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Article

Geometry Control of Source/Drain Electrodes in Organic Field-Effect Transistors by Electrohydrodynamic Inkjet Printing

1
Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
2
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(21), 4974; https://doi.org/10.3390/ma13214974
Received: 9 October 2020 / Revised: 1 November 2020 / Accepted: 2 November 2020 / Published: 5 November 2020
In this work we study the influence of dielectric surface and process parameters on the geometry and electrical properties of silver electrodes obtained by electrohydrodynamic inkjet printing. The cross-section and thickness of printed silver tracks are optimized to achieve a high conductivity. Silver overprints with cross-section larger than 4 μm2 and thickness larger than 90 nm exhibit the lowest resistivity. To fabricate electrodes in the desired geometry, a sufficient volume of ink is distributed on the surface by applying appropriate voltage amplitude. Single and multilayer overprints are incorporated as bottom contacts in bottom gate organic field-effect transistors (OFETs) with a semiconducting polymer as active layer. The multilayer electrodes result in significantly higher electrical parameters than single layer contacts, confirming the importance of a careful design of the printed tracks for reliable device performance. The results provide important design guidelines for precise fabrication of electrodes in electronic devices by electrohydrodynamic inkjet printing. View Full-Text
Keywords: printed electronics; electrohydrodynamic inkjet printing; organic field-effect transistors printed electronics; electrohydrodynamic inkjet printing; organic field-effect transistors
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MDPI and ACS Style

Sleczkowski, P.; Borkowski, M.; Zajaczkowska, H.; Ulanski, J.; Pisula, W.; Marszalek, T. Geometry Control of Source/Drain Electrodes in Organic Field-Effect Transistors by Electrohydrodynamic Inkjet Printing. Materials 2020, 13, 4974. https://doi.org/10.3390/ma13214974

AMA Style

Sleczkowski P, Borkowski M, Zajaczkowska H, Ulanski J, Pisula W, Marszalek T. Geometry Control of Source/Drain Electrodes in Organic Field-Effect Transistors by Electrohydrodynamic Inkjet Printing. Materials. 2020; 13(21):4974. https://doi.org/10.3390/ma13214974

Chicago/Turabian Style

Sleczkowski, Piotr, Michal Borkowski, Hanna Zajaczkowska, Jacek Ulanski, Wojciech Pisula, and Tomasz Marszalek. 2020. "Geometry Control of Source/Drain Electrodes in Organic Field-Effect Transistors by Electrohydrodynamic Inkjet Printing" Materials 13, no. 21: 4974. https://doi.org/10.3390/ma13214974

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