Gas‐assisted spray coating of perovskite solar cells incorporating sprayed self‐assembled monolayers

Autor: Cassella, E.J., Spooner, E.L.K., Thornber, T., O'Kane, M.E., Catley, T.E., Bishop, J.E., Smith, J.A., Game, O.S., Lidzey, D.G.
Jazyk: angličtina
Rok vydání: 2022
ISSN: 2198-3844
Popis: Self-assembled monolayers (SAMs) are becoming widely utilized as hole-selective layers in high-performance p-i-n architecture perovskite solar cells. Ultrasonic spray coating and airbrush coating are demonstrated here as effective methods to deposit MeO-2PACz; a carbazole-based SAM. Potential dewetting of hybrid perovskite precursor solutions from this layer is overcome using optimized solvent rinsing protocols. The use of air-knife gas-quenching is then explored to rapidly remove the volatile solvent from an MAPbI3 precursor film spray-coated onto an MeO-2PACz SAM, allowing fabrication of p-i-n devices with power conversion efficiencies in excess of 20%, with all other layers thermally evaporated. This combination of deposition techniques is consistent with a rapid, roll-to-roll manufacturing process for the fabrication of large-area solar cells.
Databáze: OpenAIRE