The feasibility of upscaling the perovskite solar cells technologies to high volume production using roll‐to‐roll (R2R) slot die coating is demonstrated in this study. Perovskite solar cells are produced by R2R slot die coating on flexible substrates with a width of 30 cm and the web speed of 3–5 m min⁻¹. R2R deposition of the electron transport layer and perovskite is performed at ambient atmosphere from nontoxic solvents compatible with industrial manufacturing. The average stabilized power conversion efficiency of the devices made on different areas of the foil is 12%, with the best value of 13.5%. The demonstrated achievement is an important milestone and a big solid step toward future commercialization of perovskite‐based solar cells technologies.

中文翻译：

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卷到卷槽模涂钙钛矿，用于高效柔性太阳能电池

这项研究证明了使用辊对辊（R2R）缝口模头涂层将钙钛矿太阳能电池技术升级为大批量生产的可行性。钙钛矿型太阳能电池是通过R2R狭缝模具涂层在宽度为30 cm，网速为3–5 m min ^-1的柔性基板上生产的。电子传输层和钙钛矿的R2R沉积是在环境气氛下用与工业生产相容的无毒溶剂进行的。在箔的不同区域上制成的设备的平均稳定功率转换效率为12％，最佳值为13.5％。所证明的成就是重​​要的里程碑，是钙钛矿型太阳能电池技术未来商业化的重要一步。