Upscaling perovskite technology using sheet-to-sheet & roll-to-roll slot die coating techniques

Perovskite solar cells have attracted tremendous attention as an emerging next generation photovoltaic technology and have recently shown breakthroughs towards commercialization. The solution processability of perovskite materials offers an attractive opportunity for the commercialization of perovskite PV using high-throughput sheet-to-sheet coating (S2S) or roll-to-roll (R2R) processes with low CAPEX and low operating costs. Such facile and low-temperature manufacturing methods allow perovskite PV to have reduced energy payback time and greenhouse gas emissions as compared to mainstream silicon photovoltaics. Rayleigh’s primary focus is to optimize a processing protocol for high quality, whole device stack coating including the electron transport layer, absorber, hole transport layer and back electrode. The upscaling of perovskite modules was achieved using S2S coating with the ability to coat 20 cm wide by 30 cm long substrates and R2R coating with a 30 cm webwidth.