Table 1 Technical details of two types of state-of-the-art 2T monolithic tandem solar cells.

Perovskite-silicon
tandem (17)
Perovskite-
perovskite tandem
(14)
Module efficiency25.2%23.1%
Low-bandgap cellSilicon heterojunction
(SHJ) cell
(FA, MA) (Sn, Pb) I3
perovskite solar cell
Recombination
junction
AZOAZO
Wide-bandgap cell(Cs, FA) Pb (I, Br)3
perovskite solar cell
(Cs, FA, MA) Pb (I, Br)3
perovskite solar cell