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Proceedings Paper

Hybrid electronic systems powered by printed thermoelectric generators (Conference Presentation)
Author(s): Ulrich Lemmer; André Gall; Matthias Hecht; Silas Aslan; Frederick Lessmann; Verena Schendel

Paper Abstract

Thermoelectric generators (TEGs) transform heat to electricity without any movable parts. These devices are considered to be an important means of energy harvesting for wearables and sensor nodes for the Internet-of-Things (IoT). Organic semiconductors have recently demonstrated ZT-values approaching the same order of magnitude of those of the best established inorganic materials. Conjugated polymers as well as printable inorganic nanomaterials offer the unique advantage of being processable on printing machines. This opens a pathway for the fabrication of thermoelectric generators with unprecedented low costs thus enabling mass consumer applications. We have developed novel printable PEDOT formulations and a device layout which allow for a roll-to-roll printing process on ultrathin plastic foils. The TEGs are then subsequently fabricated by an automated folding process which allows to adapt the geometry of the devices such that the desired thermal resistance is optimum for the specific thermal boundary condition. Using this approach in combination with designed low power electronics forms the basis for several wireless sensor nodes.

Paper Details

Date Published: 19 September 2017
Proc. SPIE 10366, Hybrid Memory Devices and Printed Circuits 2017, 103660B (19 September 2017); doi: 10.1117/12.2275383
Show Author Affiliations
Ulrich Lemmer, Karlsruher Institut für Technologie (Germany)
André Gall, Karlsruher Institut für Technologie (Germany)
Otego GmbH (Germany)
Matthias Hecht, Karlsruher Institut für Technologie (Germany)
Otego GmbH (Germany)
Silas Aslan, Karlsruher Institut für Technologie (Germany)
Frederick Lessmann, Otego GmbH (Germany)
Karlsruher Institut für Technologie (Germany)
Verena Schendel, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 10366:
Hybrid Memory Devices and Printed Circuits 2017
Emil J. W. List-Kratochvil, Editor(s)

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