One-step polymer assisted roll-to-roll gravure-printed perovskite solar cells without using anti-solvent bathing

Francesco Bisconti, Antonella Giuri, Riikka Suhonen, Thomas M. Kraft, Mari Ylikunnari, Ville Holappa, Riccardo Po, Paolo Biagini, Alberto Savoini, Gianluigi Marra, Silvia Colella, Aurora Rizzo (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)
51 Downloads (Pure)


High-throughput manufacturing of hybrid halide perovskite solar cells is the next challenge before they enter the market. An anti-solvent bath is generally required to control the perovskite film assembly starting from precursors in solution. Although an anti-solvent bath has proven feasible for roll-to-roll deposition, it implies an undoubted increased complexity of the manufacturing line, meaning enhanced costs for the process itself and anti-solvent disposal. Here, we take advantage of the use of a starch polymer as a rheological modifier in perovskite precursor solutions to avoid the anti-solvent bath. Starch allows for control of the perovskite growth process in one step and reach of required viscosities for gravure-printing technique with ∼50% less of the raw precursor materials. This combined with simplified processing conditions are expected to drastically lower the costs of perovskite material production. We demonstrate that this approach can be upscaled to roll-to-roll gravure printing of flexible solar cells, reaching a maximum power conversion efficiency close to 10%.
Original languageEnglish
Article number100639
Number of pages14
JournalCell Reports Physical Science
Issue number11
Publication statusPublished - 4 Nov 2021
MoE publication typeA1 Journal article-refereed


  • ambient air deposition
  • antisolvent bath free
  • flexible perovskite
  • gravure printing
  • perovskite
  • perovskite polymer ink
  • photovoltaic device
  • roll-to-roll
  • scale up
  • solar cells


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