Optimization of MAPbI $_3$ -Based Perovskite Solar Cell With Textured Surface

In this article, the optimized condition for a perovskite solar cell (PSC) with textured surface has been calculated. To accurately model the transport in organic material and organic/inorganic interface, the Gaussian-like density of state function was utilized into Poisson and drift-diffusion solver to present the tail states in the organic material. To calibrate the simulation model, the planar structures with published experimental results are compared. Our results show that the textured structure can improve the open-circuit voltage (V $_{\text{oc}}$ ) and fill factor and overcome the major problem of PSC because of the short diffusion length. Finally, the efficiency has been improved from 17.8% (planar) to 20.8% (textured). If the metal contact with a suitable work function is chosen, it can be further improved to 22.9%.