Abstract：
Spray coating is an industrially mature technique used to deposit thin films that combines high throughput with the ability to coat nonplanar surfaces. Here, we explore the use of ultrasonic spray coating to fabricate perovskite solar cells (PSCs) over rigid, nonplanar surfaces without problems caused by solution dewetting and subsequent \"run-off\". Encouragingly, we find that PSCs can be spray-coated using our processes onto glass substrates held at angles of inclination up to 45° away from the horizontal, with such devices having comparable power conversion efficiencies (up to 18.3%) to those spray-cast onto horizontal substrates. Having established that our process can be used to create PSCs on surfaces that are not horizontal, we fabricate devices over a convex glass substrate, with devices having a maximum power conversion efficiency of 12.5%. To our best knowledge, this study represents the first demonstration of a rigid, curved perovskite solar cell. The integration of perovskite photovoltaics onto curved surfaces will likely find direct applications in the aerospace and automotive sectors.
摘要：
喷涂是用于沉积薄膜的工业上成熟的技术,其结合了高通量和涂覆非平面表面的能力。这里,我们探索了使用超声波喷涂来制造钙钛矿太阳能电池（PSC），不具有由溶液去湿和随后的“径流”引起的问题的非平面表面。令人鼓舞的是，我们发现，PSC可以使用我们的工艺喷涂到玻璃基板上，与水平面成45°的倾斜角，这样的装置具有与喷涂到水平基板上的装置相当的功率转换效率(高达18.3%)。已确定我们的过程可用于在非水平表面上创建PSC，我们在凸面玻璃基板上制造设备，器件的最大功率转换效率为12.5%。据我们所知，这项研究代表了僵化的第一个证明，弯曲的钙钛矿太阳能电池。将钙钛矿光伏集成到曲面上可能会直接应用于航空航天和汽车领域。
