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Low-voltage ambipolar polyelectrolyte-gated organic thin film transistors
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0001-5154-0291
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik.ORCID-id: 0000-0001-8845-6296
2012 (Engelska)Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 100, nr 18, s. 183302-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Organic transistors that use polyelectrolytes as gate insulators can be driven at very low voltages (andlt;1 V). The low operating voltage is possible thanks to the formation of electric double layers upon polarization, which generates large electric fields at the critical interfaces in the device structure. In this work, we use a semiconducting blend (of a high electron affinity polymer and a low ionization potential one) in conjunction with a solid polyelectrolyte insulator to fabricate low-voltage ambipolar organic transistors. For both n- and p-channel operation, we use a polycation with readily mobile-yet large enough to limit bulk doping of the semiconductor-counterions.

Ort, förlag, år, upplaga, sidor
American Institute of Physics (AIP) , 2012. Vol. 100, nr 18, s. 183302-
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:liu:diva-77731DOI: 10.1063/1.4709484ISI: 000303598600055OAI: oai:DiVA.org:liu-77731DiVA, id: diva2:529446
Anmärkning
Funding Agencies|EU through the EC|212311|Swedish Government (Advanced Functional Materials)||Swedish Foundation for Strategic Research (OPEN)||Knut and Alice Wallenberg Foundation||Onnesjo Foundation||Tillgänglig från: 2012-05-30 Skapad: 2012-05-28 Senast uppdaterad: 2017-12-07
Ingår i avhandling
1. Upscaling Organic Electronic Devices
Öppna denna publikation i ny flik eller fönster >>Upscaling Organic Electronic Devices
2015 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Conventional electronics based on silicon, germanium, or compounds of gallium require prohibitively expensive investments. A state-of-the-art microprocessor fabrication facility can cost up to $15 billion while using environmentally hazardous processes. In that context, the discovery of solution-processable conducting (and semiconducting) polymers stirred up expectations of ubiquitous electronics because it enables the mass-production of devices using well established high-volume printing techniques.

In essence, this thesis attempts to study the characteristics and applications of thin conducting polymer films (<200 nm), and scale them up to thick-films (>100 μm). First, thin-films of organic materials were combined with an electric double layer capacitor to decrease the operating voltage of organic field effect transistors. In addition, ionic current-rectifying diodes membranes were integrated inside electrochromic displays to increase the device’s bistability and obviate the need for an expensive addressing backplane.

This work also shows that it is possible to forgo the substrate and produce a self-standing electrochromic device by compositing the same water-processable material with nanofibrillated cellulose (plus a whitening pigment and high-boiling point solvents). In addition, we investigated the viability of these (semi)conducting polymer nanopaper composites in a variety of applications. This material exhibited an excellent combined electronic-ionic conductivity. Moreover, the conductivities in this easy-to-process composite remained constant within a wide range of thicknesses. Initially, this (semi)conducting nanopaper composite was used to produce electrochemical transistors with a giant transconductance (>1 S). Subsequently, it was used as electrodes to construct a supercapacitorwhose capacitance exceeds 1 F.

Ort, förlag, år, upplaga, sidor
Linköping: Linköping University Electronic Press, 2015. s. 62
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1711
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
urn:nbn:se:liu:diva-122022 (URN)10.3384/diss.diva-122022 (DOI)978-91-7685-929-2 (ISBN)
Disputation
2015-11-13, Resursen, Pronova, Norrköping Konferens, St Persgatan 19, Norrköping, 10:15 (Engelska)
Opponent
Handledare
Tillgänglig från: 2015-10-16 Skapad: 2015-10-16 Senast uppdaterad: 2019-11-15Bibliografiskt granskad

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