Highly Efficient Perovskite Solar Cells Using Non‐Toxic Industry Compatible Solvent System

• Published in: Solar RRL 2017-11, Vol.1 (11), p.n/a
• Main Authors: Wang, Junke, Di Giacomo, Francesco, Brüls, Jim, Gorter, Harrie, Katsouras, Ilias, Groen, Pim, Janssen, René A. J., Andriessen, Ronn, Galagan, Yulia
• Format: Article
• Language: English
• Subjects: alternative solvents; Hansen solubility parameters; industry compatible solvent systems; non‐toxic; perovskite solar cells
• ISSN: 2367-198X; 2367-198X
• DOI: 10.1002/solr.201700091

Perovskite solar cells attract a lot attention as alternative energy sources for the future energy market. With the remarkable lab‐scale achievements, the investigations into a high‐throughput large‐scale production of perovskite devices are now on the agenda. The first step towards mass manufacturing should be a replacement of toxic solvents used in the manufacturing of perovskite layer. In this study, a non‐toxic and up‐scaling compatible solvent system is developed. The impact of the solvent properties on the perovskite crystallization kinetics has been systematically investigated, which is found to be crucial in controlling the surface coverage and layer crystallinity. By optimizing the processing conditions, a stabilized efficiency of 16.0% is achieved with the developed non‐toxic solvent system. Non‐toxic solvent system compatible with industrial up‐scalable manufacturing is developed for high‐performing perovskite photovoltaics. A very promising PCE higher than 16% has been achieved after optimizing the process conditions. The developed solvent system is eminently suitable for the future R2R production of perovskite solar cells.