Inverted perovskite solar cells (p-i-n PSCs) with nickel oxide (NiO_x) as hole transport layer (HTL) have attracted tremendous attention due to the stable performance and ease of preparation. However, the NiO_x/perovskite interface in the inverted perovskite solar cells (p-i-n PSCs) usually suffers from energy level mismatch, low conductivity, lattice mismatch, existence of surface defects etc., limiting the improvement of power conversion efficiency (PCE) and durability. Fluorine-containing materials have desired interface modification effect and are popular in the bulk and upper interface of perovskite, but rarely appear at NiO_x/perovskite interface to address above issues. Herein, an interfacial modification strategy with a multi-fluorine organic molecule 6FPPY, is proposed to manage the buried interface of NiO_x-based p-i-n PSC. Theoretical calculation and experimental results show that 6FPPY bridges the NiO_x/perovskite interface through moieties with F atoms, producing a NiO_x film with higher hole transport efficiency, releasing the residual strain of perovskite film, passivating the NiO_x/perovskite interface defects, and suppressing the detrimental reaction between NiO_x and perovskite. Consequently, p-i-n PSCs with 6FPPY-modified NiO_x achieve a champion PCE of 24.0%, which is superior to the reference device. After 6FPPY modification, PSC can retain above 90% of the initial PCE after 200 h illumination at maximum power point in N₂ atmosphere and exhibit better stability than the reference device during 1080 h storage under 60% humidity and 30–35 ℃.

以氧化镍 (NiO _x ) 作为空穴传输层 (HTL) 的倒置钙钛矿太阳能电池 (pin PSC) 由于性能稳定且易于制备而备受关注。然而，倒置钙钛矿太阳能电池（pin PSC）中的NiO x /钙钛矿界面通常存在能级失配、低电导率、晶格失配、存在表面缺陷等问题，限制了功率转换效率（PCE）和耐久性的_提高. 含氟材料具有理想的界面改性效果，普遍出现在钙钛矿的块体和上界面，但很少出现在NiO _x/perovskite 接口来解决上述问题。在此，提出了一种使用多氟有机分子 6FPPY 的界面改性策略，以管理基于 NiO _x的 pin PSC 的掩埋界面。理论计算和实验结果表明，6FPPY通过带有F原子的基团桥接NiO _{x /钙钛矿界面，生成具有更高空穴传输效率的NiO x}薄膜，释放钙钛矿薄膜的残余应变，钝化NiO _x /钙钛矿界面缺陷，并且抑制 NiO _x和钙钛矿之间的有害反应。因此，使用 6FPPY 改性的 NiO _{x固定 PSC}实现 24.0% 的冠军 PCE，优于参考设备。_{6FPPY修饰后，在N 2}气氛中最大功率点照射200小时后，PSC可保留初始PCE的90%以上，并且在60%湿度和30-35℃下储存1080小时时表现出比参考器件更好的稳定性。