The printable electrode interlayer with excellent thickness tolerance is crucial for mass production of organic solar cells (OSCs) by solution-based print techniques. Herein, high-quality printable SnO₂ films are simply fabricated by spin-coating or blade-coating the chemical precipitated SnO₂ colloid precursor with post thermal annealing treatment. The SnO₂ films possess outstanding optical and electrical properties, especially extreme thickness-insensitivity. The interfacial electron trap density of SnO₂ cathode interlayers (CILs) are very low and show negligible increase as the thicknesses increase from 10 to 160 nm, resulting in slight change of the power conversion efficiencies (PCEs) of the PM6:Y6 based OSCs from 16.10% to 13.07%. For blade-coated SnO₂ CIL, the PCE remains high up to 12.08% even the thickness of SnO₂ CIL is high up to 530 nm. More strikingly, the large-area OSCs of 100 mm² with printed SnO₂ CILs obtain a high efficiency of 12.74%. To the best of our knowledge, this work presents the first example for the high-performance and large-area OSCs with the thickness-insensitive SnO₂ CIL.

具有出色的厚度公差的可印刷电极夹层对于通过基于溶液的印刷技术大规模生产有机太阳能电池（OSC）至关重要。在此，通过用后热退火处理对化学沉淀的SnO ₂胶体前体进行旋涂或刮涂，可以简单地制造高质量的可印刷SnO ₂膜。SnO ₂膜具有出色的光学和电学性能，尤其是极度的厚度不敏感性。SnO ₂的界面电子陷阱密度阴极中间层（CIL）非常低，并且随着厚度从10纳米增加到160纳米而显示出微不足道的增加，导致基于PM6：Y6的OSC的功率转换效率（PCE）从16.10％轻微变化到13.07％。对于刀片涂层的SnO ₂ CIL，即使SnO ₂ CIL的厚度高达530 nm ，PCE仍然高达12.08％。更惊人的是，带有印刷SnO ₂ CIL的100 mm ²大面积OSC获得了12.74％的高效率。据我们所知，这项工作为使用厚度不敏感的SnO ₂ CIL的高性能和大面积OSC提供了第一个示例。