Absorption Enhancement in Organic–Inorganic\nHalide Perovskite Films with Embedded Plasmonic Gold Nanoparticles

Abstract

We report on the\nnumerical analysis of solar absorption enhancement\nin organic–inorganic halide perovskite films embedding plasmonic\ngold nanoparticles. The effect of particle size and concentration\nis analyzed in realistic systems in which random particle location\nwithin the perovskite film and the eventual formation of dimers are\nalso taken into account. We find a maximum integrated solar absorption\nenhancement of ∼10% in perovskite films of 200 nm thickness\nand ∼6% in 300 nm films, with spheres of radii 60 and 90 nm,\nrespectively, in volume concentrations of around 10% in both cases.\nWe show that the presence of dimers boosts the absorption enhancement\nup to ∼12% in the thinnest films considered. Absorption reinforcement\narises from a double contribution of plasmonic near-field and scattering\neffects, whose respective weight can be discriminated and evaluated\nfrom the simulations.