Li-TFSI/t-BP are the most widely employed p-dopants for hole-transporting materials (HTMs) within the state-of-the-art perovskite solar cells (PSCs). The hygroscopicity and migration of these dopants, however, lead to devices with limited stability. To solve this problem, we report here on a diphenyl iodide cation and pentafluorophenyl boric acid anion-based dopant (DIC-PBA) with an oriented interfacial dipole moment as an alternative to Li-TFSI/t-BP. Theoretical and experimental data reveal that DIC-PBA exhibits deep doping of poly[bis(4-phenyl)(2,4,6-triMethylphenyl)aMine] (PTAA) and also creates p-doping of perovskite surface, which originates from ionic interactions-derived dipole arrangement that yields fast interfacial charge transport. The improved intrinsic stability of PSCs originates from the inhibition of dipole moment degeneration on the perovskite surface. Devices prepared with DIC-PBA yielded high efficiency of 22.86%, and the modules (aperture area: 33.2 cm²) efficiency reached 19.13%. Importantly, the storage stability also significantly improved exceeding to 90% after aging 1,200 h under air ambient.

Li-TFSI/ t -BP 是最先进的钙钛矿太阳能电池 (PSC) 中空穴传输材料 (HTM) 中使用最广泛的 p 型掺杂剂。然而，这些掺杂剂的吸湿性和迁移性导致器件稳定性有限。为了解决这个问题，我们在此报告了一种具有定向界面偶极矩的二苯基碘化物阳离子和五氟苯基硼酸阴离子基掺杂剂 (DIC-PBA) 作为 Li-TFSI/ t的替代品-BP。理论和实验数据表明，DIC-PBA 表现出聚[双（4-苯基）（2,4,6-三甲基苯基）胺]（PTAA）的深度掺杂，并且还产生了源自离子相互作用的钙钛矿表面的 p 型掺杂-衍生的偶极排列，产生快速的界面电荷传输。PSCs内在稳定性的提高源于钙钛矿表面偶极矩退化的抑制。采用DIC-PBA制备的器件效率高达22.86%，模块（孔径面积：33.2 cm ²）效率达到19.13%。重要的是，在空气环境下老化 1,200 小时后，储存稳定性也显着提高至 90% 以上。