-array on a quartz plate in aqueous solution of sliver nanoparticles has been achieved by the ordinary laser standing field in experiment.2. A new preparation using evanescent standing wave field as deposition source has been studied. The distribution of the light force field has been deduced and makes simulation of deposition results by using Matlab theoretically. At last the nano-wire-array on a designed glass rectangular stage in aqueous solution of sliver 3. nanoparticles has been achieved by the evanescent standing field in experiment.4. Researching the noble metal nano-array preparation, a new micro nano-structure preparation on periodically poled lithium niobate has been studied. The method uses periodically poled lithium niobate as deposition plate. The distributed ferroelectric domain on the surface attract the silver nanoparticles in solution under UV irradiartion and the concentration distribution of particles on the surface changes and lead to the formation of micro nano-structure. The experiment has been done to validate the correctness of method.5. Based on enhanced absorption effect of noble nano-array, a new thin film solar cell coated with a layer of silver nano pill array which can improve the solar energy incident rate in a certain wavelength range has been designed. The electromagnetic field distribution, energy flow distribution and normalized absorbed power under different incident wavelength have been simulated to describe the solar cell’s energy distribution and analysis the enhanced absorption of silver pill nano-array.