SnO₂ has been proven to be an effective electron transport layer (ETL) material for perovskite solar cells (PSCs) owing to its excellent electrical and optical properties. Here, we introduce a viable spray coating method for the preparation of SnO₂ films. Then, we employ a SnO₂ film prepared using the spray coating method as an ETL for PSCs. The PSC based on the spray-coated SnO₂ ETL achieves a power conversion efficiency of 17.78%, which is comparable to that of PSCs based on conventional spin-coated SnO₂ films. The large-area SnO₂ films prepared by spray coating exhibit good repeatability for device performance. This study shows that SnO₂ films prepared by spray coating can be applied as ETLs for stable and high-efficiency PSCs. Because the proposed method involves low material consumption, it enables the low-cost and large-scale production of PSCs.

SnO ₂由于其优异的电学和光学特性，已被证明是钙钛矿太阳能电池（PSC）的有效电子传输层（ETL）材料。在这里，我们介绍了一种可行的喷涂方法来制备SnO ₂薄膜。然后，我们采用通过喷涂方法制备的SnO ₂膜作为PSC的ETL。基于喷涂SnO ₂ ETL的PSC的功率转换效率为17.78％，与基于常规旋涂SnO ₂薄膜的PSC的功率转换效率相当。通过喷涂制备的大面积SnO ₂膜对于器件性能表现出良好的可重复性。这项研究表明SnO ₂通过喷涂制备的薄膜可以用作ETL，用于稳定和高效的PSC。由于所提出的方法消耗的材料少，因此可以低成本，大规模生产PSC。