1
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Wang Q, Xiang C, Jiang X, Shi C, Wang Z, Huang L, Chi L. Amphiphilic Interface-Mediated Ion Doping for High Performance Organic Electrochemical Transistors with Hydrophobic Polymers. J Phys Chem Lett 2024; 15:7175-7182. [PMID: 38968158 DOI: 10.1021/acs.jpclett.4c01484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
An organic electrochemical transistor (OECT) is one of the promising devices for bioelectronics due to its high transconductance, encompassing low operation voltage, and good compatibility with aqueous conditions. Despite these advantages, the challenge of balancing ion penetration and electron transport remains a significant issue in OECTs. Herein, we present an amphiphilic interface modification strategy to successfully prepare OECTs in aqueous conditions based on a high-mobility hydrophobic polypyrrole derivative. An amphiphilic interface mixed with an amphiphilic polymer and the active layer markedly promotes ion penetration and results in a significant improvement in performance, with the switch time reduced from several seconds to nearly 100 ms and the transconductance increased by an order of magnitude. The high-performance OECTs fabricated by this method show promising applications in high-performance neuromorphic devices and ECG recording in advancing the field of electrochemical transistors.
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Affiliation(s)
- Qi Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Chuan Xiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Xingyu Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Cheng Shi
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Zi Wang
- Suzhou Laboratory, 388 Ruoshui Road, Suzhou, Jiangsu 215123, P. R. China
| | - Lizhen Huang
- Suzhou Laboratory, 388 Ruoshui Road, Suzhou, Jiangsu 215123, P. R. China
| | - Lifeng Chi
- Suzhou Laboratory, 388 Ruoshui Road, Suzhou, Jiangsu 215123, P. R. China
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2
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Merces L, Ferro LMM, Nawaz A, Sonar P. Advanced Neuromorphic Applications Enabled by Synaptic Ion-Gating Vertical Transistors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305611. [PMID: 38757653 PMCID: PMC11251569 DOI: 10.1002/advs.202305611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/07/2023] [Indexed: 05/18/2024]
Abstract
Bioinspired synaptic devices have shown great potential in artificial intelligence and neuromorphic electronics. Low energy consumption, multi-modal sensing and recording, and multifunctional integration are critical aspects limiting their applications. Recently, a new synaptic device architecture, the ion-gating vertical transistor (IGVT), has been successfully realized and timely applied to perform brain-like perception, such as artificial vision, touch, taste, and hearing. In this short time, IGVTs have already achieved faster data processing speeds and more promising memory capabilities than many conventional neuromorphic devices, even while operating at lower voltages and consuming less power. This work focuses on the cutting-edge progress of IGVT technology, from outstanding fabrication strategies to the design and realization of low-voltage multi-sensing IGVTs for artificial-synapse applications. The fundamental concepts of artificial synaptic IGVTs, such as signal processing, transduction, plasticity, and multi-stimulus perception are discussed comprehensively. The contribution draws special attention to the development and optimization of multi-modal flexible sensor technologies and presents a roadmap for future high-end theoretical and experimental advancements in neuromorphic research that are mostly achievable by the synaptic IGVTs.
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Affiliation(s)
- Leandro Merces
- Research Center for MaterialsArchitectures, and Integration of Nanomembranes (MAIN)Chemnitz University of Technology09126ChemnitzGermany
| | - Letícia Mariê Minatogau Ferro
- Research Center for MaterialsArchitectures, and Integration of Nanomembranes (MAIN)Chemnitz University of Technology09126ChemnitzGermany
| | - Ali Nawaz
- Center for Sensors and DevicesBruno Kessler Foundation (FBK)Trento38123Italy
| | - Prashant Sonar
- School of Chemistry and PhysicsQueensland University of Technology (QUT)BrisbaneQLD4000Australia
- Centre for Materials ScienceQueensland University of Technology2 George StreetBrisbaneQLD4000Australia
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3
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Song J, Liu H, Zhao Z, Lin P, Yan F. Flexible Organic Transistors for Biosensing: Devices and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2300034. [PMID: 36853083 DOI: 10.1002/adma.202300034] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Flexible and stretchable biosensors can offer seamless and conformable biological-electronic interfaces for continuously acquiring high-fidelity signals, permitting numerous emerging applications. Organic thin film transistors (OTFTs) are ideal transducers for flexible and stretchable biosensing due to their soft nature, inherent amplification function, biocompatibility, ease of functionalization, low cost, and device diversity. In consideration of the rapid advances in flexible-OTFT-based biosensors and their broad applications, herein, a timely and comprehensive review is provided. It starts with a detailed introduction to the features of various OTFTs including organic field-effect transistors and organic electrochemical transistors, and the functionalization strategies for biosensing, with a highlight on the seminal work and up-to-date achievements. Then, the applications of flexible-OTFT-based biosensors in wearable, implantable, and portable electronics, as well as neuromorphic biointerfaces are detailed. Subsequently, special attention is paid to emerging stretchable organic transistors including planar and fibrous devices. The routes to impart stretchability, including structural engineering and material engineering, are discussed, and the implementations of stretchable organic transistors in e-skin and smart textiles are included. Finally, the remaining challenges and the future opportunities in this field are summarized.
