Scientific Achievement
Foundry staff and users developed a simplified process for fabricating perovskite solar cells and used a set of in situ characterization tools to understand why the process works.
Significance and Impact
The simplified fabrication process improves performance of resulting solar cells to 20.8%. These advances could help to reduce barriers for widespread use of perovskite-based devices.
Research Details
- Multimodal in situ characterization at the Foundry and ALS during film formation showed that adding the 2D perovskite slows nucleation and crystal growth allowing for more control.
- The 3D perovskite layers show larger grain sizes which reduces grain boundary recombination, and the 2D structures segregate at the surface of the 3D film protecting it from humidity-induced degradation
Kodalle, T., Byranvand, M.M., Goudreau, M, Das, C., Roy, Rajarshi, Kot, M., Briesenick, S., Zohdi, M., Rai, M., Tamura, N., Flege, J.I., Hempel, W., Sutter-Fella, C.M., Saliba, M. Adv. Mat. 2309154. (2024) DOI:10.1002/adma.202309154
Read the related news release.