A tool for identifying green solvents for printed electronics

Christian Larsen, Petter Lundberg, Shi Tang, Joan Ràfols-Ribé, Andreas Sandström, E. Mattias Lindh, Jia Wang and Ludvig Edman ()
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Christian Larsen: Umeå University
Petter Lundberg: Umeå University
Shi Tang: Umeå University
Joan Ràfols-Ribé: Umeå University
Andreas Sandström: Umeå University
E. Mattias Lindh: Umeå University
Jia Wang: Umeå University
Ludvig Edman: Umeå University

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract The emerging field of printed electronics uses large amounts of printing and coating solvents during fabrication, which commonly are deposited and evaporated within spaces available to workers. It is in this context unfortunate that many of the currently employed solvents are non-desirable from health, safety, or environmental perspectives. Here, we address this issue through the development of a tool for the straightforward identification of functional and “green” replacement solvents. In short, the tool organizes a large set of solvents according to their Hansen solubility parameters, ink properties, and sustainability descriptors, and through systematic iteration delivers suggestions for green alternative solvents with similar dissolution capacity as the current non-sustainable solvent. We exemplify the merit of the tool in a case study on a multi-solute ink for high-performance light-emitting electrochemical cells, where a non-desired solvent was successfully replaced by two benign alternatives. The green-solvent selection tool is freely available at: www.opeg-umu.se/green-solvent-tool .

Date: 2021
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DOI: 10.1038/s41467-021-24761-x

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