The increase in the size of the PK/Si tandems from the small laboratory size to large sizes poses two fundamental challenges: to preserve the homogenous perovskite coating over large areas, and to improve current extraction over large areas.
Key Facts Perovskite/silicon heterojunction tandem cell (1.43 cm2) on a single-sided textured bottom cell with a power conversion efficiency of 25.4% and current-matching between the two sub-cells; the same cell also gave 25.6% in light-IV measurements Fully textured bottom cell showing power conversion efficiency of 25.6% (25.24% maximum power point (MPP) tracked) Depositing of perovskite … Read more