Threshold voltage control in organic thin film transistors with dielectric layer modified by a genetically engineered polypeptide

Dezieck, Alex; Acton, Orb; Leong, Kirsty; Ören, Ersin Emre; Ma, Hong; Tamerler, Candan; Sarıkaya, Mehmet; Jen, Alex K.‐Y.

doi:10.1063/1.3459978

Cited by 40 publications

(21 citation statements)

References 17 publications

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“…B) Current–voltage transfer curves obtained for pentacene OFETs modified with QBP assembled under basic (green diamond), neutral (blue circles), and acidic (red triangles) conditions. Reproduced with permission . Copyright 2010, AIP Publishing LLC.…”

Section: Dielectrics Surface Modification Strategies For Organic–biolmentioning

confidence: 99%

Tailoring Functional Interlayers in Organic Field‐Effect Transistor Biosensors

et al. 2014

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This review aims to provide an update on the development involving dielectric/organic semiconductor (OSC) interfaces for the realization of biofunctional organic field-effect transistors (OFETs). Specific focus is given on biointerfaces and recent technological approaches where biological materials serve as interlayers in back-gated OFETs for biosensing applications. Initially, to better understand the effects produced by the presence of biomolecules deposited at the dielectric/OSC interfacial region, the tuning of the dielectric surface properties by means of self-assembled monolayers is discussed. Afterward, emphasis is given to the modification of solid-state dielectric surfaces, in particular inorganic dielectrics, with biological molecules such as peptides and proteins. Special attention is paid on how the presence of an interlayer of biomolecules and bioreceptors underneath the OSC impacts on the charge transport and sensing performance of the device. Moreover, naturally occurring materials, such as carbohydrates and DNA, used directly as bulk gating materials in OFETs are reviewed. The role of metal contact/OSC interface in the overall performance of OFET-based sensors is also discussed.

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Section: Dielectrics Surface Modification Strategies For Organic–biolmentioning

confidence: 99%

Tailoring Functional Interlayers in Organic Field‐Effect Transistor Biosensors

et al. 2014

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“…Other groups have focused on tuning the charge of the insulator/ semiconductor interface or electric field by modifying the interfaces between the dielectric layer and semiconductor layer through the use of oxygen plasma irradiation, 8 UV ozone irradiation, 9 self-assembled monolayers (SAMs), 10,11 or organic materials with molecular polarity. 12 However, these methods could lead to changes in not only V TH but also in mobility, stability, and hysteresis, owing to the influence of charges within the gate dielectric. [13][14][15] Recently, Park et al reported that the flat-band voltage of metal insulator semiconductor (MIS) capacitors was correlated with the work function (W.F.)…”

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confidence: 99%

Control of threshold voltage in organic thin-film transistors by modifying gate electrode surface with MoOX aqueous solution and inverter circuit applications

Shiwaku

Yoshimura

Takeda

et al. 2015

Applied Physics Letters

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We controlled the threshold voltage of organic thin-film transistors (TFTs) by treating only the gate electrode surface with a MoOX aqueous solution and used them to build inverter circuits. The threshold voltage was changed by varying the concentration of the MoOX aqueous solution. A strong correlation between the work function of the gate electrode and the threshold voltage was observed. The threshold voltage of one of the two organic TFT devices in the inverter circuit was selectively changed by +2.3 V by reducing the concentration of the MoOx solution. We controlled the switching voltage of p-type organic inverter circuits and obtained excellent inverter characteristics. These results indicate that using a MoOx aqueous solution to control the threshold voltage is very useful for integrated circuits applications.

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“…Direct interfacing of biomolecules with an electronic transducer opens to wider scenarios and an interesting approach encompasses the use of DNA (14) as gate dielectric material or silk for conformal biointegrated electronics (15). Likewise, the modification of a silica surface with quartz binding polypeptides has been proposed to control the OFET turn-onbias (threshold voltage, V T ) (16).…”

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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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Threshold voltage control in organic thin film transistors with dielectric layer modified by a genetically engineered polypeptide

Cited by 40 publications

References 17 publications

Tailoring Functional Interlayers in Organic Field‐Effect Transistor Biosensors

Tailoring Functional Interlayers in Organic Field‐Effect Transistor Biosensors

Control of threshold voltage in organic thin-film transistors by modifying gate electrode surface with MoOX aqueous solution and inverter circuit applications

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

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