Roll‐to‐Roll Slot Die Coated Perovskite for Efficient Flexible Solar Cells

• Published in: Advanced energy materials 2018-11, Vol.8 (32), p.n/a
• Main Authors: Galagan, Yulia, Di Giacomo, Francesco, Gorter, Harrie, Kirchner, Gerwin, de Vries, Ike, Andriessen, Ronn, Groen, Pim
• Format: Article
• Language: English
• Subjects: Commercialization; Electron transport; Energy conversion efficiency; flexible substrates; Foils; nonhazardous solvents; perovskite solar cells; Perovskites; Photovoltaic cells; roll‐to‐roll; Slot dies; slot‐die coating; Solar cells; Substrates
• ISSN: 1614-6832; 1614-6840
• DOI: 10.1002/aenm.201801935

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. Perovskite solar cells produced by roll‐to‐roll (R2R) slot die coating on flexible substrates at ambient atmosphere from nontoxic solvents demonstrate an average stabilized efficiency of 12%, with the best value of 13.5%. This study is the first public demonstration of R2R slot die coating of perovskites on 30 cm wide substrates with the deposition and drying speed of 3–5 m min−1.