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Reconfigurable sticker label electronics manufactured from nanofibrillated cellulose-based self-adhesive organic electronic materials
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology. Acreo Swedish ICT AB, Sweden and Lintec Corporation, Japan.
Acreo Swedish ICT AB, Sweden.
Acreo Swedish ICT AB, Sweden.
Acreo Swedish ICT AB, Sweden.
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2013 (English)In: Organic electronics, ISSN 1566-1199, E-ISSN 1878-5530, Vol. 14, no 11, 3061-3069 p.Article in journal (Refereed) Published
Abstract [en]

Low voltage operated electrochemical devices can be produced from electrically conducting polymers and polyelectrolytes. Here, we report how such polymers and polyelectrolytes can be cast together with nanofibrillated cellulose (NFC) derived from wood. The resulting films, which carry ionic or electronic functionalities, are all-organic, disposable, light-weight, flexible, self-adhesive, elastic and self-supporting. The mechanical and self-adhesive properties of the films enable simple and flexible electronic systems by assembling the films into various kinds of components using a "cut and stick" method. Additionally, the self-adhesive surfaces provide a new concept that not only allows for simplified system integration of printed electronic components, but also allows for a unique possibility to detach and reconfigure one or several subcomponents by a "peel and stick" method to create yet another device configuration. This is demonstrated by a stack of two films that first served as the electrolyte layer and the pixel electrode of an electrochromic display, which then was detached from each other and transferred to another configuration, thus becoming the electrolyte and gate electrode of an electrochemical transistor. Further, smart pixels, consisting of the combination of one electrochromic pixel and one electrochemical transistor, have successfully been manufactured with the NFC-hybridized materials. The concept of system reconfiguration was further explored by that a pixel electrode charged to its colored state could be detached and then integrated on top of a transistor channel. This resulted in spontaneous discharging and associated current modulation of the transistor channel without applying any additional gate voltage. Our peel and stick approach promises for novel reconfigurable electronic devices, e. g. in sensor, label and security applications.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 14, no 11, 3061-3069 p.
Keyword [en]
Cellulose nanofiber, electrochromic display, electrochemical transistor, selfadhesion, electronic system integration
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-91271DOI: 10.1016/j.orgel.2013.07.013ISI: 000325487000049OAI: oai:DiVA.org:liu-91271DiVA: diva2:616752
Available from: 2013-08-22 Created: 2013-04-18 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Novel architectures for flexible electrochemical devices and systems
Open this publication in new window or tab >>Novel architectures for flexible electrochemical devices and systems
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Electrically conducting polymers were discovered in the late 1970s. This finding generated a whole new research area named organic electronics, an area which has attracted great interest and tremendous achievements, in terms of devices and applications, have been reached by different research groups all over the world. Replacing inorganic materials by their organic counterparts in various kinds of electronic devices provides novel device functionalities as well as new opportunities in device manufacturing. One of the major advantages of utilizing organic materials in electronic devices is the high degree of freedom regarding fabrication methods. Since organic materials can be processed from solution various printing, coating and lamination techniques can be used to manufacture entire electronic systems on flexible carriers and substrates in a truly reel-to-reel fashion.

The main theme of this thesis relates to exploring novel device architectures to enable easy manufacturing of flexible electrochromic displays based on organic materials. After the introduction, the second part of the thesis treats some of the fundamentals of conducting polymers, and the third part explains the building blocks of matrix-addressed electrochromic displays: those systems combine electrochemical transistors and electrochromic display pixels. A brief introduction to printed electronics is also given in the fourth section. Then, active matrix addressed displays utilizing electronic vias manufactured through the substrate, which enable to use the substrate more efficiently in the resulting three-dimensional architecture, are presented in the fifth section. This novel system arrangement results in a matrix-addressed display with a relatively high fill-factor since its subcomponents are located on opposite sides of the substrate. The sixth section of the thesis is related to the achievement of passive matrix addressed displays. The architecture and the manufacturing process of these electrochromic displays are both very simple: an electrolyte is sandwiched in between the counter and the pixel electrode layers. The electrode materials chosen results in a non-linear current versus voltage characteristics, which enables matrix addressability also without the transistors. At last, in the seventh section, nanofibrillated cellulose (NFC) is used as the scaffold for either an electroactive polymer or the electrolyte. Various components, such as electrochromic pixels and electrochemical transistors, can be built from the resulting solid films thanks to the stable, soft and tacky properties of the hybridized NFC layer. Hence, a new concept for integration and reconfiguration of electronic systems consisting of electrochemical devices is achieved.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2013. 70 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1508
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-91273 (URN)978-91-7519-657-2 (ISBN)
Public defence
2013-05-21, K1, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 10:15 (English)
Opponent
Supervisors
Available from: 2013-08-22 Created: 2013-04-18 Last updated: 2017-02-03Bibliographically approved

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Kawahara, JunBerggren, Magnus

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