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Affiliation(s)
- Jiajun Song
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P. R. China
| | - Hong Liu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P. R. China
| | - Zeyu Zhao
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P. R. China
| | - Peng Lin
- Shenzhen Key Laboratory of Special Functional Materials and Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Feng Yan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P. R. China
- Research Institute of Intelligent Wearable Systems, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, P. R. China
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4
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He R, Lv A, Jiang X, Cai C, Wang Y, Yue W, Huang L, Yin XB, Chi L. Organic Electrochemical Transistor Based on Hydrophobic Polymer Tuned by Ionic Gels. Angew Chem Int Ed Engl 2023; 62:e202304549. [PMID: 37439325 DOI: 10.1002/anie.202304549] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/06/2023] [Accepted: 07/11/2023] [Indexed: 07/14/2023]
Abstract
Hydrophobic conjugated polymers have poor ionic transport property, so hydrophilic side chains are often grafted for their application as organic electrochemical transistors (OECTs). However, this modification lowers their charge transport ability. Here, an ionic gel interfacial layer is applied to improve the ionic transport while retaining the charge transport ability of the polymers. By using the ionic gels comprising gel matrix and ionic liquids as the interfacial layers, the hydrophobic polymer achieves the OECT feature with high transconductance, low threshold voltage, high current on/off ratio, short switching time, and high operational stability. The working mechanism is also revealed. Moreover, the OECT performance can be tuned by varying the types and ratios of ionic gels. With the proposed ionic gel strategy, OECTs can be effectively realized with hydrophobic conjugated polymers.
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Affiliation(s)
- Rongxiang He
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Renai Road, Suzhou, 215123, China
| | - Aifeng Lv
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Renai Road, Suzhou, 215123, China
| | - Xingyu Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Renai Road, Suzhou, 215123, China
| | - Chang Cai
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Yazhou Wang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Wan Yue
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Lizhen Huang
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Renai Road, Suzhou, 215123, China
| | - Xue-Bo Yin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Lifeng Chi
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Renai Road, Suzhou, 215123, China
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5
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Fan J, Parr S, Kang S, Gupta M. Point-of-care (POC) SARS-CoV-2 antigen detection using functionalized aerosol jet-printed organic electrochemical transistors (OECTs). NANOSCALE 2023; 15:5476-5485. [PMID: 36852643 DOI: 10.1039/d2nr06485e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The continuous spread of coronavirus disease 2019 (COVID-19) has highlighted the need for simple and reliable diagnostic technologies for point-of-care (POC) virus detection applications. Here, we report a COVID-19 diagnostic platform based on aerosol jet-printed antibody-functionalized organic electrochemical transistors (OECTs) for rapidly identifying severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) antigens. Selective sensing of SARS-CoV-2 spike S1 protein is achieved in phosphate-buffered saline (PBS) with a detectable range of 1 fg mL-1 to 1 μg mL-1. We used the sensors to detect the antigens in unprocessed patient nasopharyngeal swab samples in universal transport medium (UTM) and achieved an overall accuracy of 70%. In addition, these patient sample tests clearly demonstrate that our OECT threshold voltage shift is correlated with the sample SARS-CoV-2 viral load. Hence, we have demonstrated an accurate POC biosensor for detecting SARS-CoV-2 antigens, which holds great promise towards developing on-site and at-home rapid SARS-CoV-2 infection screening and COVID-19 prognosis.
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Affiliation(s)
- Jiaxin Fan
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
| | - Sheldon Parr
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
| | - Seongdae Kang
- Department of Chemical and Materials, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Manisha Gupta
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
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6
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Ohayon D, Druet V, Inal S. A guide for the characterization of organic electrochemical transistors and channel materials. Chem Soc Rev 2023; 52:1001-1023. [PMID: 36637165 DOI: 10.1039/d2cs00920j] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The organic electrochemical transistor (OECT) is one of the most versatile devices within the bioelectronics toolbox, with its compatibility with aqueous media and the ability to transduce and amplify ionic and biological signals into an electronic output. The OECT operation relies on the mixed (ionic and electronic charge) conduction properties of the material in its channel. With the increased popularity of OECTs in bioelectronics applications and to benchmark mixed conduction properties of channel materials, the characterization methods have broadened somewhat heterogeneously. We intend this review to be a guide for the characterization methods of the OECT and the channel materials used. Our review is composed of two main sections. First, we review techniques to fabricate the OECT, introduce different form factors and configurations, and describe the device operation principle. We then discuss the OECT performance figures of merit and detail the experimental procedures to obtain these characteristics. In the second section, we shed light on the characterization of mixed transport properties of channel materials and describe how to assess films' interactions with aqueous electrolytes. In particular, we introduce experimental methods to monitor ion motion and diffusion, charge carrier mobility, and water uptake in the films. We also discuss a few theoretical models describing ion-polymer interactions. We hope that the guidelines we bring together in this review will help researchers perform a more comprehensive and consistent comparison of new materials and device designs, and they will be used to identify advances and opportunities to improve the device performance, progressing the field of organic bioelectronics.
