Optical properties of extended inverted pyramids arrays for enhanced light absorption in silicon solar cells simulated with Comsol Multiphysics

Surface texturization plays a pivotal role in enhancing the efficiency of silicon solar cells by optimizing light absorption. Among various structures, extended inverted pyramids have emerged as a promising way due to their pyramidal pore structures. In this study, we employed 3D finite element simulations using the Comsol Multiphysics software with the Ray Optics module to investigate the optical characteristics of extended inverted pyramids texturization. Through systematic variations in pore depth, we identified a pore depth of 35 μm as optimal for enhanced infrared absorptance. Our simulations revealed consistent absorptance levels exceeding 96% across a broad spectrum in the range of 300 nm to 1200 nm, showcasing the potential of this texturization in improving the efficiency of silicon solar cells. Comparative analyses with alternative texturization techniques underscored the superior performance. Furthermore, accurate computation of lateral scattering effects proved to be essential in estimating absorptance with precision. While our findings highlight the promising attributes of this texturization, experimental validation is warranted to ascertain its practical feasibility. Overall, our study contributes valuable insights into advancing surface texturization techniques for enhancing the performance of silicon solar cells.