Improving light-harvesting conversion efficiency (η) is a major step towards commercializing perovskite solar cells (PSCs). Inverse opals prepared from TiO₂ show enhanced light absorption, and improved efficiency, due to increased light scattering. Besides improving efficiency, the cells are colorful and aesthetically pleasing for use in practical applications. In this study, three-dimensional (3D) highly-porous inverse opals were fabricated for use in PSCs. The light-harvesting efficiency (LHE%) and the photovoltaic performance of these colorful ordered structures were studied for the first time. Moreover, two different architectures are presented by integrating a mesoporous TiO₂ (mp-TiO₂) layer with an optically active two-dimensional TiO₂ film. Herein, we report the highest known power conversion efficiency for bilayer TiO₂/PSCs compared to standard mesoporous TiO₂ films. The data indicate improved incident photon to current conversion efficiency values due to enhanced quantum efficiency in the red range of the electromagnetic spectrum. Other approaches relating to the characteristics of optical properties and photovoltaic performances of different geometries of PSCs are discussed.

提高光捕获转换效率 (η) 是钙钛矿太阳能电池 (PSC) 商业化的重要一步。由于光散射增加，由 TiO ₂制备的反蛋白石显示出增强的光吸收和提高的效率。除了提高效率外，这些电池色彩丰富，美观，可用于实际应用。在这项研究中，制造了用于 PSC 的三维 (3D) 高孔反蛋白石。首次研究了这些彩色有序结构的光捕获效率（LHE%）和光伏性能。此外，通过将介孔 TiO ₂ (mp-TiO ₂ ) 层与光学活性二维 TiO ₂集成，呈现了两种不同的结构电影。在此，我们报告了与标准介孔 TiO ₂薄膜相比双层 TiO ₂ /PSC 的已知最高功率转换效率。数据表明，由于电磁光谱红色范围内的量子效率提高，入射光子到电流的转换效率值得到改善。讨论了与 PSC 不同几何形状的光学特性和光伏性能特征相关的其他方法。