Ultra-conformable Organic Field-Effect Transistors and circuits for epidermal electronic applications

Lai, Stefano; Zucca, Alessandra; Cosseddu, Piero; Greco, Francesco; Mattoli, Virgilio; Bonfiglio, Annalisa

doi:10.1016/j.orgel.2017.03.038

Cited by 45 publications

(40 citation statements)

References 35 publications

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“…[1][2][3][4] Such applications demand electronic devices with excellent mechanical flexibility, [5][6][7] good conformability, [8,9] ultralight weight, [10][11][12] and optical transparency under various types of external strain. [1][2][3][4] Such applications demand electronic devices with excellent mechanical flexibility, [5][6][7] good conformability, [8,9] ultralight weight, [10][11][12] and optical transparency under various types of external strain.…”

Section: Introductionmentioning

confidence: 99%

Omnidirectional Strain‐Independent Organic Transistors Integrated onto an Elastomer Template with a Spontaneously Formed Fingerprint‐Mimicking Microtopography

Choi

Baek

et al. 2019

Adv Elect Materials

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Here, a stretchable organic field‐effect transistor (OFET) that exhibits constant electrical performance irrespective of the strain direction is demonstrated. The device is integrated onto an elastomer template with randomly oriented wrinkles on its surface; these wrinkles are spontaneously formed because of the differences in the thermal–mechanical properties of the plastic layer and the underlying elastomer. To achieve this microtopography, a relatively hard polymer, Parylene C, is ad‐deposited onto an elastomer blended with polydimethylsiloxane and Ecoflex, resulting in PD‐flex. Consequently, this microtopography offers stable device operations of a dinaphtho[2,3‐b:2′,3′‐f ]thieno[3,2‐b]thiophene OFET array under 5% elongation irrespective of strain direction. Furthermore, the electrical performance is highly stable during 10 000 cycles of uniaxial strain, as verified by negligible modulation of the device's field‐effect mobility, threshold voltage, and drain‐current maximum. This approach allows nonstretchable device components to be relevant to stretchable electronics. More importantly, it is highly compatible to device alignment and provides stability under various kinds of mechanical deformations.

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Section: Introductionmentioning

confidence: 99%

Omnidirectional Strain‐Independent Organic Transistors Integrated onto an Elastomer Template with a Spontaneously Formed Fingerprint‐Mimicking Microtopography

Choi

Baek

et al. 2019

Adv Elect Materials

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“…Parylene is the general term for a series of poly( p ‐xylylene) polymers dielectrics. Parylene C, with the chlorine substitution has a useful combination of electrical and physical properties and has been widely used in a variety of organic electronics . A charge trap OFETM was fabricated using a dielectric bilayer of ultrathin AlOx and Parylene C films and the TIPS‐substituted Pentacene was used as semiconductor .…”

Section: Flexible Data Storage Devices Based On Transistor Structurementioning

confidence: 99%

Recent Advances of Flexible Data Storage Devices Based on Organic Nanoscaled Materials

Zhou

Mao

Ren

et al. 2018

Small

143

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Following the trend of miniaturization as per Moore's law, and facing the strong demand of next-generation electronic devices that should be highly portable, wearable, transplantable, and lightweight, growing endeavors have been made to develop novel flexible data storage devices possessing nonvolatile ability, high-density storage, high-switching speed, and reliable endurance properties. Nonvolatile organic data storage devices including memory devices on the basis of floating-gate, charge-trapping, and ferroelectric architectures, as well as organic resistive memory are believed to be favorable candidates for future data storage applications. In this Review, typical information on device structure, memory characteristics, device operation mechanisms, mechanical properties, challenges, and recent progress of the above categories of flexible data storage devices based on organic nanoscaled materials is summarized.

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“…Parylene, which are prepared by unique chemical vapor deposition strategy, holds potential in microelectronic integrated circuits, microelectromechanical systems, sensors, and bioelectronics because of its pinhole‐free conformal coating characteristic, chemical inertness, high insulating behavior, low moisture vapor transmission rate, and excellent biocompatibility . Inspired by its fascinating properties, Someya group have reported OFET‐based devices by using parylene as substrates, dielectric, and encapsulating layer, respectively .…”

Section: Integration Of Biocompatible Polymers Into Ofet‐based Sensorsmentioning

confidence: 99%

Integration of Biomaterials into Sensors Based on Organic Thin‐Film Transistors

Zhou

Huang

2018

Macromol. Rapid Commun.

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Sensors based on organic thin-film transistors (OTFTs) present various advantages, including high sensitivity and mechanical flexibility, thus possessing potential applications such as wearable devices and biomedical electronics for health monitoring, etc. However, such applications are partially limited by the biocompatibility, biodegradability, and sensitivity to target analytes of OTFT-based sensors, which can be improved by the incorporation of diverse biomaterials. This article presents a brief review from the viewpoint of the type of the integrated biomaterials, including naturally occurring biomacromolecules such as proteins, enzymes, and deoxyribonucleic acid, as well as biocompatible polymers such as polylactide, poly(lactide-co-glycolide), poly(ethylene glycol), cellulose, polydimethylsiloxane, parylene, etc. It is believed that future work in this field should be devoted to the selectivity, sensitivity, and stability improvement as well as the high-level integration and sophistication on the basis of the OTFT-based sensors for physical, chemical, and biological sensing applications.

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Ultra-conformable Organic Field-Effect Transistors and circuits for epidermal electronic applications

Cited by 45 publications

References 35 publications

Omnidirectional Strain‐Independent Organic Transistors Integrated onto an Elastomer Template with a Spontaneously Formed Fingerprint‐Mimicking Microtopography

Omnidirectional Strain‐Independent Organic Transistors Integrated onto an Elastomer Template with a Spontaneously Formed Fingerprint‐Mimicking Microtopography

Recent Advances of Flexible Data Storage Devices Based on Organic Nanoscaled Materials

Integration of Biomaterials into Sensors Based on Organic Thin‐Film Transistors

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