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Ultra-low voltage air-stable polyelectrolyte gated n-type organic thin film transistors
Linköpings universitet, Institutionen för teknik och naturvetenskap. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för teknik och naturvetenskap. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0002-0302-226X
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0001-5154-0291
Linköpings universitet, Institutionen för teknik och naturvetenskap. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0001-8845-6296
2011 (engelsk)Inngår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 99, nr 6, s. 063305-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Complementary circuits, processing digital signals, are a cornerstone of modern electronics. Such circuits require both p-and n-type transistors. Polyelectrolytes are used as gate insulators in organic thin film transistors (OTFTs) to establish an electric double layer capacitor upon gate bias that allows low operational voltages (andlt;1 V). However, stable and low-voltage operating n-channel organic transistors have proven difficult to construct. Here, we report ultra-low voltage n-channel organic polymer-based transistors that are stable in ambient atmosphere. Our n-type OTFTs exhibit on/off ratios around 10(3) for an applied drain potential as low as 0.1 V. Since small ions are known to promote electrochemical reactions within the semiconductors channel bulk and typically slow down the transistor, we use a solid polycationic gate insulator that suppresses penetration of anions into the n-channel semiconductor. As a result, our n-channel OTFTs switch on in under 5 ms and off in less than 1 ms.

sted, utgiver, år, opplag, sider
American Institute of Physics (AIP) , 2011. Vol. 99, nr 6, s. 063305-
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Identifikatorer
URN: urn:nbn:se:liu:diva-70331DOI: 10.1063/1.3626587ISI: 000293857700076OAI: oai:DiVA.org:liu-70331DiVA, id: diva2:438346
Merknad
|Swedish Government||Swedish Foundation for Strategic Research (OPEN)||Knut and Alice Wallenberg Foundation||Onnesjo Foundation||Tilgjengelig fra: 2011-09-02 Laget: 2011-09-02 Sist oppdatert: 2017-12-08
Inngår i avhandling
1. Upscaling Organic Electronic Devices
Åpne denne publikasjonen i ny fane eller vindu >>Upscaling Organic Electronic Devices
2015 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Linköping: Linköping University Electronic Press, 2015. s. 62
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1711
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Identifikatorer
urn:nbn:se:liu:diva-122022 (URN)10.3384/diss.diva-122022 (DOI)978-91-7685-929-2 (ISBN)
Disputas
2015-11-13, Resursen, Pronova, Norrköping Konferens, St Persgatan 19, Norrköping, 10:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2015-10-16 Laget: 2015-10-16 Sist oppdatert: 2019-11-15bibliografisk kontrollert

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