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Energy turnaround: Printing of thermoelectric generators

: Dani, Ines; Roch, Aljoscha; Stepien, Lukas; Leyens, Christoph; Greifzu, Moritz; Lukowicz, Marian von

Postprint urn:nbn:de:0011-n-2667321 (163 KByte PDF)
MD5 Fingerprint: d9ce22093a246239c74675a11aea1c9d
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Created on: 11.10.2014

Kovacs, G.L. ; International Federation for Information Processing -IFIP-:
Digital Product and Process Development Systems. IFIP TC 5 International Conference, NEW PROLAMAT 2013 : Dresden, Germany, October 10-11, 2013, Proceedings
Berlin: Springer, 2013 (IFIP advances in information and communication technology 411)
ISBN: 978-3-642-41328-5 (Print)
ISBN: 978-3-642-41329-2 (Online)
ISBN: 3-642-41328-5
International Conference "NEW PROLAMAT" <5, 2013, Dresden>
Conference Paper, Electronic Publication
Fraunhofer IWS ()

Waste heat in the temperature range up to 100 °C can be found in virtually all areas of industry and building and is often the hardest to recover cost-efficiently. It accounts for more than 50 % of the total heat generated in industry [1]. Therefore, increasing interest is noticed in thermoelectric harvesters in the operation temperature range from room temperature up to 100 °C. The aim of this work is the development of materials and processes for the material and cost efficient scalable production of TEGs. PEDOT:PSS is an interesting p-type conducting polymer suitable for printing of TEGs. A printed unileg generator, i.e. by using just a p-conductive material, was realised by dispenser printing of DMSO-doped PEDOT:PSS on polyimide. Contacts were made from silver. A TEG with 60 legs was characterized. The internal resistance is increasing linearly with the number of legs, confirming the good reproducibility of the printing process. By using a multilayer design the resistance can be decreased by more than 50 %. A temperature difference of 90 K results in a voltage of 37 mV (at 20 °C at the cold side).