Gas-Assisted Spray Coating of Perovskite Solar Cells Incorporating Sprayed Self-Assembled Monolayers
- PMID: 35142096
- PMCID: PMC9108661
- DOI: 10.1002/advs.202104848
Gas-Assisted Spray Coating of Perovskite Solar Cells Incorporating Sprayed Self-Assembled Monolayers
Abstract
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.
Keywords: air-knife; gas-quenching; perovskite solar cells; scalable fabrication; self-assembled monolayers; spray coating.
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
Conflict of interest statement
D.G.L. is a director of the materials science company Ossila that retails materials and equipment for thin film fabrication, including for research and development of perovskite photovoltaics.
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