Flexible Organic-Inorganic Perovskite Solar Cells via Inkjet Printing
ONE Lab: Anna Osherov, Sam Stranks, Annie Wang, Joel Jean, Melany Sponseller, Vladimir Bulović
Collaborators: Yi Song, Jing Kong, Matt Klug, Angela Belcher, Karen Gleason
Due to their remarkable optical and electronic properties, coupled with low-temperature solution processability and environmental abundance of precursor materials—hybrid organic-inorganic metal halide perovskites have garnered increased attention as an attractive material for solar photovoltaics. These materials exhibit low internal losses and efficient carrier transport, resulting in high solar power conversion efficiencies. However, to achieve large-scale deployment, emerging thin-film technologies including perovskites must attain high efficiencies using high-throughput manufacturing techniques. Inkjet printing of hybrid organic-inorganic perovskites (e.g., CH3NH3PbI3) offers a promising approach for low-cost, scalable manufacturing of future thin-film solar cells.
We are working toward realization of a fully printed solar cell on a variety of surfaces, including paper, metal foils, textiles, and a variety of polymers, as well as substrates with irregular shapes. Control over the key printing parameters, precursor solution chemistries, and wetting characteristics of the substrate allows control over film formation mechanisms, morphology and homogeneity, and corresponding photovoltaic performance.
SEM micrograph of inkjet printed CH3NH3PbI3 thin film. Inset: Photograph of a CH3NH3PbI3 film on 1’’ glass substrate, demonstrating maskless patterning approach.