Abstract
In order to improve the performance of perovskite solar cells, we optimize the contact interface structure between the functional layers, and adjust the thickness of each functional layer. By using COMSOL multi-physics simulation software, we simulate the structure of perovskite solar cells, and verify the influence of the optimized structure on the electrical performance of the cell. The results show that the inverted pyramid structure on the interface of functional layers will affect the photoelectric conversion efficiency. When the inverted pyramid structure is set between the electronic transmission layer and the light absorption layer, the maximum output power density of 27.36 mW/cm<sup>2</sup> can be obtained, the photoelectric conversion efficiency is 27.3%, the corresponding open circuit voltage is 1.19 V, the short circuit current density is 26.64 mA/cm<sup>2</sup>, and the filling factor is 86.19 %. The research results provide structural optimization ideas for further improving the overall performance of perovskite solar cells.
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