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Affiliation(s)
- David Ohayon
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division, Organic Bioelectronics Laboratory, Thuwal 23955-6900, Saudi Arabia.
| | - Victor Druet
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division, Organic Bioelectronics Laboratory, Thuwal 23955-6900, Saudi Arabia.
| | - Sahika Inal
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division, Organic Bioelectronics Laboratory, Thuwal 23955-6900, Saudi Arabia.
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7
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Vertical organic electrochemical transistors for complementary circuits. Nature 2023; 613:496-502. [PMID: 36653571 PMCID: PMC9849123 DOI: 10.1038/s41586-022-05592-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/24/2022] [Indexed: 01/19/2023]
Abstract
Organic electrochemical transistors (OECTs) and OECT-based circuitry offer great potential in bioelectronics, wearable electronics and artificial neuromorphic electronics because of their exceptionally low driving voltages (<1 V), low power consumption (<1 µW), high transconductances (>10 mS) and biocompatibility1-5. However, the successful realization of critical complementary logic OECTs is currently limited by temporal and/or operational instability, slow redox processes and/or switching, incompatibility with high-density monolithic integration and inferior n-type OECT performance6-8. Here we demonstrate p- and n-type vertical OECTs with balanced and ultra-high performance by blending redox-active semiconducting polymers with a redox-inactive photocurable and/or photopatternable polymer to form an ion-permeable semiconducting channel, implemented in a simple, scalable vertical architecture that has a dense, impermeable top contact. Footprint current densities exceeding 1 kA cm-2 at less than ±0.7 V, transconductances of 0.2-0.4 S, short transient times of less than 1 ms and ultra-stable switching (>50,000 cycles) are achieved in, to our knowledge, the first vertically stacked complementary vertical OECT logic circuits. This architecture opens many possibilities for fundamental studies of organic semiconductor redox chemistry and physics in nanoscopically confined spaces, without macroscopic electrolyte contact, as well as wearable and implantable device applications.
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8
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Fenoy GE, Hasler R, Quartinello F, Marmisollé WA, Lorenz C, Azzaroni O, Bäuerle P, Knoll W. "Clickable" Organic Electrochemical Transistors. JACS AU 2022; 2:2778-2790. [PMID: 36590273 PMCID: PMC9795466 DOI: 10.1021/jacsau.2c00515] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
Interfacing the surface of an organic semiconductor with biological elements is a central quest when it comes to the development of efficient organic bioelectronic devices. Here, we present the first example of "clickable" organic electrochemical transistors (OECTs). The synthesis and characterization of an azide-derivatized EDOT monomer (azidomethyl-EDOT, EDOT-N3) are reported, as well as its deposition on Au-interdigitated electrodes through electropolymerization to yield PEDOT-N3-OECTs. The electropolymerization protocol allows for a straightforward and reliable tuning of the characteristics of the OECTs, yielding transistors with lower threshold voltages than PEDOT-based state-of-the-art devices and maximum transconductance voltage values close to 0 V, a key feature for the development of efficient organic bioelectronic devices. Subsequently, the azide moieties are employed to click alkyne-bearing molecules such as redox probes and biorecognition elements. The clicking of an alkyne-modified PEG4-biotin allows for the use of the avidin-biotin interactions to efficiently generate bioconstructs with proteins and enzymes. In addition, a dibenzocyclooctyne-modified thrombin-specific HD22 aptamer is clicked on the PEDOT-N3-OECTs, showing the application of the devices toward the development of organic transistors-based biosensors. Finally, the clicked OECTs preserve their electronic features after the different clicking procedures, demonstrating the stability and robustness of the fabricated transistors.
