Modification of the charge transport properties of the copper phthalocyanine/poly(vinyl alcohol) interface using cationic or anionic surfactant for field-effect transistor performance enhancement

Jastrombek, Diana; Nawaz, Ali; Koehler, Marlus; Meruvia, Michelle S.; Hümmelgen, Ivo A.

doi:10.1088/0022-3727/48/33/335104

Cited by 11 publications

(10 citation statements)

References 51 publications

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“…[ 12 ] In this regard, polymer dielectrics show more desirable and advantageous properties, including high degree of mechanical flexibility, low film density, controllable molecular structure, ability to be processed via low‐temperature and solution processing techniques, and cost‐effectiveness. [ 170 ] The most commonly used flexible and stretchable polymer dielectrics include poly(α‐methylstyrene) (PαMS), [ 171 ] PMMA, [ 172 ] PVA, [ 173 ] PS, [ 174,175 ] and PDMS. [ 176 ] One of the important characteristics of a polymer dielectric material is its dielectric constant, which is typically required to be high enough so that the OFET devices can be operated at low voltages, in compliance with the requirements of next‐generation flexible and wearable applications.…”

Section: Flexible Ofetsmentioning

confidence: 99%

Impact of Planar and Vertical Organic Field‐Effect Transistors on Flexible Electronics

et al. 2023

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According to the forecast of Allied Market Research, the flexible electronics market is projected to reach $42.48 billion by 2027. It is estimated to revolutionize the lighting technology, power integration displays, and health monitoring systems. The popularity of flexible electronics is mainly due to the unique benefits of organic materials and devices that offer cost-effectiveness, low-temperature processability, mechanical softness, and shape adaptability, [5][6][7] which are difficult to obtain with traditional, complementary-metal-oxide-semiconductor (CMOS)-based rigid systems. [8] Over the past two decades, research interest in flexible electronic systems has grown exponentially, driven by the requirements of interface softness and shape adaptability for electronics used in Internet-of-Things (IoT), [9] human-machine interfaces, [10] and advanced healthcare. [11] Although significant progress has been made in academia, the practical application of flexible electronics in the industry is limited. Presently, thin-film photovoltaics and flexible displays mainly contribute to the flexible electronics market, with a noticeable presence held by radio frequency identification (RFID) tags and medical X-ray imagers. [12] Indeed, much of the success of present flexible electronic systems rely on the performance and reliability of thin-film The development of flexible and conformable devices, whose performance can be maintained while being continuously deformed, provides a significant step toward the realization of next-generation wearable and e-textile applications. Organic field-effect transistors (OFETs) are particularly interesting for flexible and lightweight products, because of their low-temperature solution processability, and the mechanical flexibility of organic materials that endows OFETs the natural compatibility with plastic and biodegradable substrates. Here, an in-depth review of two competing flexible OFET technologies, planar and vertical OFETs (POFETs and VOFETs, respectively) is provided. The electrical, mechanical, and physical properties of POFETs and VOFETs are critically discussed, with a focus on four pivotal applications (integrated logic circuits, light-emitting devices, memories, and sensors). It is pointed out that the flexible function of the relatively newer VOFET technology, along with its perspective on advancing the applicability of flexible POFETs, has not been reviewed so far, and the direct comparison regarding the performance of POFET-and VOFET-based flexible applications is most likely absent. With discussions spanning printed and wearable electronics, materials science, biotechnology, and environmental monitoring, this contribution is a clear stimulus to researchers working in these fields to engage toward the plentiful possibilities that POFETs and VOFETs offer to flexible electronics.

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Section: Flexible Ofetsmentioning

confidence: 99%

Impact of Planar and Vertical Organic Field‐Effect Transistors on Flexible Electronics

et al. 2023

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“…21 Briefly, Al gate was evaporated onto glass substrate and PVA was thermally and UV treated to obtain cross-linked PVA (cr-PVA) after which Al layer was covered by spin-coating cr-PVA on top of it. SDS (supplied by Sigma-Aldrich, ACS Reagent > 99%) was dissolved in water at a concentration of 3.0 mg/mL and stirred for one hour at 60°C.…”

Section: Methodsmentioning

confidence: 99%

“…Treatments have recently successfully solved this problem in devices based on p-type channel semiconductors, poly(3-hexylthiophene-2,5-diyl) [17][18][19] and copper phthalocyanine. 20,21 As transistor size gets smaller, many undesirable effects come into play and nanometrically small defects and traps play a significant role, impairing device performance.…”

Section: Introductionmentioning

confidence: 99%

Poly(Vinyl Alcohol) Gate Dielectric Treated With Anionic Surfactant in C60 Fullerene-Based n-Channel Organic Field Effect Transistors

