Perovskite-based tandem solar cells ahead

Perovskite-based tandem cells as clean photovoltaic conversion devices drive the transition to decarbonized energy. Recently in Nature, Tan and co-workers report a certified efficiency of 26.4%, a record-setting efficiency in all-perovskite tandem solar cells. High photocurrent density is achieved by ammonium cation passivation, addressing the short carrier diffusion length in thick mixed PbSn narrow-bandgap subcell.

Automated summary

Perovskite-based tandem cells with high efficiency and clean energy conversion have been developed. By passivating with ammonium cations, the issue of short carrier diffusion length in thick PbSn narrow-bandgap subcell has been addressed, leading to a certified efficiency of 26.4%, a new record for all-perovskite tandem solar cells.