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Affiliation(s)
- Gonzalo E. Fenoy
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Roger Hasler
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
| | - Felice Quartinello
- Department
of Agrobiotechnology, IFA-Tulln, Institute
of Environmental Biotechnology, Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria
| | - Waldemar A. Marmisollé
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Christoph Lorenz
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Omar Azzaroni
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas,
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata − CONICET, 64 and 113, 1900 La Plata, Argentina
| | - Peter Bäuerle
- Institute
for Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Wolfgang Knoll
- AIT
Austrian Institute of Technology GmbH, Konrad-Lorenz Straße 24, 3430 Tulln an der Donau, Austria
- Department
of Scientific Coordination and Management, Danube Private University, 3500 Krems, Austria
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9
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Tan STM, Lee G, Denti I, LeCroy G, Rozylowicz K, Marks A, Griggs S, McCulloch I, Giovannitti A, Salleo A. Tuning Organic Electrochemical Transistor Threshold Voltage using Chemically Doped Polymer Gates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202359. [PMID: 35737653 DOI: 10.1002/adma.202202359] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Organic electrochemical transistors (OECTs) have shown promise as transducers and amplifiers of minute electronic potentials due to their large transconductances. Tuning the OECT threshold voltage is important to achieve low-powered devices with amplification properties within the desired operational voltage range. However, traditional design approaches have struggled to decouple channel and materials properties from threshold voltage, thereby compromising on several other OECT performance metrics, such as electrochemical stability, transconductance, and dynamic range. In this work, simple solution-processing methods are utilized to chemically dope polymer gate electrodes, thereby controlling their work function, which in turn tunes the operation voltage range of the OECTs without perturbing their channel properties. Chemical doping of initially air-sensitive polymer electrodes further improves their electrochemical stability in ambient conditions. Thus, OECTs that are simultaneously low-powered and electrochemically resistant to oxidative side reactions under ambient conditions are demonstrated. This approach shows that threshold voltage, which is once interwoven with other OECT properties, can in fact be an independent design parameter, expanding the design space of OECTs.
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Affiliation(s)
- Siew Ting Melissa Tan
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Gijun Lee
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Ilaria Denti
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Garrett LeCroy
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Kalee Rozylowicz
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Adam Marks
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Sophie Griggs
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Iain McCulloch
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK
| | - Alexander Giovannitti
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, California, CA, 94305, USA
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10
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Tan E, Kim J, Stewart K, Pitsalidis C, Kwon S, Siemons N, Kim J, Jiang Y, Frost JM, Pearce D, Tyrrell JE, Nelson J, Owens RM, Kim YH, Kim JS. The Role of Long-Alkyl-Group Spacers in Glycolated Copolymers for High-Performance Organic Electrochemical Transistors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202574. [PMID: 35474344 DOI: 10.1002/adma.202202574] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Semiconducting polymers with oligoethylene glycol (OEG) sidechains have attracted strong research interest for organic electrochemical transistor (OECT) applications. However, key molecular design rules for high-performance OECTs via efficient mixed electronic/ionic charge transport are still unclear. In this work, new glycolated copolymers (gDPP-TTT and gDPP-TTVTT) with diketopyrrolopyrrole (DPP) acceptor and thiophene (T) and vinylene (V) thiophene-based donor units are synthesized and characterized for accumulation mode OECTs, where a long-alkyl-group (C12 ) attached to the DPP unit acts as a spacer distancing the OEG groups from the polymer backbone. gDPP-TTVTT shows the highest OECT transconductance (61.9 S cm-1 ) and high operational stability, compared to gDPP-TTT and their alkylated counterparts. Surprisingly, gDPP-TTVTT also shows high electronic charge mobility in a field-effect transistor, suggesting efficient ion injection/diffusion without hindering its efficient electronic charge transport. The elongated donor unit (TTVTT) facilitates hole polaron formation to be more localized to the donor unit, leading to faster and easier polaron formation with less impact on polymer structure during OECT operation, as opposed to the TTT unit. This is supported by molecular dynamics simulation. These simultaneously high electronic and ionic charge-transport properties are achieved due to the long-alkyl-group spacer in amphipathic sidechains, providing an important molecular design rule for glycolated copolymers.
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Affiliation(s)
- Ellasia Tan
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Jingwan Kim
- Department of Chemistry and Research Institute of Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, Gyeongnam, 660-701, South Korea
| | - Katherine Stewart
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Charalampos Pitsalidis
- Department of Physics, Healthcare Engineering Innovation Center (HEIC), Khalifa University, Abu Dhabi, P. O. Box 127788, UAE
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, UK
| | - Sooncheol Kwon
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Nicholas Siemons
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Jehan Kim
- Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Yifei Jiang
- Department of Chemistry and Research Institute of Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, Gyeongnam, 660-701, South Korea
| | - Jarvist M Frost
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Drew Pearce
- Experimental Solid State Physics Group, Department of Physics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - James E Tyrrell
- Experimental Solid State Physics Group, Department of Physics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Jenny Nelson
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Roisin M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, UK
| | - Yun-Hi Kim
- Department of Chemistry and Research Institute of Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, Gyeongnam, 660-701, South Korea
| | - Ji-Seon Kim
- Department of Physics and the Centre for Processable Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
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11
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Granelli R, Alessandri I, Gkoupidenis P, Vassalini I, Kovács-Vajna ZM, Blom PWM, Torricelli F. High-Performance Bioelectronic Circuits Integrated on Biodegradable and Compostable Substrates with Fully Printed Mask-Less Organic Electrochemical Transistors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2108077. [PMID: 35642950 DOI: 10.1002/smll.202108077] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/31/2022] [Indexed: 06/15/2023]
Abstract
Organic electrochemical transistors (OECTs) rely on volumetric ion-modulation of the electronic current to provide low-voltage operation, large signal amplification, enhanced sensing capabilities, and seamless integration with biology. The majority of current OECT technologies require multistep photolithographic microfabrication methods on glass or plastic substrates, which do not provide an ideal path toward ultralow cost ubiquitous and sustainable electronics and bioelectronics. At the same time, the development of advanced bioelectronic circuits combining bio-detection, amplification, and local processing functionalities urgently demand for OECT technology platforms with a monolithic integration of high-performance iontronic circuits and sensors. Here, fully printed mask-less OECTs fabricated on thin-film biodegradable and compostable substrates are proposed. The dispensing and capillary printing methods are used for depositing both high- and low-viscosity OECT materials. Fully printed OECT unipolar inverter circuits with a gain normalized to the supply voltage as high as 136.6 V-1 , and current-driven sensors for ion detection and real-time monitoring with a sensitivity of up to 506 mV dec-1 , are integrated on biodegradable and compostable substrates. These universal building blocks with the top-performance ever reported demonstrate the effectiveness of the proposed approach and can open opportunities for next-generation high-performance sustainable bioelectronics.
