Numerical Study Of Ag@CH₃NH₃PbI₃ Plasmon Effect To Enhance The Performance Of Perovskite Solar Cells

The research of perovskite solar cells has gradually became one of the hotspots,many scientists in the world are paying attention to it.Since 2009,the photoelectric conversion efficiency?PCE?of organic/inorganic halide perovskite solar cells has increased from 3.8%to 23.3%.The high performance of perovskite solar cells depends on its main component Pb,however,which was unfriendly to the environmental protection,and the toxicity problems were unavoidable during the manufacturing,application and post-processing of the equipment.In addition,perovskite solar cells usually undergo degradation reactions when it was exposed to ultraviolet radiation or contact with water,therefore,it was very important to minimize the contents of Pb.In this paper,without affecting the absorption rate and photoelectric conversion efficiency,the thickness of the perovskite photosensitive layer was reduced,which could reduce the toxicity and improve the environmental protection of perovskite solar cells.The surface of Ag nanoparticle structure has plasmon resonance characteristics,which was beneficial to improve the performance of new solar cells of organic/inorganic halide perovskite.the properties are analyzed and studied by using COMSOL mutiphysics multiphysics simulation software,which included studying of the effect of Ag@CH₃NH₃Pb I₃nanoparticle plasmon on the performance of enhanced perovskite solar thin film cells.By regulating the radius and the spacing of Ag nanoparticles,the influence of the radius of the Ag nanoparticles and the distance between the particles on the PCE was calculated.In addition,the energy enhancement of the photosensitive layer was explained and the electric field distribution was illustrated in this article.According to the computer simulation,the optimized result could be observed,which the Ag nanoparticle array and the thickness and intensity of perovskite photosensitive layer.And By calculation,the ratio of the ideal shape of each nanoparticle to the energy density of the original photosensitive layer reached75.5%,which provides theoretical guidance for the preparation of efficient and stable perovskite solar cells.