Performance Research Of High Efficient Perovskite Solar Cell Based On Sub-wavelength Structure Array

As a new type of battery,perovskite solar cell has the advantages of high photoelectric conversion efficiency,simple manufacturing process,low production cost and material cost.Therefore,how to improve the photoelectric conversion efficiency of solar cells is worth studying.Based on the above background,this paper uses the optical module of the finite element analysis software COMSOL Multiphysics to analyze the effect of the subwavelength anti-reflection structure and metal nanostructure on the photoelectric conversion efficiency of perovskite solar cells,and studies the synergistic mechanism of the subwavelength structure array by combining the electric field diagram and effective refractive index.It lays a good foundation for the preparation of efficient solar cells with subwavelength structure array in the future.Firstly,the crystal structure and basic working principle of perovskite solar cells were introduced,and the research status of subwavelength structure array at home and abroad were summarized and analyzed,and then the main research content of this paper was determined.Secondly,the basic steps of the finite element analysis method and the basic flow of the wave optics module of COMSOL Multiphysics software was introduced,which lays the foundation for the establishment and calculation of the next construction model.Furthermore,optimize the parameters of the thickness of each layer of the perovskite solar cell,and combine the thickness of each layer after the optimization to form a planar structure,and add nanocones,columns,inverted cones,mixed nanocones,and biconical nanostructures on the basis of the planar structure as antireflection structure.The light trapping and synergistic mechanism and performance of the above anti-reflective structure are analyzed by COMSOL Multiphysics.Finally,COMSOL Multiphysics is used to optimize the height parameters of the metal nanocone and column structure,compare the performance of the metal nanostructure to determine the best metal nanocolumn structure,and then analyze the influence of the metal nanocolumn structure on the dielectric environment performance,and select the metal nanocolumn structure to be embedded in calcium The middle of the titanium ore layer is the optimal structure.Finally,focusing on the light trapping synergistic mechanism of the anti-reflective structure and the plasma effect of the metal nanostructure,the sub-wavelength anti-reflective structure and the metal nanostructure are combined to form a composite structure,and the composite structure analyzed to discuss the solar performance of the perovskite.