Unveiling the Importance of Nondominant Facets in (111)-Dominated Perovskite Films

作者：Bo Zhou, Pei Zhao, Junxue Guo, Shuaifeng Hu, Xin Guo, Jiewei Liu, Can Li · 发表于：ACS Applied Materials & Interfaces · 年份：2025 · DOI：10.1021/acsami.5c01238 · 被引用次数：13 · 研究领域：Perovskite Materials and Applications、Magnetic and transport properties of perovskites and related materials、Thermal Expansion and Ionic Conductivity

While (111)-dominated perovskite films hold the potential for high-stability solar cells, most studies have primarily focused on modulating the (111) facets, overlooking the distribution and formation mechanism of the nondominant (100) facets. In this study, we delve into the (111) orientation via solvent regulation and investigate the evolution of facet distribution using various diffraction techniques. The findings reveal that simply stacking (111) facets does not inherently enhance solar cells. Instead, the distribution of nondominant (100) facets in (111)-dominated films significantly influences both photoelectric property and stability. These observations highlight the critical need to manage the interplay between dominant and nondominant facets. The study further offers strategies for addressing facet heterogeneity to achieve a uniform facet distribution. This research provides a comprehensive framework for understanding (111)-dominated perovskites and offers valuable guidance for designing high-performance perovskite solar cells.