Metal‐halide perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology. Fabricating PSCs in ambient air can accelerate their low‐cost commercialization, since it can remove the reliance on atmosphere‐controlled equipment. However, the power conversion efficiency (PCE) of air‐fabricated PSCs still lags behind those fabricated in glovebox. Here, based on a technology to fabricate high‐quality perovskite film in ambient air, a compatible optimization is performed on electron transport layer (ETL) to further enhance the photovoltaic performance of PSCs. A soft‐templated deposition strategy is proposed that utilizes tetrasodium glutamate diacetate (GLDA) to finely regulate the chemical bath deposition process, leading to an ideal SnO2 ETL with no additive residual. Adopting this feature of no residual, a molecular bridge using β‐guanidinopropionic acid (βA) is constructed at the buried interface (SnO2/perovskite), which effectively enhances the electron extraction and decreases electron losses. The resulting PSCs (0.08 cm2) achieve an impressive PCE of 25.74% (certificated 25.43%), which is the highest among the air‐fabricated PSCs reported to date. A PCE of 24.61% in 1 cm2‐PSCs is also obtained, exhibiting the scalable potential of the technology. In addition, the excellent operational stability of these PSCs is also demonstrated.

中文翻译：

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SnO2 的兼容软模板沉积和表面分子桥结构使空气制造的钙钛矿太阳能电池的效率超过 25.7%

金属卤化物钙钛矿太阳能电池（PSC）已成为一种有前景的光伏技术。在环境空气中制造 PSC 可以加速其低成本商业化，因为它可以消除对气氛控制设备的依赖。然而，空气制造的 PSC 的功率转换效率（PCE）仍然落后于手套箱中制造的 PSC。这里，基于在环境空气中制备高质量钙钛矿薄膜的技术，对电子传输层（ETL）进行了兼容优化，以进一步增强PSC的光伏性能。提出了一种软模板沉积策略，利用谷氨酸二乙酸四钠（GLDA）精细调节化学浴沉积过程，从而产生理想的 SnO2ETL 无添加剂残留。利用这种无残留的特点，在埋入界面（SnO2/钙钛矿），有效增强电子提取并减少电子损失。由此产生的 PSC（0.08 cm2）实现了令人印象深刻的 25.74%（认证为 25.43%）的 PCE，这是迄今为止报道的空气制造 PSC 中最高的。 1 厘米内的 PCE 为 24.61%2‐还获得了 PSC，展示了该技术的可扩展潜力。此外，还证明了这些 PSC 优异的运行稳定性。