Water-stable organic transistors and their application in chemical and biological sensors

Roberts, Mark; Mannsfeld, Stefan C. B.; Queraltó, Núria; Reese, Colin; Locklin, Jason; Knoll, Wolfgang; Bao, Zhenan

doi:10.1073/pnas.0802105105

Cited by 338 publications

(328 citation statements)

References 38 publications

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“…[50][51][52] A series of devices were dipped in mq-water for different time periods. After each immersion the device was blown with N 2 to remove any water droplets, and subsequently, they were electrically characterized.…”

Section: Resultsmentioning

confidence: 99%

Single Crystal‐Like Performance in Solution‐Coated Thin‐Film Organic Field‐Effect Transistors

Pozo

Fabiano

Pfattner

et al. 2015

Adv Funct Materials

122

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In electronics, the field-effect transistor (FET) is a crucial corner stone and successful integration of this semiconductor device into circuit applications requires stable and ideal electrical characteristics over a wide range of temperatures and environments. Solution processing, using printing or coating techniques, has been explored to manufacture organic field-effect transistors (OFET) on flexible carriers; enabling radically novel electronics applications. Ideal electrical characteristics, in organic materials, are typically only found in single crystals. Tiresome growth and manipulation of these hamper practical production of flexible OFETs circuits. To date, neither devices nor any circuits, based on solution-processed 2 OFETs, has exhibited an ideal set of characteristics similar or better than today's FET technology based on amorphous silicon (a-Si FETs). Here, we report bar-assisted meniscus shearing of dibenzo-tetrathiafulvalene to coat-process self-organized crystalline organic semiconducting domains with high reproducibility. Including these coatings as the channel in OFETs, we observe electric field-and temperature-independent charge carrier mobility and no bias stress effects. Further, we measure record-high gain in OFET inverters and exceptional operational stability in both air and water.

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Section: Resultsmentioning

confidence: 99%

Single Crystal‐Like Performance in Solution‐Coated Thin‐Film Organic Field‐Effect Transistors

Pozo

Fabiano

Pfattner

et al. 2015

Adv Funct Materials

122

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“…T ransparent organic semiconductors with high chargecarrier mobilities have been an important research target due to their broad applications in flat-panel displays 1,2 , radio-frequency identification tags 3,4 , complementary integrated circuits [5][6][7] and biological and medical applications [8][9][10][11][12][13] . The carrier mobility of organic semiconductor films is strongly influenced by the crystallinity, molecular packing structures of the organic thin films and charge traps at the gate dielectric/ semiconductor interface [14][15][16][17] .…”

mentioning

confidence: 99%

Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method

et al. 2014

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Organic semiconductors with higher carrier mobility and better transparency have been actively pursued for numerous applications, such as flat-panel display backplane and sensor arrays. The carrier mobility is an important figure of merit and is sensitively influenced by the crystallinity and the molecular arrangement in a crystal lattice. Here we describe the growth of a highly aligned meta-stable structure of 2,7-dioctyl[1]benzothieno [3,2-b][1]benzothiophene (C8-BTBT) from a blended solution of C8-BTBT and polystyrene by using a novel offcentre spin-coating method. Combined with a vertical phase separation of the blend, the highly aligned, meta-stable C8-BTBT films provide a significantly increased thin film transistor hole mobility up to 43 cm 2 Vs À 1 (25 cm 2 Vs À 1 on average), which is the highest value reported to date for all organic molecules. The resulting transistors show high transparency of 490% over the visible spectrum, indicating their potential for transparent, high-performance organic electronics.

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“…One of the most relevant features is the recently proven field-effect enhanced selectivity that allows for chiral differential detection at unprecedented low concentrations (18). OFET sensors can also work in water (19,20) as well as in the subvolt bias regime (20,21). Specificity relies on device structures that either involve enzymatic reactions [with FET electrochemical transduction (22)] or two-layer architectures, including a bioactive film deposited on top of the channel organic semiconductor (18,23,24).…”

mentioning

confidence: 99%

Interfacial electronic effects in functional biolayers integrated into organic field-effect transistors

Angione

Cotrone

Magliulo

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

110

102

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Biosystems integration into an organic field-effect transistor (OFET) structure is achieved by spin coating phospholipid or protein layers between the gate dielectric and the organic semiconductor. An architecture directly interfacing supported biological layers to the OFET channel is proposed and, strikingly, both the electronic properties and the biointerlayer functionality are fully retained. The platform bench tests involved OFETs integrating phospholipids and bacteriorhodopsin exposed to 1-5% anesthetic doses that reveal drug-induced changes in the lipid membrane. This result challenges the current anesthetic action model relying on the so far provided evidence that doses much higher than clinically relevant ones (2.4%) do not alter lipid bilayers' structure significantly. Furthermore, a streptavidin embedding OFET shows label-free biotin electronic detection at 10 parts-per-trillion concentration level, reaching state-of-the-art fluorescent assay performances. These examples show how the proposed bioelectronic platform, besides resulting in extremely performing biosensors, can open insights into biologically relevant phenomena involving membrane weak interfacial modifications.organic electronics | analytical bioassay | electronic biodetection

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Water-stable organic transistors and their application in chemical and biological sensors

Cited by 338 publications

References 38 publications

Single Crystal‐Like Performance in Solution‐Coated Thin‐Film Organic Field‐Effect Transistors

Single Crystal‐Like Performance in Solution‐Coated Thin‐Film Organic Field‐Effect Transistors

Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method

Interfacial electronic effects in functional biolayers integrated into organic field-effect transistors

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