Optical absorption performance of (C₄H₉NH₃)₂(CH₃NH₃)₃Pb₄I₁₃-based two-dimensional perovskite solar cells with periodic nanostructure

Abstract

Two-dimensional layered metal-halide perovskites possess exceptional electronic and optical properties along with remarkable stability, making them a highly promising class of organic-inorganic hybrid semiconductor materials. Owing to their multi-quantum-well structure and high refractive index, effective light management is crucial for optimizing the performance of two-dimensional perovskites. This study utilizes the trapping effect of periodic nanostructures to effectively modulate the light-absorption capacity of two-dimensional perovskites. The theoretical efficiency of two-dimensional perovskite solar cells is systematically analyzed using the finite-difference time-domain method, with a particular focus on the influences of the lattice arrangement, structural morphology, and geometric parameters. Furthermore, the underlying mechanism of light management by periodic nanostructures in two-dimensional perovskites is elucidated, and the structure-property relationship between nanostructures and light-absorption performance is estabished. These findings offer crucial theoretical insights that can guide the enhancement of the performance of perovskite photovoltaic devices.

Keywords

light management / two-dimensional perovskite / periodic nanostructure / light absorption

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