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Affiliation(s)
- Roberto Granelli
- Department of Information Engineering, University of Brescia, via Branze 38, Brescia, 25123, Italy
| | - Ivano Alessandri
- Department of Information Engineering, University of Brescia, via Branze 38, Brescia, 25123, Italy
| | | | - Irene Vassalini
- Department of Information Engineering, University of Brescia, via Branze 38, Brescia, 25123, Italy
| | - Zsolt M Kovács-Vajna
- Department of Information Engineering, University of Brescia, via Branze 38, Brescia, 25123, Italy
| | - Paul W M Blom
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Fabrizio Torricelli
- Department of Information Engineering, University of Brescia, via Branze 38, Brescia, 25123, Italy
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12
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Nguyen-Dang T, Chae S, Chatsirisupachai J, Wakidi H, Promarak V, Visell Y, Nguyen TQ. Dual-Mode Organic Electrochemical Transistors Based on Self-Doped Conjugated Polyelectrolytes for Reconfigurable Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200274. [PMID: 35362210 DOI: 10.1002/adma.202200274] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Reconfigurable organic logic devices are promising candidates for next generations of efficient computing systems and adaptive electronics. Ideally, such devices would be of simple structure and design, be power efficient, and compatible with high-throughput microfabrication techniques. This work reports an organic reconfigurable logic gate based on novel dual-mode organic electrochemical transistors (OECTs), which employ a self-doped conjugated polyelectrolyte as the active material, which then allows the transistors to operate in both depletion mode and enhancement mode. Furthermore, mode switching is accomplished by simply altering the polarity of the applied gate and drain voltages, which can be done on the fly. In contrast, achieving similar mode-switching functionality with other organic transistors typically requires complex molecular design or multi-device engineering. It in shown that dual-mode functionality is enabled by the concurrent existence of anion doping and cation dedoping of the films. A device physics model that accurately describes the behavior of these transistors is developed. Finally, the utility of these dual-mode transistors for implementing reconfigurable logic by fabricating a logic gate that may be switched between logic gates AND to NOR, and OR to NAND on the fly is demonstrated.
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Affiliation(s)
- Tung Nguyen-Dang
- Center for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Sangmin Chae
- Center for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Jirat Chatsirisupachai
- Center for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, 21210, Thailand
| | - Hiba Wakidi
- Center for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Vinich Promarak
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, 21210, Thailand
| | - Yon Visell
- RE Touch Lab, California NanoSystems Institute, Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Thuc-Quyen Nguyen
- Center for Polymers and Organic Solids, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
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13
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Wearable Near-Field Communication Sensors for Healthcare: Materials, Fabrication and Application. MICROMACHINES 2022; 13:mi13050784. [PMID: 35630251 PMCID: PMC9146494 DOI: 10.3390/mi13050784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 01/27/2023]
Abstract
The wearable device industry is on the rise, with technology applications ranging from wireless communication technologies to the Internet of Things. However, most of the wearable sensors currently on the market are expensive, rigid and bulky, leading to poor data accuracy and uncomfortable wearing experiences. Near-field communication sensors are low-cost, easy-to-manufacture wireless communication technologies that are widely used in many fields, especially in the field of wearable electronic devices. The integration of wireless communication devices and sensors exhibits tremendous potential for these wearable applications by endowing sensors with new features of wireless signal transferring and conferring radio frequency identification or near-field communication devices with a sensing function. Likewise, the development of new materials and intensive research promotes the next generation of ultra-light and soft wearable devices for healthcare. This review begins with an introduction to the different components of near-field communication, with particular emphasis on the antenna design part of near-field communication. We summarize recent advances in different wearable areas of near-field communication sensors, including structural design, material selection, and the state of the art of scenario-based development. The challenges and opportunities relating to wearable near-field communication sensors for healthcare are also discussed.
