Ionic and Electronic Mobility in Organic Mixed Conductors
5 affiliations
- 1Department of Materials Science and Engineering
- 2Stanford University
- 3Bio-inspired MEMS and Biomedical Devices, Engineering and Technology Institute Groningen (ENTEG)
- 4University of Modena and Reggio Emilia
- 5University of Groningen
Abstract
Charge transport in organic mixed ionic and electronic conductors (OMIECs) is the most basic phenomenon that governs device performance. Due to the material complexity, decoupling ionic from electronic transport is challenging: both measurements and models remain unsatisfactory. Here, we demonstrate that transport of both species in specially designed structures can be described using a unified drift-diffusion model and equivalent circuit. Under these transport-limited conditions, we leverage distinct diffusion features emerging in electrochemical impedance spectra to extract both cation and hole mobilities in PEDOT:PSS on a microfabricated chip. Ultimately, this framework provides a fundamental theoretical model and a robust, single-chip platform to decouple and quantify the transport properties of both ionic and electronic species. This platform offers an immediate opportunity to study structure-property relationships in the context of ionic and electronic transport, guiding the rational synthetic design and predictive discovery of next-generation OMIEC materials and devices.
Related
- Myelin Sheath-Inspired Fluorocarbon Hydrophobic Bridges for Stable n-Type Organic Mixed Ionic-Electronic Conductors.
- Beyond Swelling: Electrochemical Doping Tunes the Balance between Ion Compensation and Exchange in a Hydrated Organic Mixed Ionic–Electronic Conductor
- Pore-Engineering Enhances Low-Temperature Mixed Ionic-Electronic Conduction in Two-Dimensional Polymer Lithium Ion-Battery Electrodes
- Mixed Ionic–Electronic Memory in a Conjugated Polymer Composite for Retrospective Optical Event Reconstruction
- Combining physical models with dynamically acquired experimental information for the optimization of multicomponent NASICON fast ionic conductors in a self-driving laboratory
BibTeX
@misc{mele2026ionic,
title = {{Ionic and Electronic Mobility in Organic Mixed Conductors}},
author = {Leandro Julian Mele and Gerwin Dijk and Jeremy Treiber and Alberto Salleo},
howpublished = {ChemRxiv},
year = {2026},
month = sep,
doi = {10.26434/chemrxiv.15008180/v1},
url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008180/v1},
note = {CC BY-NC-ND},
}
RIS
TY - UNPB
TI - Ionic and Electronic Mobility in Organic Mixed Conductors
AU - Leandro Julian Mele
AU - Gerwin Dijk
AU - Jeremy Treiber
AU - Alberto Salleo
PY - 2026
DA - 2026/09/01
PB - ChemRxiv
DO - 10.26434/chemrxiv.15008180/v1
UR - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008180/v1
AB - Charge transport in organic mixed ionic and electronic conductors (OMIECs) is the most basic phenomenon that governs device performance. Due to the material complexity, decoupling ionic from electronic transport is challenging: both measurements and models remain unsatisfactory. Here, we demonstrate that transport of both species in specially designed structures can be described using a unified drift-diffusion model and equivalent circuit. Under these transport-limited conditions, we leverage distinct diffusion features emerging in electrochemical impedance spectra to extract both cation and hole mobilities in PEDOT:PSS on a microfabricated chip. Ultimately, this framework provides a fundamental theoretical model and a robust, single-chip platform to decouple and quantify the transport properties of both ionic and electronic species. This platform offers an immediate opportunity to study structure-property relationships in the context of ionic and electronic transport, guiding the rational synthetic design and predictive discovery of next-generation OMIEC materials and devices.
ER -