About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Reliable PEDOT:PSS inks using bio-renewable green co-solvents for Inkjet 3D-printed electronics |
Author(s) |
Geoffrey Rivers, Jonathan S Austin, Yinfeng He, Adam Thompson, Nathan Roberts, Peng Zhao, Christopher J. Tuck, Richard J.M. Hague, Ricky D. Wildman, Lyudmila Turyanska |
On-Site Speaker (Planned) |
Geoffrey Rivers |
Abstract Scope |
Inkjet-based 3D printing (IJ3DP) of the conductive polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) can enable manufacturing of the next generation of electronics, having been successfully used previously in devices such as solar cells and sensors. However, to achieve precise printing of PEDOT:PSS inks over large areas, challenges with jetting reliability must be addressed. We report on the development of new PEDOT:PSS ink formulations, utilising three bio-renewable co-solvents: dihydrolevoglucosenone (‘cyrene’), glycerol carbonate, and n-butanol. These formulations improved jetting reliability, which enabled large-area printing of electronic patterns (140 capacitive electrodes over a 62.5 cm2 area) presenting an as-printed conductivity of 218 S/cm, as well as enabling improved layer flatness (Sa = 16 nm) via adapted printing strategies. The formulation also had enhanced stability in different environments (elevated temperature, UV exposure, air exposure), presenting realistic prospects for its application in printed heterostructures with other inkjet deposited functional materials such as graphene and metal nanoparticles. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |