Structural control of mixed ionic and electronic transport in conducting polymers

Rivnay, Jonathan; Inal, Sahika; Collins, Brian A.; Sessolo, Michele; Stavrinidou, Eleni; Strakosas, Xenofon; Tassone, Christopher J.; DeLongchamp, Dean M.; Malliaras, George G.

doi:10.1038/ncomms11287

Cited by 738 publications

(892 citation statements)

References 53 publications

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“…For example, PEDOT:PSS polymer blend contains two polymers: PEDOT, which can be electrically conductive, and PSS, which conducts only ions. It has been shown that PEDOT:PSS is a two phase system consisting of PEDOT-rich and PSS-rich grains [44]. The PSS-rich grains are amorphous while PEDOT-rich grains form the crystalline lamellae regions with typical thickness on the order of 10-30 nm.…”

Section: Charge Transport Models For Conductive Polymersmentioning

confidence: 99%

Ionic and electronic transport in electrochemical and polymer based systems

Volkov

2017

Linköping Studies in Science and Technology. Dissertations

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Description of the cover image:An ion exchange membrane Ionic and electronic transport in electrochemical and polymer based systemsCopyright © 2017 Anton Volkov (unless otherwise noted) Division of Physics and Electronics Department of Science and TechnologyLinköping University SE-601 74 Norrköping, Sweden Norrköping, March 2017 ISBN: 978-91-7685-548-5 ISSN 0345-7524 Printed in Sweden by LiU-Tryck, Linköping, 2017 Electronic publication: www.ep.liu.seTo my parents, Alla and Vyacheslav. AbstractElectrochemical systems, which rely on coupled phenomena of the chemical change and electricity, have been utilized for development an interface between biological systems and conventional electronics. The development and detailed understanding of the operation mechanism of such interfaces have a great importance to many fields within life science and conventional electronics. Conducting polymer materials are extensively used as a building block in various applications due to their ability to transduce chemical signal to electrical one and vice versa. The mechanism of the coupling between the mass and charge transfer in electrochemical systems, and particularly in conductive polymer based system, is highly complex and depends on various physical and chemical properties of the materials composing the system of interest.The aims of this thesis have been to study electrochemical systems including conductive polymer based systems and provide knowledge for future development of the devices, which can operate with both chemical and electrical signals. Within the thesis, we studied the operation mechanism of ion bipolar junction transistor (IBJT), which have been previously utilized to modulate delivery of charged molecules. We analysed the different operation modes of IBJT and transition between them on the basis of detailed concentration and potential profiles provided by the model.We also performed investigation of capacitive charging in conductive PEDOT:PSS polymer electrode. We demonstrated that capacitive charging of PEDOT:PSS electrode at the cyclic voltammetry, can be understood within a modified Nernst-Planck-Poisson formalism for two phase system in terms of the coupled ion-electron diffusion and migration without invoking the assumption of any redox reactions.Further, we studied electronic structure and optical properties of a self-doped p-type conducting polymer, which can polymerize itself along the stem of the plants. We performed ab initio calculations for this system in undoped, polaron and bipolaron electronic states.Comparison with experimental data confirmed the formation of undoped or bipolaron states in polymer film depending on applied biases.Finally, we performed simulation of the reduction-oxidation reaction at microband array electrodes. We showed that faradaic current density at microband array electrodes increases due to non-linear mass transport on the microscale compared to the corresponding macroscale systems. The studied microband array electrode was used for developing a laccase-based micro...

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Section: Charge Transport Models For Conductive Polymersmentioning

confidence: 99%

Ionic and electronic transport in electrochemical and polymer based systems

Volkov

2017

Linköping Studies in Science and Technology. Dissertations

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“…During ES, charges on the metallic collection plate move instantaneously given the time scales associated with fiber deposition. Motion associated with charge in the polymer (much slower than motion of charge in metals) is dictated by ionic mobility of the polymer [256]. Resultant fiber diameter depends largely on the flow rate, applied voltage, and fluid surface tension of the melted polymer [257,258].…”

Section: Es Fabrication Of Organic Micro-and Nano-fiber Devicesmentioning

confidence: 99%

Electrospinning for nano- to mesoscale photonic structures

et al. 2016

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Abstract:The fabrication of photonic and electronic structures and devices has directed the manufacturing industry for the last 50 years. Currently, the majority of small-scale photonic devices are created by traditional microfabrication techniques that create features by processes such as lithography and electron or ion beam direct writing. Microfabrication techniques are often expensive and slow. In contrast, the use of electrospinning (ES) in the fabrication of microand nano-scale devices for the manipulation of photons and electrons provides a relatively simple and economic viable alternative. ES involves the delivery of a polymer solution to a capillary held at a high voltage relative to the fiber deposition surface. Electrostatic force developed between the collection plate and the polymer promotes fiber deposition onto the collection plate. Issues with ES fabrication exist primarily due to an instability region that exists between the capillary and collection plate and is characterized by chaotic motion of the depositing polymer fiber. Material limitations to ES also exist; not all polymers of interest are amenable to the ES process due to process dependencies on molecular weight and chain entanglement or incompatibility with other polymers and overall process compatibility. Passive and active electronic and photonic fibers fabricated through the ES have great potential for use in light generation and collection in optical and electronic structures/ devices. ES produces fiber devices that can be combined with inorganic, metallic, biological, or organic materials for novel device design. Synergistic material selection and postprocessing techniques are also utilized for broad-ranging applications of organic nanofibers that span from biological to electronic, photovoltaic, or photonic. As the ability to electrospin optically and/or electronically active materials in a controlled manner continues to improve, the complexity and diversity of devices fabricated from this process can be expected to grow rapidly and provide an alternative to traditional resource-intensive fabrication techniques.

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“…Without modification, PEDOT:PSS films exhibit a relatively low conductivity of 0.1–1 S cm −1 because of the large excess of inactive PSS − inhibiting charge transport between PEDOT + crystallites. The conductivity of PEDOT:PSS has been enhanced by orders of magnitude to well over 1000 S cm −1 through the incorporation of co‐solvents or by post treatments with strong acids 42, 43, 44, 45. This enhancement is attributed to a higher degree of ordering and increased domain purity of the PEDOT + crystallites combined with a partial removal of excess PSS − .…”

Section: Introductionmentioning

confidence: 99%

Transparent Wood Smart Windows: Polymer Electrochromic Devices Based on Poly(3,4‐Ethylenedioxythiophene):Poly(Styrene Sulfonate) Electrodes

et al. 2018

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Transparent wood composites, with their high strength and toughness, thermal insulation, and excellent transmissivity, offer a route to replace glass for diffusely transmitting windows. Here, conjugated‐polymer‐based electrochromic devices (ECDs) that switch on‐demand are demonstrated using transparent wood coated with poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as a transparent conducting electrode. These ECDs exhibit a vibrant magenta‐to‐clear color change that results from a remarkably colorless bleached state. Furthermore, they require low energy and power inputs of 3 mWh m−2 at 2 W m−2 to switch due to a high coloration efficiency (590 cm2 C−1) and low driving voltage (0.8 V). Each device component is processed with high‐throughput methods, which highlights the opportunity to apply this approach to fabricate mechanically robust, energy‐efficient smart windows on a large scale.

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Structural control of mixed ionic and electronic transport in conducting polymers

Cited by 738 publications

References 53 publications

Ionic and electronic transport in electrochemical and polymer based systems

Ionic and electronic transport in electrochemical and polymer based systems

Electrospinning for nano- to mesoscale photonic structures

Transparent Wood Smart Windows: Polymer Electrochromic Devices Based on Poly(3,4‐Ethylenedioxythiophene):Poly(Styrene Sulfonate) Electrodes

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