Currently, highly efficient n-i-p perovskite solar cells rely on an organic interface layer for high efficiency, especially 2,2′,7,7′-tetrakis [N,N-bis(4-methoxyphenyl) ami-no]-9,9′-spirobifluorene (spiro-OMeTAD), but the instability of organic materials in the photothermal field compromises device stability. In this study, we employ the oleic acid (YS)/oleamine (YA) end-sealing method to achieve uniform dispersion of NiO_X nanoparticles, effectively mitigating coagulation resulting from high local concentration and secondary motion adsorption. Furthermore, the conductivity of the hole transport layer and its energy level alignment with perovskite is enhanced by the additional 2,3,5,6-tetrafluoro-7,7′,8,8′-tetracyanodimethyl-p-benzoquinone (F4TCNQ), leading to a remarkable improvement of open-circuit voltage and fill factor, thus the high efficiency of 25.17% and 24.36% on 0.1 and 1.01 cm², respectively. Moreover, by realizing an all-inorganic interface layer, an initial efficiency exceeding 90% is maintained even after 2,800 h of heating at 85 °C.

目前，高效n-i-p钙钛矿太阳能电池依靠有机界面层来实现高效率，特别是2,2',7,7'-四[N,N-双(4-甲氧基苯基)氨基]-9,9' -螺二芴（spiro-OMeTAD），但有机材料在光热场中的不稳定性损害了器件的稳定性。在本研究中，我们采用油酸（YS）/油胺（YA）封端方法实现NiO _X 纳米颗粒的均匀分散，有效缓解高局部浓度和二次运动吸附造成的凝聚。此外，额外的2,3,5,6-四氟-7,7',8,8'-四氰基二甲基-对苯醌（F4TCNQ）增强了空穴传输层的电导率及其与钙钛矿的能级对准，导致开路电压和填充因子显着提高，因此在0.1和1.01 cm ² 上的效率分别达到25.17%和24.36%。此外，通过实现全无机界面层，即使在85℃下加热2,800小时后仍能保持超过90%的初始效率。