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Title: Structural control of mixed ionic and electronic transport in conducting polymers

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms11287· OSTI ID:1253733
ORCiD logo [1];  [1];  [2];  [3];  [1];  [1];  [4];  [5];  [1]
  1. Ecole Nationale Superieure des Mines, CMP-EMSE, MOC, Gardanne (France)
  2. National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States); Washington State Univ., Pullman, WA (United States)
  3. Univ. de Valencia, Paterna (Spain)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States)

Poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate), PEDOT:PSS, has been utilized for over two decades as a stable, solution-processable hole conductor. While its hole transport properties have been the subject of intense investigation, recent work has turned to PEDOT:PSS as a mixed ionic/electronic conductor in applications including bioelectronics, energy storage and management, and soft robotics. Conducting polymers can efficiently transport both holes and ions when sufficiently hydrated, however, little is known about the role of morphology on mixed conduction. Here, we show that bulk ionic and electronic mobilities are simultaneously affected by processing-induced changes in nano- and meso-scale structure in PEDOT:PSS films. We quantify domain composition, and find that domain purification on addition of dispersion co-solvents limits ion mobility, even while electronic conductivity improves. We show that an optimal morphology allows for the balanced ionic and electronic transport that is critical for prototypical mixed conductor devices. As a result, these findings may pave the way for the rational design of polymeric materials and processing routes to enhance devices reliant on mixed conduction.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1253733
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 552 works
Citation information provided by
Web of Science

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Scaling Effects on the Electrochemical Stimulation Performance of Au, Pt, and PEDOT:PSS Electrocorticography Arrays journal August 2017
Electronic and Ionic Materials for Neurointerfaces journal November 2017
Robust High Thermoelectric Harvesting Under a Self-Humidifying Bilayer of Metal Organic Framework and Hydrogel Layer journal December 2018
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Tuning Channel Architecture of Interdigitated Organic Electrochemical Transistors for Recording the Action Potentials of Electrogenic Cells journal May 2019
Controlling Electrostatic Interaction in PEDOT:PSS to Overcome Thermoelectric Tradeoff Relation journal September 2019
Balancing Ionic and Electronic Conduction for High‐Performance Organic Electrochemical Transistors journal January 2020
Soft and Ion‐Conducting Materials in Bioelectronics: From Conducting Polymers to Hydrogels journal January 2020
Molecular-Level Hybridization of Nafion with Quantum Dots for Highly Enhanced Proton Conduction journal March 2018
Recent Advances in Materials, Devices, and Systems for Neural Interfaces journal May 2018
Active Materials for Organic Electrochemical Transistors journal July 2018
Materials and Structures toward Soft Electronics journal August 2018
Carbon-Based Photocathode Materials for Solar Hydrogen Production journal September 2018
Balancing Charge Storage and Mobility in an Oligo(Ether) Functionalized Dioxythiophene Copolymer for Organic‐ and Aqueous‐ Based Electrochemical Devices and Transistors journal August 2018
Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future? journal January 2020
Deposition Dependent Ion Transport in Doped Conjugated Polymer Films: Insights for Creating High-Performance Electrochemical Devices journal October 2017
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A Multiparameter Pressure–Temperature–Humidity Sensor Based on Mixed Ionic–Electronic Cellulose Aerogels journal February 2019
Impact of Eumelanin-PEDOT Blending: Increased PEDOT Crystalline Order and Packing-Conductivity Relationship in Ternary PEDOT:PSS:Eumelanin Thin Films journal January 2019
Effect of DMSO Solvent Treatments on the Performance of PEDOT:PSS Based Organic Electrochemical Transistors journal February 2019
The Role of Ordering on the Thermoelectric Properties of Blends of Regioregular and Regiorandom Poly(3‐hexylthiophene) journal April 2019
Solvent Engineering for High‐Performance n‐Type Organic Electrochemical Transistors journal June 2019
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Transparent Wood Smart Windows: Polymer Electrochromic Devices Based on Poly(3,4-Ethylenedioxythiophene):Poly(Styrene Sulfonate) Electrodes journal February 2018
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