The hole-transporting material (HTM) plays a crucial role in the performance and stability of perovskite solar cells (PSCs). Ideally, it facilitates lossless charge transfer and suppresses charge recombination and ion migration between the perovskite and electrode. These bulk and interface functionalities require tailored electronic, structural, and chemical properties of the material and film. Here, we report a multifunctional organic HTM T2 based on a thiomethyl-substituted fluorene arm and spiro-[fluorene-9,9′-xanthene] core exhibiting enhanced hole extraction and reduced interface recombination compared with the benchmark HTM spiro-OMeTAD. T2 exhibits strong interactions with adjacent layers, which effectively inhibit interlayer ion migration, leading to enhanced stability. In combination with thermally evaporated perovskite films, power conversion efficiencies of 26.41% (26.21% certified) and 24.88% (certified) have been achieved for 0.1 and 1.0 cm² PSCs. The excellent performance together with a scalable and low-cost synthesis laid a solid foundation for the future large-scale application of PSCs.

空穴传输材料（HTM）在钙钛矿太阳能电池（PSC）的性能和稳定性中起着至关重要的作用。理想情况下，它有助于无损电荷转移并抑制钙钛矿和电极之间的电荷重组和离子迁移。这些本体和界面功能需要材料和薄膜的定制电子、结构和化学特性。在这里，我们报告了一种基于硫甲基取代的芴臂和螺-[芴-9,9'-呫吨]核的多功能有机HTM T2，与基准HTM spiro-OMeTAD相比，其表现出增强的空穴提取和减少的界面复合。 T2与相邻层表现出强烈的相互作用，有效抑制层间离子迁移，从而增强稳定性。与热蒸发钙钛矿薄膜相结合，0.1 和 1.0 cm ² PSC的功率转换效率分别达到 26.41%（26.21% 认证）和 24.88%（认证） 。优异的性能以及可扩展且低成本的合成为PSC的未来大规模应用奠定了坚实的基础。