Swansea University has established a low-cost and scalable carbon ink formulation capable of unlocking, for the first time, the potential for perovskite solar cells to be manufactured at scale. Using slot die coating in a roll-to-roll (R2R) process, academics from the SPECIFIC Innovation and Knowledge Centre at Swansea University have established a way to create “fully printable” perovskite photovoltaics (PV), a term often used but, until now, incorrect.