Perovskite–organic tandem solar cells with indium oxide interconnect
Brinkmann, K.O., Becker, T., Zimmermann, F. et al.
Nature 604, 280–286 (2022).
doi.org/10.1038/s41586-022-04455-0
In this Nature paper the research team reached a new outstanding certified efficiency record of 23.1% with a two-terminal perovskite/organic solar cell.
Thanks to an ALD-deposited InOx interconnection layer, the current between the two subcells is perfectly matched at 14.1 mA/cm2. The high Voc of 2.15 V indicates an almost ideal interconnection between the two subcells.
These devices are using an organic absorber for the narrow-gap subcell, which doesn’t need the high-temperature processing of silicon and is more stable than the commonly used narrow-bandgap perovskites based on Sn.
With the software Setfos from FLUXiM AG, they carried out optical simulations to identify the wide bandgap perovskite that matches the organic subcell.