| With the reduction of traditional energy reserves,clean and renewable solar energy has attracted more and more attention.Thin-film solar cells can convert solar energy into electrical energy and reduce the consumption of traditional energy by power generation,which makes improving the photoelectric conversion efficiency of thin-film solar cells and reducing the cost of materials become a key problem.One of the solutions is to improve the capture ability of the cell for incident light by introducing nanostructures.In this paper,Comsol Multiphysics,which was based on the finite element method,was introduced to research the effect of nano-cone structure on the photovoltaic performance of thin-film silicon solar cells,which laid the foundation for improving the photovoltaic performance of solar cells in the future.Firstly,the basic principle and structure of solar cells were introduced,then the research status of solar cells with nanostructures was analyzed,and the main content of the research was determined.Secondly,the basic steps of the finite element analysis method and the basic flow of the wave optics module of the Comsol Multiphysics software were introduced,which lay the foundation for the establishment and calculation of the next part.Furthermore,by introducing Comsol Multiphysics,three kinds of nano-cone array thin-film silicon solar cells were simulated.The effects of the height,diameter and duty cycle of the nano-cone structure on the photoelectric performance of the cells were studied.The results showed that the performance of the silicon nano-cone array solar cells was the best.The nano-cone and silver nano-hemisphere array were combined to research the photoelectric performance of the four solar cells.The silicon nano-cone and silver nano-hemisphere composite structure array thin-film silicon solar cell had the best photoelectric performance.The mechanism of the composite structure array to improve the photoelectric performance of the cell was analyzed.Finally,the effects of random changes in the height,diameter,and position of the silicon nano-cone array on the photovoltaic performance of the silicon nano-cone and silver nano-hemisphere composite structure array thin-film silicon solar cell were studied.Then,a model of silver nanoparticles modified cavity silicon nano-cone composite structure array solar cell was established by Comsol Multiphysics.The influence of the diameter of the silver nanoparticles and the ratio of the hollow structure to the silicon nano-cone on the photoelectric performance of the solar cell was studied deeply,and the optimal structural parameters of the solar cell were obtained.The principle that the surface-modified silver nanoparticles and silicon nano-cone cavity structures affect the light trapping efficiency of the solar cell was discussed accordingly. |
