Anode interface layers (AILs) are of vital importance to the performance of organic photovoltaics (OPVs). Herein, MAPbBr₃ is firstly demonstrated as an effective solution-processed AIL, featuring a 2.3-eV bandgap and high hole and electron mobility. PM6:BO-4Cl based on unannealed device with the MAPbBr₃ AIL exhibits an encouraging efficiency of 15.5%. F4TCNQ is further doped into MAPbBr₃ to increase work function and passivate defects, boosting the efficiency to 17.3%. Likewise, the unannealed devices based on PM6:BTP-eC9:PC₇₁BM achieved a high efficiency of 18.3% with the MAPbBr₃/F4TCNQ AIL. The ambipolar ability of MAPbBr₃ in OPVs was further proved by inverted devices. Therefore, MAPbBr₃ successfully serves multiple functions: a down-conversion layer, an energy donor, and a textured seeding layer influencing bulk-heterojunction (BHJ) morphology. This finding successfully demonstrates the practicability of wide-bandgap perovskite materials as highly promising OPV interfacial materials.

阳极界面层 (AIL) 对有机光伏 (OPV) 的性能至关重要。在此，MAPbBr ₃首次被证明是一种有效的溶液处理 AIL，具有 2.3-eV 的带隙和高空穴和电子迁移率。PM6:BO-4Cl 基于具有 MAPbBr ₃ AIL 的未退火设备，表现出令人鼓舞的 15.5% 的效率。F4TCNQ 进一步掺杂到 MAPbBr ₃中以增加功函数和钝化缺陷，将效率提高到 17.3%。同样，基于 PM6:BTP-eC9:PC _{71 BM 的未退火器件使用 MAPbBr 3} /F4TCNQ AIL实现了 18.3% 的高效率。MAPbBr _{3的双极性能力}倒置装置进一步证明了 OPV 中的应用。因此，MAPbBr ₃成功地发挥了多种功能：下转换层、能量供体和影响体异质结 (BHJ) 形态的纹理化晶种层。这一发现成功地证明了宽带隙钙钛矿材料作为极具前景的 OPV 界面材料的实用性。