journal article·2015-08-26

Inkjet Fabrication of Copper Patterns for Flexible Electronics: Using Paper with Active Precoatings

Thomas Öhlund, Anna K. Schuppert, Magnus Hummelgård, Joakim Bäckström, Hans-Erik Nilsson, Håkan Olin

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Abstract

Low-cost solution-processing of highly conductive films is important for the expanding market of printed electronics. For roll-to-roll manufacturing, suitable flexible substrates and compatible postprocessing are essential. Here, custom-developed coated papers are demonstrated to facilitate the inkjet fabrication of high performance copper patterns. The patterns are fabricated in ambient conditions using water-based CuO dispersion and intense pulsed light (IPL) processing. Papers using a porous CaCO3 precoating, combined with an acidic mesoporous absorption coating, improve the effectiveness and reliability of the IPL process. The processing is realizable within 5 ms, using a single pulse of light. A resistivity of 3.1 ± 0.12 μΩ·cm is achieved with 400 μm wide conductors, corresponding to more than 50% of the conductivity of bulk copper. This is higher than previously reported results for IPL-processed copper.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Nanomaterials and Printing Technologies · ZnO doping and properties · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Natural Sciences, Mid Sweden University, SE-85170 Sundsvall, Sweden

Institut Charles Gerhardt de Montpellier - UMR 5253, 34095 Montpellier Cedex 5, France

Department of Electronics Design, Mid Sweden University, SE-85170 Sundsvall, Sweden

Funding

Tillväxtverket · Gunnar Sundblads Forskningsfond · Kempestiftelserna

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