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14
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Flexible complementary circuits operating at sub-0.5 V via hybrid organic-inorganic electrolyte-gated transistors. Proc Natl Acad Sci U S A 2021; 118:2111790118. [PMID: 34716274 DOI: 10.1073/pnas.2111790118] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/29/2021] [Indexed: 11/18/2022] Open
Abstract
Electrolyte-gated transistors (EGTs) hold great promise for next-generation printed logic circuitry, biocompatible integrated sensors, and neuromorphic devices. However, EGT-based complementary circuits with high voltage gain and ultralow driving voltage (<0.5 V) are currently unrealized, because achieving balanced electrical output for both the p- and n-type EGT components has not been possible with current materials. Here we report high-performance EGT complementary circuits containing p-type organic electrochemical transistors (OECTs) fabricated with an ion-permeable organic semiconducting polymer (DPP-g2T) and an n-type electrical double-layer transistor (EDLT) fabricated with an ion-impermeable inorganic indium-gallium-zinc oxide (IGZO) semiconductor. Adjusting the IGZO composition enables tunable EDLT output which, for In:Ga:Zn = 10:1:1 at%, balances that of the DPP-g2T OECT. The resulting hybrid electrolyte-gated inverter (HCIN) achieves ultrahigh voltage gains (>110) under a supply voltage of only 0.7 V. Furthermore, NAND and NOR logic circuits on both rigid and flexible substrates are realized, enabling not only excellent logic response with driving voltages as low as 0.2 V but also impressive mechanical flexibility down to 1-mm bending radii. Finally, the HCIN was applied in electrooculographic (EOG) signal monitoring for recording eye movement, which is critical for the development of wearable medical sensors and also interfaces for human-computer interaction; the high voltage amplification of the present HCIN enables EOG signal amplification and monitoring in which a small ∼1.5 mV signal is amplified to ∼30 mV.
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15
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Rashid RB, Ji X, Rivnay J. Organic electrochemical transistors in bioelectronic circuits. Biosens Bioelectron 2021; 190:113461. [PMID: 34197997 DOI: 10.1016/j.bios.2021.113461] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 11/30/2022]
Abstract
The organic electrochemical transistor (OECT) represents a versatile and impactful electronic building block in the areas of printed electronics, bioelectronics, and neuromorphic computing. Significant efforts in OECTs have focused on device physics, new active material design and synthesis, and on preliminary implementation of individual transistors as proof-of-concept components for sensing and computation. However, as most of the current studies are based on single devices, the integration of OECTs into circuits or high-level systems has lagged. In this review, we focus on recent efforts to incorporate individual OECTs into digital, analog, and neuromorphic circuits, and lay out important considerations relevant for (hybrid) systems integration. We summarize the operation principles and the functions of OECT-based circuits and discuss the approaches for wireless power and data transmission for practicality in biological and bio-inspired applications. Finally, we comment on the future directions and challenges facing OECT circuits from both a fundamental and applied perspective.
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Affiliation(s)
- Reem B Rashid
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Xudong Ji
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Jonathan Rivnay
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA.
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16
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Yang Y, Wei X, Zhang N, Zheng J, Chen X, Wen Q, Luo X, Lee CY, Liu X, Zhang X, Chen J, Tao C, Zhang W, Fan X. A non-printed integrated-circuit textile for wireless theranostics. Nat Commun 2021; 12:4876. [PMID: 34385436 PMCID: PMC8361012 DOI: 10.1038/s41467-021-25075-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 07/22/2021] [Indexed: 01/13/2023] Open
Abstract
While the printed circuit board (PCB) has been widely considered as the building block of integrated electronics, the world is switching to pursue new ways of merging integrated electronic circuits with textiles to create flexible and wearable devices. Herein, as an alternative for PCB, we described a non-printed integrated-circuit textile (NIT) for biomedical and theranostic application via a weaving method. All the devices are built as fibers or interlaced nodes and woven into a deformable textile integrated circuit. Built on an electrochemical gating principle, the fiber-woven-type transistors exhibit superior bending or stretching robustness, and were woven as a textile logical computing module to distinguish different emergencies. A fiber-type sweat sensor was woven with strain and light sensors fibers for simultaneously monitoring body health and the environment. With a photo-rechargeable energy textile based on a detailed power consumption analysis, the woven circuit textile is completely self-powered and capable of both wireless biomedical monitoring and early warning. The NIT could be used as a 24/7 private AI "nurse" for routine healthcare, diabetes monitoring, or emergencies such as hypoglycemia, metabolic alkalosis, and even COVID-19 patient care, a potential future on-body AI hardware and possibly a forerunner to fabric-like computers.
