How to get over 25.5mA cm-2 integrated current density in perovskite solar cells and modules: substrate choice, annealing, additives and passivation strategies investigation

Perovskite Solar Technology is at a turning point, with efficiencies reaching up to 26.1%[1]. These results are obtained on FAPbI3 based perovskite and only by few research centres worldwide, mainly due to a well-known narrow band-gap perovskite structure which is difficult to stabilize [2][3]. In this work, FAPbI3 based perovskite have been investigated under different strategies: 1) substrate choice 2) annealing 3) additives 4) passivationThese optimizations have been used for both flexible and up-scalable devices, reaching highly efficient devices on micro modules size, with an active area of 2.5cm2.</p