Printed all-polymer electrochemical transistors on patterned ion conducting membranes

Kaihovirta, Nikolai; Mäkelä, Tapio; He, Xuehan; Wikman, Carl-Johan; Wilén, Carl‐Eric; Österbacka, Ronald

doi:10.1016/j.orgel.2010.04.025

Cited by 31 publications

(26 citation statements)

References 18 publications

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“…A printed ECT on an ion-conducting membrane has been demonstrated to operate as a WORM memory. [ 197 ] Similar memory operation of the reported inkjetted ECT on paper should also be possible. [ 145 ] There have been very few examples of memory devices on paper, excluding the simpler mechanical types of storage devices, such as simple punched cards or paper tapes, which were once widely used as data storage for minicomputers.…”

Section: Electronic Memory Devicesmentioning

confidence: 80%

Paper Electronics

Tobjörk¹,

Österbacka²

2011

Advanced Materials

Self Cite

1,214

1,040

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Paper is ubiquitous in everyday life and a truly low-cost substrate. The use of paper substrates could be extended even further, if electronic applications would be applied next to or below the printed graphics. However, applying electronics on paper is challenging. The paper surface is not only very rough compared to plastics, but is also porous. While this is detrimental for most electronic devices manufactured directly onto paper substrates, there are also approaches that are compatible with the rough and absorptive paper surface. In this review, recent advances and possibilities of these approaches are evaluated and the limitations of paper electronics are discussed.

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Section: Electronic Memory Devicesmentioning

confidence: 80%

Paper Electronics

Tobjörk¹,

Österbacka²

2011

Advanced Materials

Self Cite

1,214

1,040

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“…However, thin film organic transistors gated via a solid or gelled electrolyte layer have proven to be a promising robust alternative to achieve low driving voltages. There are two kinds of electrolyte-gated organic thin film transistors; electrolyte-gated organic field-effect transistors (EGOFET) [5][6][7] and organic electrochemical transistors (OECT) [8][9][10][11][12]. These two transistor types are not only governed by different switching mechanisms but they also exhibit differences in device characteristics and opportunities regarding device manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Fast-switching all-printed organic electrochemical transistors

Ersman¹,

Nilsson²,

Kawahara

et al. 2013

Organic Electronics

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Symmetric and fast (~ 5 ms) on-to-off and off-to-on drain current switching characteristics have been obtained in screen printed organic electrochemical transistors (OECT) including PEDOT:PSS (poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid)) as the active transistor channel material. Improvement of the drain current switching characteristics is made possible by including a carbon conductor layer on top of PEDOT:PSS at the drain electrode that is in direct contact with both the channel and the electrolyte of the OECT. This carbon conductor layer suppresses the effects from a reduction front that is generated in these PEDOT:PSS-based OECTs. In the off-state of these devices this reduction front slowly migrate laterally into the PEDOT:PSS drain electrode, which make off-to-on switching slow. The OECT including carbon electrodes was manufactured using only standard printing process steps and may pave the way for fully integrated organic electronic systems that operate at low voltages for applications such as logic circuits, sensors and active matrix addressed displays.

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“…[2][3][4][5] The fabrication of the various layers in OLEDs is done by vacuum processing that can be quite cost and energy extensive, but an alternative organic semiconductor -the conjugated polymer -offers the important advantage of solution processing that can be extremely efficient, particularly if executed in a roll-to-roll fashion. [6][7][8][9][10][11] Unfortunately, it has proven difficult to attain a stable p-n junction in conjugated polymer materials, as the dopant counter-ions (that stabilize the doping) typically are mobile and tend to diffuse in the soft, disordered and often porous conjugated polymer matrix with a concomitant dissipation of the p-n junction doping structure. [12][13][14] The light-emitting electrochemical cell (LEC) comprises a blend of a conjugated polymer and mobile ions as the active material sandwiched between two electrodes.…”

Section: Introductionmentioning

confidence: 99%

On-demand photochemical stabilization of doping in light-emitting electrochemical cells

Tang

Edman

2011

Electrochimica Acta

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A highly functional p-n junction doping structure can be realized within a light-emitting electrochemical cell under applied voltage via ion redistribution and electrochemical doping. This doping structure will however dissipate when the formation voltage is removed due to the mobility of the dopant counter-ions. A number of concepts aimed at a spatial immobilization of the ions and the related stabilization of the doping structure have been presented, but they all suffer from long and poorly controlled stabilization periods and/or unpractical operational conditions. Here, we introduce a markedly fast and easy-to-control stabilization procedure involving the inclusion of a UV-sensitive photo-initiator compound into a carefully tuned active material in an light-emitting electrochemical cell device, and demonstrate that it is possible to cross-link the ions and stabilize the p-n junction doping via a short UV exposure step executed at room temperature.

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Printed all-polymer electrochemical transistors on patterned ion conducting membranes

Cited by 31 publications

References 18 publications

Paper Electronics

Paper Electronics

Fast-switching all-printed organic electrochemical transistors

On-demand photochemical stabilization of doping in light-emitting electrochemical cells

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