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Affiliation(s)
- Yuxin Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Industrial Technology Research Institute of Chongqing University, Chongqing, China
| | - Xiaofei Wei
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Nannan Zhang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
| | - Juanjuan Zheng
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Xing Chen
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Qian Wen
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
- Industrial Technology Research Institute of Chongqing University, Chongqing, China
| | - Xinxin Luo
- Industrial Technology Research Institute of Chongqing University, Chongqing, China
| | - Chong-Yew Lee
- School of Pharmaceutical Sciences, University Sains Malaysia, Penang, Malaysia
| | - Xiaohong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
| | - Xingcai Zhang
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
- School of Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Changyuan Tao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Wei Zhang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China.
| | - Xing Fan
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- Industrial Technology Research Institute of Chongqing University, Chongqing, China.
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17
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Ferro LMM, Merces L, de Camargo DHS, Bof Bufon CC. Ultrahigh-Gain Organic Electrochemical Transistor Chemosensors Based on Self-Curled Nanomembranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101518. [PMID: 34061409 DOI: 10.1002/adma.202101518] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Organic electrochemical transistors (OECTs) are technologically relevant devices presenting high susceptibility to physical stimulus, chemical functionalization, and shape changes-jointly to versatility and low production costs. The OECT capability of liquid-gating addresses both electrochemical sensing and signal amplification within a single integrated device unit. However, given the organic semiconductor time-consuming doping process and their usual low field-effect mobility, OECTs are frequently considered low-end category devices. Toward high-performance OECTs, microtubular electrochemical devices based on strain-engineering are presented here by taking advantage of the exclusive shape features of self-curled nanomembranes. Such novel OECTs outperform the state-of-the-art organic liquid-gated transistors, reaching lower operating voltage, improved ion doping, and a signal amplification with a >104 intrinsic gain. The multipurpose OECT concept is validated with different electrolytes and distinct nanometer-thick molecular films, namely, phthalocyanine and thiophene derivatives. The OECTs are also applied as transducers to detect a biomarker related to neurological diseases, the neurotransmitter dopamine. The self-curled OECTs update the premises of electrochemical energy conversion in liquid-gated transistors, yielding a substantial performance improvement and new chemical sensing capabilities within picoliter sampling volumes.
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Affiliation(s)
- Letícia M M Ferro
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro 10000, Polo II de Alta Tecnologia, Campinas, 13083-100, Brazil
- Institute of Chemistry (IQ), University of Campinas (UNICAMP), Cidade Universitária "Zeferino Vaz", Campinas, 13083-970, Brazil
| | - Leandro Merces
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro 10000, Polo II de Alta Tecnologia, Campinas, 13083-100, Brazil
| | - Davi H S de Camargo
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro 10000, Polo II de Alta Tecnologia, Campinas, 13083-100, Brazil
| | - Carlos C Bof Bufon
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro 10000, Polo II de Alta Tecnologia, Campinas, 13083-100, Brazil
- Institute of Chemistry (IQ), University of Campinas (UNICAMP), Cidade Universitária "Zeferino Vaz", Campinas, 13083-970, Brazil
- Postgraduate Program in Materials Science and Technology (POSMAT), São Paulo State University (UNESP), Bauru, São Paulo, 17033-360, Brazil
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18
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Keene ST, van der Pol TPA, Zakhidov D, Weijtens CHL, Janssen RAJ, Salleo A, van de Burgt Y. Enhancement-Mode PEDOT:PSS Organic Electrochemical Transistors Using Molecular De-Doping. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000270. [PMID: 32202010 DOI: 10.1002/adma.202000270] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/28/2020] [Accepted: 03/03/2020] [Indexed: 05/23/2023]
Abstract
Organic electrochemical transistors (OECTs) show great promise for flexible, low-cost, and low-voltage sensors for aqueous solutions. The majority of OECT devices are made using the polymer blend poly(ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), in which PEDOT is intrinsically doped due to inclusion of PSS. Because of this intrinsic doping, PEDOT:PSS OECTs generally operate in depletion mode, which results in a higher power consumption and limits stability. Here, a straightforward method to de-dope PEDOT:PSS using commercially available amine-based molecular de-dopants to achieve stable enhancement-mode OECTs is presented. The enhancement-mode OECTs show mobilities near that of pristine PEDOT:PSS (≈2 cm2 V-1 s-1 ) with stable operation over 1000 on/off cycles. The electron and proton exchange among PEDOT, PSS, and the molecular de-dopants are characterized to reveal the underlying chemical mechanism of the threshold voltage shift to negative voltages. Finally, the effect of the de-doping on the microstructure of the spin-cast PEDOT:PSS films is investigated.
