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An Organic Mixed Ion–Electron Conductor for Power Electronics
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-2904-7238
Innventia AB, Stockholm.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska fakulteten.
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2016 (Engelska)Ingår i: Advanced Science, ISSN 2198-3844, artikel-id 1500305Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A mixed ionic–electronic conductor based on nanofibrillated cellulose composited with poly(3,4-ethylene-dioxythio­phene):­poly(styrene-sulfonate) along with high boiling point solvents is demonstrated in bulky electrochemical devices. The high electronic and ionic conductivities of the resulting nanopaper are exploited in devices which exhibit record values for the charge storage capacitance (1F) in supercapacitors and transconductance (1S) in electrochemical transistors.

Ort, förlag, år, upplaga, sidor
Wiley-VCH Verlagsgesellschaft, 2016. artikel-id 1500305
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:liu:diva-123225DOI: 10.1002/advs.201500305ISI: 000370336500011OAI: oai:DiVA.org:liu-123225DiVA, id: diva2:878298
Anmärkning

Funding agencies:  Knut and Alice Wallenberg foundation [KAW 2011.0050]; Onnesjo Foundation; Advanced Functional Materials Center at Linkoping University; Stiftelsen for strategisk forskning (SSF); RISE Research Institutes of Sweden; U.S. National Science Foundation [DMR-12

Tillgänglig från: 2015-12-08 Skapad: 2015-12-08 Senast uppdaterad: 2018-02-15
Ingår i avhandling
1. Flexible and Cellulose-based Organic Electronics
Öppna denna publikation i ny flik eller fönster >>Flexible and Cellulose-based Organic Electronics
2017 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Organic electronics is the study of organic materials with electronic functionality and the applications of such materials. In the 1970s, the discovery that polymers can be made electrically conductive led to an explosion within this field which has continued to grow year by year. One of the attractive features of organic electronic materials is their inherent mechanical flexibility, which has led to the development of numerous flexible electronics technologies such as organic light emitting diodes and solar cells on flexible substrates. The possibility to produce electronics on flexible substrates like plastic or paper has also had a large impact on the field of printed, electronics where inks with electronic functionality are used for large area fabrication of electronic devices using classical printing methods, such as screen printing, inkjet printing and flexography.

Recently, there has been a growing interest in the use of cellulose in organic and printed electronics, not only as a paper substrate but also as a component in composite materials where the cellulose provides mechanical strength and favorable 3D-microstructures. Nanofibrillated cellulose is composed of cellulose fibers with high aspect-ratio and diameters in the nanometer range. Due to its remarkable mechanical strength, large area-to-volume ratio, optical transparency and solution processability it has been widely used as a scaffold or binder for electronically active materials in applications such as batteries, supercapacitors and optoelectronics.

The focus of this thesis is on flexible devices based on conductive polymers and can be divided into two parts: (1) Composite materials of nanofibrillated cellulose and the conductive polymer PEDOT:PSS and (2) patterning of vapor phase polymerized conductive polymers. In the first part, it is demonstrated how the combination of cellulose and conductive polymers can be used to make electronic materials of various form factors and functionality. Thick, freestanding and flexible “papers” are used to realize electrochemical devices such as transistors and supercapacitors while lightweight, porous and elastic aerogels are used for sensor applications. The second focus of the thesis is on a novel method of patterning conductive polymers produced by vapor phase polymerization using UV-light. This method is used to realize flexible electrochromic smart windows with high-resolution images and tunable optical contrast.

Ort, förlag, år, upplaga, sidor
Linköping: Linköping University Electronic Press, 2017. s. 73
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1845
Nyckelord
Organic electronics, conductive polymers, nanocellulose, nanofibrillated cellulose, composite materials, paper electronics, flexible electronics
Nationell ämneskategori
Annan fysik
Identifikatorer
urn:nbn:se:liu:diva-136518 (URN)10.3384/diss.diva-1089149 (DOI)978-91-7685-542-3 (ISBN)
Disputation
2017-05-19, K3, Kåkenhus, Campus Norrköping, Norrköping, 10:15 (Engelska)
Opponent
Handledare
Forskningsfinansiär
Knut och Alice Wallenbergs Stiftelse, KAW 2011.0050Stiftelsen för strategisk forskning (SSF), GMT14-0058
Tillgänglig från: 2017-05-04 Skapad: 2017-04-18 Senast uppdaterad: 2019-10-11Bibliografiskt granskad

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