Low voltage organic transistors with water-processed gum arabic dielectric

Seck, Mamadou; Mohammadian, Navid; Diallo, Abdou Karim; Faraji, Sheida; Saadi, Meriem; Erouel, Mohsen; Ly, El Hadji Babacar; Khirouni, K.; Majewski, Leszek A.

doi:10.1016/j.synthmet.2020.116447

Cited by 17 publications

(15 citation statements)

References 46 publications

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“…It plays an important role in the OFET device due to its capacitor mission. In order to operate OFETs at low voltages, a dielectric layer with high dielectric constant (so-called high-k) is essential [75,76]. The last component is the electrodes, which are gate (G), source (S) and drain (D).…”

Section: Fundamental Principles Of Ofetsmentioning

confidence: 99%

A Review on Solution-Processed Organic Phototransistors and Their Recent Developments

et al. 2022

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Today, more disciplines are intercepting each other, giving rise to “cross-disciplinary” research. Technological advancements in material science and device structure and production have paved the way towards development of new classes of multi-purpose sensory devices. Organic phototransistors (OPTs) are photo-activated sensors based on organic field-effect transistors that convert incident light signals into electrical signals. The organic semiconductor (OSC) layer and three-electrode structure of an OPT offer great advantages for light detection compared to conventional photodetectors and photodiodes, due to their signal amplification and noise reduction characteristics. Solution processing of the active layer enables mass production of OPT devices at significantly reduced cost. The chemical structure of OSCs can be modified accordingly to fulfil detection at various wavelengths for different purposes. Organic phototransistors have attracted substantial interest in a variety of fields, namely biomedical, medical diagnostics, healthcare, energy, security, and environmental monitoring. Lightweight and mechanically flexible and wearable OPTs are suitable alternatives not only at clinical levels but also for point-of-care and home-assisted usage. In this review, we aim to explain different types, working mechanism and figures of merit of organic phototransistors and highlight the recent advances from the literature on development and implementation of OPTs for a broad range of research and real-life applications.

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Section: Fundamental Principles Of Ofetsmentioning

confidence: 99%

A Review on Solution-Processed Organic Phototransistors and Their Recent Developments

et al. 2022

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“…Most of these reports with natural dielectrics have demonstrated transistors with thermally evaporated organic semiconductors (OSCs) such as pentacene as an active layer, and reports of solution-processed OSCs with these dielectric combinations are scarce. 30,33 In this paper, we report high-performance, flexible OFET devices with a HfO 2 /gelatin bilayer gate dielectric and TIPSpentacene as an active layer. TIPS-pentacene is a widely studied semiconductor due to its properties such as high performance, flexibility, and air stability.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, various biopolymers and nature-inspired materials have emerged as vital components in the fabrication of eco-friendly devices. ,− These materials have intrinsic advantages of bioadhesion, biodegradability, biocompatibility, and no need for chemical synthesis, making them suitable for sustainable electronics. Several plant- or animal-based proteins such as gelatin, cellulose, chitosan, shellac, silk fibroin, chicken egg albumen, adenine, keratin, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Table summarizes the performance of some recently reported p-channel OFETs with pristine natural proteins or with a bilayer of high- k dielectrics along with their additional functionalities, if any. Most of these reports with natural dielectrics have demonstrated transistors with thermally evaporated organic semiconductors (OSCs) such as pentacene as an active layer, and reports of solution-processed OSCs with these dielectric combinations are scarce. , …”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Flexible Organic Transistors with a High-k/Natural Protein Bilayer Gate Dielectric for Circuit and Sensing Applications

Konwar

Saxena

Raghuwanshi

et al. 2022

ACS Appl. Electron. Mater.

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Organic field-effect transistors (OFETs) have opened up new possibilities as key elements for skinlike intelligent systems, due to the capability of possessing multiple functionalities. Here, multifunctional OFET devices based on gelatin, a natural biopolymer gate dielectric, and TIPS-pentacene as an organic semiconductor are extensively explored. Gelatin is combined with a thin high-k HfO2 dielectric layer deposited by atomic layer deposition (ALD) to achieve a low leakage current and low-voltage operation. The natural biopolymer offers a better semiconductor:dielectric interface, leading to better charge conduction in the devices, along with an enhancement of sensing capabilities giving additional functionality. These fabricated flexible OFET devices exhibit excellent electrical characteristics with a high field-effect mobility reaching over 2 cm2/(V s) (extracted with C i at 1 kHz), a low subthreshold swing (SS) of ∼200 mV/dec, and a high current on–off (I on/I off) ratio at a low operating voltage of −5 V with excellent electrical and mechanical stability. Moreover, circuit and multiparameter sensing capabilities for visible and UV light, as well as for humidity and breath rate, have been successfully demonstrated for these devices. Our results indicate that these multifunctional OFET devices can open up a plethora of opportunities for practical applications such as real-time health and environmental monitoring.

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“…Regarding gate dielectrics, eco-friendly materials that possess high dielectric constants have gained much attention for use in high performance OFETs with low operating voltages. 22 Thus, natural materials that could be found in living organisms, such as silk, 23 gelatin, [24][25][26] almond gum, 27 gum arabic, 28 cellulose, 29 cyanoethylated pullulan, 30 sugars, 3 and hair keratin, 31 have been applied as green gate dielectrics.…”

Section: Introductionmentioning

confidence: 99%

Brewers’ spent grain (BSG)-based green dielectric materials for low-voltage operating solution-processed organic field-effect transistors

et al. 2022

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Low voltage organic transistors with water-processed gum arabic dielectric

Cited by 17 publications

References 46 publications

A Review on Solution-Processed Organic Phototransistors and Their Recent Developments

A Review on Solution-Processed Organic Phototransistors and Their Recent Developments

Multifunctional Flexible Organic Transistors with a High-k/Natural Protein Bilayer Gate Dielectric for Circuit and Sensing Applications

Brewers’ spent grain (BSG)-based green dielectric materials for low-voltage operating solution-processed organic field-effect transistors

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