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Affiliation(s)
- Scott T Keene
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Tom P A van der Pol
- Molecular Materials and Nanosystems and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612AJ, Netherlands
| | - Dante Zakhidov
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Christ H L Weijtens
- Molecular Materials and Nanosystems and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612AJ, Netherlands
| | - René A J Janssen
- Molecular Materials and Nanosystems and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612AJ, Netherlands
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Yoeri van de Burgt
- Microsystems and Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612AJ, Netherlands
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19
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Leydecker T, Wang ZM, Torricelli F, Orgiu E. Organic-based inverters: basic concepts, materials, novel architectures and applications. Chem Soc Rev 2020; 49:7627-7670. [DOI: 10.1039/d0cs00106f] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The review article covers the materials and techniques employed to fabricate organic-based inverter circuits and highlights their novel architectures, ground-breaking performances and potential applications.
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Affiliation(s)
- Tim Leydecker
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
- Institut National de la Recherche Scientifique (INRS)
| | - Zhiming M. Wang
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Fabrizio Torricelli
- Department of Information Engineering
- University of Brescia
- 25123 Brescia
- Italy
| | - Emanuele Orgiu
- Institut National de la Recherche Scientifique (INRS)
- EMT Center
- Varennes J3X 1S2
- Canada
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20
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Ion buffering and interface charge enable high performance electronics with organic electrochemical transistors. Nat Commun 2019; 10:3044. [PMID: 31292452 PMCID: PMC6620344 DOI: 10.1038/s41467-019-11073-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 06/17/2019] [Indexed: 01/23/2023] Open
Abstract
Organic electrochemical transistors rely on ionic-electronic volumetric interaction to provide a seamless interface between biology and electronics with outstanding signal amplification. Despite their huge potential, further progress is limited owing to the lack of understanding of the device fundamentals. Here, we investigate organic electrochemical transistors in a wide range of experimental conditions by combining electrical analyses and device modeling. We show that the measurements can be quantitatively explained by nanoscale ionic-electronic charge interaction, giving rise to ion buffering and interface charge compensation. The investigation systematically explains and unifies a wide range of experiments, providing the rationale for the development of high-performance electronics. Unipolar inverters — universal building blocks for electronics — with gain larger than 100 are demonstrated. This is the highest gain ever reported, enabling the design of devices and circuits with enhanced performance and opening opportunities for the next-generation integrated bioelectronics and neuromorphic computing. The rationale design of optimized organic electrochemical transistors (OECTs) for next-generation bioelectronics requires further exploration of the underlying device physics. Here, the authors report the role of ionic-electronic charge interactions on OECTs and high-performance unipolar inverters.
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21
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Venkatraman V, Friedlein JT, Giovannitti A, Maria IP, McCulloch I, McLeod RR, Rivnay J. Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800453. [PMID: 30128254 PMCID: PMC6097142 DOI: 10.1002/advs.201800453] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/22/2018] [Indexed: 05/26/2023]
Abstract
With a host of new materials being investigated as active layers in organic electrochemical transistors (OECTs), several advantageous characteristics can be utilized to improve transduction and circuit level performance for biosensing applications. Here, the subthreshold region of operation of one recently reported high performing OECT material, poly(2-(3,3'-bis(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-[2,2'-bithiophen]-5-yl)thieno[3,2-b]thiophene), p(g2T-TT) is investigated. The material's high subthreshold slope (SS) is exploited for high voltage gain and low power consumption. An ≈5× improvement in voltage gain (AV) for devices engineered for equal output current and 370× lower power consumption in the subthreshold region, in comparison to operation in the higher transconductance (gm), superthreshold region usually reported in the literature, are reported. Electrophysiological sensing is demonstrated using the subthreshold regime of p(g2T-TT) devices and it is suggested that operation in this regime enables low power, enhanced sensing for a broad range of bioelectronic applications. Finally, the accessibility of the subthreshold regime of p(g2T-TT) is evaluated in comparison with the prototypical poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and the role of material design in achieving favorable properties for subthreshold operation is discussed.
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Affiliation(s)
- Vishak Venkatraman
- Department of Biomedical EngineeringNorthwestern University2145 Sheridan RoadEvanstonIL60208USA
- Simpson Querrey Institute for BioNanotechnologyNorthwestern UniversityChicagoIL60611USA
| | - Jacob T. Friedlein
- Department of ElectricalComputer, and Energy EngineeringUniversity of ColoradoBoulderCO80309‐0425USA
| | | | | | - Iain McCulloch
- Department of ChemistryImperial College LondonLondonSW7 2AZUK
- Physical Sciences and Engineering DivisionKAUST Solar Center (KSC)King Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
| | - Robert R. McLeod
- Department of ElectricalComputer, and Energy EngineeringUniversity of ColoradoBoulderCO80309‐0425USA
| | - Jonathan Rivnay
- Department of Biomedical EngineeringNorthwestern University2145 Sheridan RoadEvanstonIL60208USA
- Simpson Querrey Institute for BioNanotechnologyNorthwestern UniversityChicagoIL60611USA
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