Substrate pre-treatment of flexible material for printed electronics with carbon nanotube based ink |
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Authors: | Aurore Denneulin Julien Bras Anne Blayo Charles Neuman |
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Institution: | a Polypore - 27, bd Louise Michel, F-92230 Gennevilliers, France b Laboratory of Pulp and Paper Science and Graphic Arts (LGP2) (UMR 5518 CNRS-CTP-INPG), Grenoble Institute of Technology (INP Grenoble - PAGORA), 461 Rue de la Papeterie, BP 65, 38402 St Martin d’Hères Cedex, France |
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Abstract: | In this work, an innovative solution was developed in order to make paper-based material, used traditionally in the packaging and labelling industries, compatible with the printing of functional conductive inks. In order to avoid the deterioration of the ink functionalities due to different paper properties, a UV-curing inkjettable primer layer was developed. This pre-treatment enables homogeneous surface properties such as smoothness, absorption capacity and surface energy to be obtained, for almost all the examined substrates. To confirm the positive impact of such pre-treatment, conductivity has been measured when using a new conductive ink, combining the processability of the PEDOT-PSS conductive polymer with the high electrical properties of carbon nanotubes (CNTs). Significant improvement has been measured for all paper materials and similar conductivity (close to reference PET film) has been obtained whatever the substrate involved. This pre-treatment now makes it possible to consider paper-based material as a potential substrate for printed electronics. In this case, the substrate adaptation technique offers an innovative solution to produce low-cost and flexible electronics. |
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Keywords: | Printed electronics Inkjet printing Flexible substrates Papers Primer layer Conductive ink Carbon nanotubes |
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