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Electrochemical Logic Circuits
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2773-5096
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-5154-0291
Linköping University, Department of Electrical Engineering. Linköping University, The Institute of Technology.
2005 (English)In: Advanced Materials, ISSN 0935-9648, Vol. 17, no 3, 353-358 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2005. Vol. 17, no 3, 353-358 p.
Keyword [en]
Logic gates, organic, Transistors, electrochemical
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-13563DOI: 10.1002/adma.200401273OAI: oai:DiVA.org:liu-13563DiVA: diva2:20960
Available from: 2008-11-12 Created: 2008-11-12 Last updated: 2017-02-03
In thesis
1. An Organic Electrochemical Transistor for Printed Sensors and Logic
Open this publication in new window or tab >>An Organic Electrochemical Transistor for Printed Sensors and Logic
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Conducting polymers entered the research field in late 70´s and efforts aimed at achieving printed electronics started a decade later. This thesis treats printable organic electrochemical transistors (OECT). Some conjugated polymers can be switched between a high conducting and a low conducting state in an electrochemical cell. In this thesis, the work carried out using poly(3,4-ethylenedioxythiophene) (PEDOT) as the active material in an electrochemical transistor is reported. The electrochemical transistors, presented, can be designed into a bi-stable and dynamic mode of operation. These transistors operates at voltages below 2V and current on/off ratios are typically 5000, but 105 have been reached. The transistor device can be built up from all-organic materials using common printing techniques such as with screen-printing. The bi-stable transistor can be combined with an electrochromic (EC) display cell to form a smart pixel circuit. Combining several of these smart pixels yield an actively addressed cross-point matrix display. From this an all-organic active matrix display printable on paper has been achieved. The OECT, combined with a resistor network was successfully used in inverter and logic circuits.

One important feature of these organic electrochemical devices is that both ions and electrons are used as the charge (signal) carriers. This is of particular interest and importance for chemical sensors. By combining a proton-conducting electrolyte (Nafion®) that changes its conductivity upon exposure to humidity, a simple OECT humidity sensor was achieved. This proves the use of this OECT as the ion-to-electron transducer.

Place, publisher, year, edition, pages
Institutionen för teknik och naturvetenskap, 2005
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 921
Keyword
printable organic electrochemical transistors (OECT), polymers, charge (signal) carriers, proton-conducting electrolyte (Nafion)
National Category
Organic Chemistry
Identifiers
urn:nbn:se:liu:diva-5024 (URN)91-85297-26-7 (ISBN)
Public defence
2005-02-17, K3, Kåkenhus, Campus Norrköping, Linköpings universitet, Linköping, 10:00 (English)
Opponent
Supervisors
Available from: 2005-03-10 Created: 2005-03-10 Last updated: 2017-02-03

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Nilsson, DavidRobinson, NathanielBerggren, MagnusForchheimer, Robert

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