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Optimization of aperture size and distance in the insulating mask of a five layer vertical stack forming a fully printed thermoelectric generator
Institute for Applied Research, Media University Stuttgart, Stuttgart, Germany .
Institute for Applied Research, Media University Stuttgart, Stuttgart, Germany .
2011 (English)In: Advances in Printing and Media Technology Proceedings of the 38th International Research Conference of iarigai / [ed] Nils Enlund and Mladen Lovreček, International Association of Research Organizations for the Information, Media and Graphic Arts Industries , 2011, Vol. 38, p. 261-269Conference paper, Published paper (Refereed)
Abstract [en]

Printed thermoelectric generators (TEG) combine the advantages of screen printing with the uncomplicated assembly and reliability of thermoelectric devices. Successively printed layers on top of each other are needed for a completed device in a vertical stack setup. One of the challenging layers is the insulating mask which provides cavities for the thermoelectric legs. By governing the thickness of this insulating mask the overall thickness of the TEG is determined, too. The spatial separation is a necessity for reasonable energy conversion efficiency.

Place, publisher, year, edition, pages
International Association of Research Organizations for the Information, Media and Graphic Arts Industries , 2011. Vol. 38, p. 261-269
Series
Advances in Printing and Media Technology, ISSN 2225-6067, E-ISSN 2409-4021 ; 38
Keywords [en]
Thermoelectric generators (TEG), insulating mask, energy conversion
National Category
Media Engineering
Identifiers
URN: urn:nbn:se:liu:diva-152447ISBN: 9783981270433 (print)ISBN: 9783987070440 (electronic)OAI: oai:DiVA.org:liu-152447DiVA, id: diva2:1259959
Conference
The 38th International Research Conference of iarigai, Budapest-Debrecen, Hungary, September 2011
Available from: 2018-10-31 Created: 2018-10-31 Last updated: 2018-10-31Bibliographically approved
In thesis
1. Screen Printing Technology for Energy Devices
Open this publication in new window or tab >>Screen Printing Technology for Energy Devices
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The technical application of screen and stencil printing has been state of the art for decades. As part of the subtractive production process of printed circuit boards, for instance, screen and stencil printing play an important role. With the end of the 20th century, another field has opened up with organic electronics. Since then, more and more functional layers have been produced using printing methods. Printed electronics devices offer properties that give almost every freedom to the creativity of product development. Flexibility, low weight, use of non-toxic materials, simple disposal and an enormous number of units due to the production process are some of the prominent keywords associated with this field.

Screen printing is a widely used process in printed electronics, as this process is very flexible with regard to the materials that can be used. In addition, a minimum resolution of approximately 30 µm is sufficiently high. The ink film thickness, which can be controlled over a wide range, is an extremely important advantage of the process. Depending on the viscosity, layer thicknesses of several hundred nanometres up to several hundred micrometres can be realised.

The conversion and storage of energy became an increasingly important topic in recent years. Since regenerative energy sources, such as photovoltaics or wind energy, often supply energy intermittently, appropriate storage systems must be available. This applies to large installations for the power supply of society, but also in the context of autarkic sensors, such as those used in the Internet of Things or domestic/industrial automation. A combination of micro-energy converters and energy storage devices is an adequate concept for providing energy for such applications.

In this thesis the above mentioned keywords are addressed and the feasibility of printed thermoelectric energy converters and supercapacitors as energy storage devices are investigated. The efficiency of thermoelectric generators (TEG) is low, but in industrial environments, for example, a large amount of unused low temperature heat energy can be found. If the production costs of TEGs are low, conversion of this unused heat energy can contribute to increasing system efficiency.

Additionally, printing of supercapacitor energy storage devices increases the usability of the TEG. It is appropriate to use both components as complementary parts in an energy system.

Abstract [sv]

Den tekniska tillämpningen av skärm- och stencilutskrift har varit toppmoderna i årtionden. Som en del av den subtraktiva produktionsprocessen av tryckta kretskort spelar exempelvis skärm- och stencilutskrift en viktig roll. I slutet av 1900-talet har ett annat fält öppnat med organisk elektronik. Sedan dess har allt fler funktionella lager producerats med hjälp av tryckmetoder. Tryckta elektronikanordningar erbjuder egenskaper som ger nästan all frihet till kreativiteten i produktutvecklingen. Flexibilitet, låg vikt, användning av giftfria material, enkelt bortskaffande och ett enormt antal enheter på grund av produktionsprocessen är några av de framträdande nyckelord som hör till detta område.

Skärmtryck är en allmänt använd process i tryckt elektronik, eftersom processen är mycket flexibel med avseende på material som kan användas. Dessutom är en minsta upplösning på cirka 30 µm tillräckligt bra. Bläckfilmens tjocklek, som kan styras över ett brett område, är en extremt viktig fördel med processen. Beroende på viskositeten kan skikttjockleken på flera hundra nanometer upp till flera hundra mikrometer realiseras.

Energikonvertering och lagring har blivit ett allt viktigare ämne de senaste åren. Eftersom regenerativa energikällor, såsom fotovoltaik eller vindkraft, ofta levererar energi intermittent, måste lämpliga lagringssystem vara tillgängliga. Detta gäller stora installationer för samhällets strömförsörjning, men också inom ramen för autarkiska sensorer, som de som används i saker av saker eller inhemsk / industriell automation. En kombination av mikroenergiomvandlare och energilagringsenheter är ett lämpligt koncept för att tillhandahålla energi för sådana applikationer.

I denna avhandling behandlas ovan nämnda nyckelord. Genomförbarhet av tryckta termoelektriska energiomvandlare och superkapacitorer som energilagringsenheter undersöks. Effektiviteten hos termoelektriska generatorer (TEG) är låg, men i industriella miljöer kan exempelvis en stor mängd oanvänd låg temperatur värmeenergi hittas. Om produktionskostnaderna för TEG är låga kan konvertering av denna oanvända värmeenergi bidra till ökad systemeffektivitet. Dessutom ökar utskrift av superkapacitorer användbarheten hos TEG. Det är lämpligt att använda båda komponenterna.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2019. p. 106
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1942
Keywords
screen printing, printed electronics, energy converters, energy storage
National Category
Other Physics Topics
Identifiers
urn:nbn:se:liu:diva-152425 (URN)10.3384/diss.diva-152425 (DOI)9789176852743 (ISBN)
Public defence
2019-03-15, Önnesjösalen, K3, Kåkenhus, Campus Norrköping, Norrköping, 10:00 (English)
Opponent
Supervisors
Available from: 2018-10-30 Created: 2018-10-30 Last updated: 2023-12-06Bibliographically approved

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