Title: A Semiconducting Two‐Dimensional Polymer as an Organic Electrochemical Transistor Active Layer

Abstract

Abstract Organic electrochemical transistors (OECTs) are devices with broad potential in bioelectronic sensing, circuits, and neuromorphic hardware. Their unique properties arise from the use of organic mixed ionic/electronic conductors (OMIECs) as the active channel. Typical OMIECs are linear polymers, where defined and controlled microstructure/morphology, and reliable characterization of transport and charging can be elusive. Semiconducting two‐dimensional polymers (2DPs) present a new avenue in OMIEC materials development, enabling electronic transport along with precise control of well‐defined channels ideal for ion transport/intercalation. To this end, a recently reported 2DP, TIIP, is synthesized and patterned at 10 µm resolution as the channel of a transistor. The TIIP films demonstrate textured microstructure and show semiconducting properties with accessible oxidation states. Operating in an aqueous electrolyte, the 2DP‐OECT exhibits a device‐scale hole mobility of 0.05 cm ² V ^–1 s ^–1 and a µ C * figure of merit of 1.75 F cm ^–1 V ^–1 s ^–1 . 2DP OMIECs thus offer new synthetic degrees of freedom to control OECT performance and may enable additional opportunities such as ion selectivity or improved stability through reduced morphological modulation during device operation.

Authors:

Rashid, Reem B. ^[1]; Evans, Austin M.  ^[2];

• Search DOE PAGES for author "Evans, Austin M."
• Search DOE PAGES for ORCID "0000-0002-3597-2454"

Hall, Lyndon A. ^[3]; Dasari, Raghunath R. ^[4]; Roesner, Emily K. ^[2]; Marder, Seth R. ^[5]; D'Allesandro, Deanna M. ^[3]; Dichtel, William R.  ^[2];

• Search DOE PAGES for author "Dichtel, William R."
• Search DOE PAGES for ORCID "0000-0002-3635-6119"

Rivnay, Jonathan  ^[1]

• Search DOE PAGES for author "Rivnay, Jonathan"
• Search DOE PAGES for ORCID "0000-0002-0602-6485"

---

+ Show Author Affiliations

1. Dept. of Biomedical Engineering Northwestern University Evanston IL 60208 USA, Simpson Querrey Institute Northwestern University Chicago IL 60611 USA
2. Department of Chemistry Northwestern University Evanston IL 60208 USA
3. School of Chemistry The University of Sydney Sydney NSW 2006 Australia
4. School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
5. School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA, University of Colorado Boulder Renewable and Sustainable Energy Institute Boulder CO 80303 USA, National Renewable Energy Laboratory Chemistry and Nanoscience Center Golden CO 80401 USA, University of Colorado Boulder Department of Chemical and Biological Engineering Boulder CO 80303 USA, University of Colorado Boulder Department of Chemistry Boulder CO 80303 USA

Publication Date:

Thu Apr 21 00:00:00 EDT 2022

Research Org.:

National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:

USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:

1864382

Alternate Identifier(s):

OSTI ID: 1863215; OSTI ID: 1865502

Report Number(s):

NREL/JA-5A00-82606
Journal ID: ISSN 0935-9648; 2110703

Grant/Contract Number:  

AC36-08GO28308

Resource Type:

Published Article

Journal Name:

Advanced Materials

Additional Journal Information:

Journal Name: Advanced Materials Journal Volume: 34 Journal Issue: 21; Journal ID: ISSN 0935-9648

Publisher:

Wiley Blackwell (John Wiley & Sons)

Country of Publication:

Germany

Language:

English

Subject:

36 MATERIALS SCIENCE; 2D-polymer; covalent organic framework; organic electrochemical transistor; thin film transistor