Enhanced solvent resistance and electrical performance of electrohydrodynamic jet printed PEDOT:PSS composite patterns: effects of hardeners on the performance of organic thin-film transistors

Tang, Xiaowu; Kwon, Hyeokjin; Ye, Heqing; Kim, Jae Young; Lee, Jaewoong; Jeong, Yong Jin; Kim, Se Hyun

doi:10.1039/c9cp04864b

Cited by 16 publications

(11 citation statements)

References 28 publications

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“…Conductive composite inks for EHD printing were prepared from mixing PEDOT:PSS, Triton X-100, and dimethylsulfoxide (DMSO), all of which contributed to the conductivity enhancement and simple jetting behavior during the EHD printing. 40 Hereafter, unless otherwise specified, PEDOT:PSS composites were prepared with DMSO (1:0.2 volume ratio) and Triton X-100 (0.1 wt %). Work function engineering of conductive composite electrodes was attempted by injecting Nafion for p-type electrodes and ethanolamine for n-type electrodes in the PEDOT:PSS composite inks.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Direct Printing of Asymmetric Electrodes for Improving Charge Injection/Extraction in Organic Electronics

Tang

Kwon

Hong

et al. 2020

ACS Appl. Mater. Interfaces

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Engineering the energy levels of organic conducting materials can be useful for developing high-performance organic field-effect transistors (OFETs), whose electrodes must be well controlled to facilitate easy charge carrier transport from the source to drain through an active channel. However, symmetric source and drain electrodes that have the same energy levels are inevitably unfavorable for either charge injection or charge extraction. In this study, asymmetric source and drain electrodes are simply prepared using the electrohydrodynamic (EHD)-jet printing technique after the careful work function engineering of organic conducting material composites. Two types of additives effectively tune the energy levels of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate-based composites. These solutions are alternately patterned using the EHD-jet printing process, where the use of an electric field makes fine jet control that enables to directly print asymmetric electrodes. The asymmetric combination of EHD-printed electrodes helps in obtaining advanced charge transport properties in p-type and n-type OFETs, as well as their organic complementary inverters. This strategy is believed to provide useful guidelines for the facile patterning of asymmetric electrodes, enabling the desirable properties of charge injection and extraction to be achieved in organic electronic devices.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Direct Printing of Asymmetric Electrodes for Improving Charge Injection/Extraction in Organic Electronics

Tang

Kwon

Hong

et al. 2020

ACS Appl. Mater. Interfaces

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“…A thorough understanding of its application will open up more creative and interesting applications including displays, [ 148 ] transistors, [ 149 ] lithography, [ 21,150 ] nano electromechanical systems (NEMS)/micro electromechanical systems (MEMS) devices, [ 115 ] sensors, [ 79,151 ] surface functionalization, [ 129 ] wearable electronics, [ 152 ] and so forth. Further, due to its relative ease of operation and set‐up, EHD has the potential to be integrated into larger systems.…”

Section: Discussionmentioning

confidence: 99%

Electrohydrodynamic Jet Printing: Introductory Concepts and Considerations

Mkhize

Bhaskaran

2021

Small Science

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Electrohydrodynamic (EHD) jet printing is an emerging technique in the field of additive manufacturing. Due to its versatility in the inks it can print, and most importantly, the printing resolution it can achieve, it is rapidly gaining favor for application in the manufacture of electronic devices, sensors, and displays among others. Although it is an affordable and accessible manufacturing process, it does require excellent operational understanding to achieve high resolution printing of up to 50 nm as reported in literature. In this review, three main aspects are considered, namely, the ink properties, the printer system itself (including design, nozzle dimensions, applied potential, and others), and the substrate onto which printing is being carried out. Knowing how all these factors can be manipulated and brought together allows the users of EHD printing to achieve extraordinary resolution and consistent results. The review is concluded with a brief discussion on where one can see the potential for development in this field of research.

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“…Among them, PDMS are suitable for EHD printed electronics. Recent studies focus on fabricating flexible pressure and strain sensor array [143,144], ion-gel-based transistor [145], flexible electrodes [146][147][148], organic thin-film transistor (OTFT) [149,150] etc. Although PEDOT: PSS is commonly used in printed electronics, the ink properties, geometrical pattern and array can be further optimized for targeted applications and multi-modal sensor integration.…”

Section: Polymersmentioning

confidence: 99%

“…These 3DP techniques have already been demonstrated as effective methods in physical sensors fabrication, with many sensor devices successfully fabricated. The 3DP physical sensors include tactile (touch sensors) [173,204], acoustic sensors [205,206], microcantilever sensors [207], transistors [145,[148][149][150]208,209], strain sensors [143,171,172,210], pressure sensors [66,135,144,151,154,170,211,212] and (piezo resistance, piezoelectricity, capacitance, triboelectricity), photosensors [213][214][215][216]. etc.…”

Section: Electronic 421 Physical Sensormentioning

confidence: 99%

High Precision 3D Printing for Micro to Nano Scale Biomedical and Electronic Devices

et al. 2022

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Three dimensional printing (3DP), or additive manufacturing, is an exponentially growing process in the fabrication of various technologies with applications in sectors such as electronics, biomedical, pharmaceutical and tissue engineering. Micro and nano scale printing is encouraging the innovation of the aforementioned sectors, due to the ability to control design, material and chemical properties at a highly precise level, which is advantageous in creating a high surface area to volume ratio and altering the overall products’ mechanical and physical properties. In this review, micro/-nano printing technology,mainly related to lithography, inkjet and electrohydrodynamic (EHD) printing and their biomedical and electronic applications will be discussed. The current limitations to micro/-nano printing methods will be examined, covering the difficulty in achieving controlled structures at the miniscule micro and nano scale required for specific applications.

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Enhanced solvent resistance and electrical performance of electrohydrodynamic jet printed PEDOT:PSS composite patterns: effects of hardeners on the performance of organic thin-film transistors

Abstract: The addition of hardeners to the PEDOT:PSS composites enhances both electrical and physical properties to satisfy the requirements for electrode usages in organic electronic devices.

Cited by 16 publications

References 28 publications

Direct Printing of Asymmetric Electrodes for Improving Charge Injection/Extraction in Organic Electronics

Direct Printing of Asymmetric Electrodes for Improving Charge Injection/Extraction in Organic Electronics

Electrohydrodynamic Jet Printing: Introductory Concepts and Considerations

High Precision 3D Printing for Micro to Nano Scale Biomedical and Electronic Devices

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