2016

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We report on the preparation and performance enhancement of n-type low-voltage organic field effect transistors (FETs) based on cross-linked poly(vinyl alcohol) (cr-PVA) as gate dielectric and C 60 fullerene as channel semiconductor. Transistors were prepared using bottom-gate top-contact geometry and exhibited field-effect mobility (μ FET ) of 0.18 cm 2 V -1 s -1 . Treatment of the gate dielectric surface with an anionic surfactant, sodium dodecyl sulfate (SDS), passivates the positively charged defects present on the surface of cr-PVA, hence resulting in overall transistor performance improvement with an increase in μ FET to 1.05 cm 2 V -1 s -1 and additional significant improvements in dielectric capacitance, transistor on/off current ratio and transconductance.

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“…For instance, Nawaz et al reported that the treatment of cross-linked PVA layer with a cationic surfactant, hexadecyltrimethylammonium bromide, increases the specific capacitance by ▫50%. [334] On the other hand, by treating the cross-linked PVA layer using an anionic surfactant, sodium dodecyl sulfate, Jastrombek et al demonstrated an increase in C i from 27.50 to 32.50 nF cm −2 and decrease in OFET subthreshold swing (SS) from −0.77 to −0.29 V per dec. [335] Furthermore, de Col et al proposed the treatment of cross-linked PVA layer using an environmentally friendly reducing agent, ascorbic acid (vitamin C), which assisted in improving C i from 17.81 to 19.19 nF cm −2 and OFET SS from −1.08 to −0.76 V per dec. [336] Cellulose, the most abundant biomaterial on earth, is a polymer biodegradable by microorganisms and is basically insoluble in water due to strong intermolecular hydrogen bonding. [338] Petritz et al reported thin films of cellulose on alumina as a hybrid high-κ dielectric layer for applications in green electronics.…”

Section: Gate Dielectrics and Electrolytesmentioning

confidence: 99%

“…[ 334 ] On the other hand, by treating the cross‐linked PVA layer using an anionic surfactant, sodium dodecyl sulfate, Jastrombek et al. demonstrated an increase in C i from 27.50 to 32.50 nF cm −2 and decrease in OFET subthreshold swing ( SS ) from −0.77 to −0.29 V per dec. [ 335 ] Furthermore, de Col et al. proposed the treatment of cross‐linked PVA layer using an environmentally friendly reducing agent, ascorbic acid (vitamin C), which assisted in improving C i from 17.81 to 19.19 nF cm −2 and OFET SS from −1.08 to −0.76 V per dec. [ 336 ]…”

Section: Biodegradable Materialsmentioning

confidence: 99%

Biodegradable Materials for Transient Organic Transistors

Stephen

Nawaz

Lee

et al. 2022

Adv Funct Materials

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Electronic devices that can physically disappear in a controlled manner without harmful by-products unveil a wide range of opportunities in medical devices, environmental monitoring, and next-generation consumer electronics. Their property of transience is indispensable for mitigating the global problem of electronic waste accumulation. Additionally, transient technologies that are biocompatible and can be biologically resorbed are of great potential for applications in temporary medical implants, since it eliminates the need for expensive device recovery surgery. Transistors are the key building blocks of modern electronics, and their fabrication using organic materials is beneficial due to their low cost, unprecedented flexibility and facile processing. This contribution reviews the technological application of biodegradable materials in four major classes of organic transistors, namely organic field-effect transistors (OFETs), organic synaptic transistors, electrolyte-gated OFETs, and organic electrochemical transistors. The fundamental biodegradation mechanism is discussed in detail, followed by a perspective of various biodegradable materials utilized as active semiconductors, dielectrics, electrolytes and substrates in the various types of organic transistor devices. This contribution comprehensively discusses the role and application of biodegradable materials in all of the key modern-day organic transistors, highlighting their unique properties that allow the fabrication of biodegradable, eco-friendly, and sustainable devices.

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Modification of the charge transport properties of the copper phthalocyanine/poly(vinyl alcohol) interface using cationic or anionic surfactant for field-effect transistor performance enhancement

Cited by 11 publications

References 51 publications

Impact of Planar and Vertical Organic Field‐Effect Transistors on Flexible Electronics

Impact of Planar and Vertical Organic Field‐Effect Transistors on Flexible Electronics

Poly(Vinyl Alcohol) Gate Dielectric Treated With Anionic Surfactant in C60 Fullerene-Based n-Channel Organic Field Effect Transistors

Biodegradable Materials for Transient Organic Transistors

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