Work

Performance of Organic Electrochemical Transistors with Ionic Liquid Crystal Elastomers as Solid Electrolytes

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Organic electrochemical transistors (OECTs) have emerged as attractive devices for bioelectronics, wearable electronics, soft robotics, and energy storage devices. The electrolyte, being a fundamental component of OECTs, plays a crucial role in their performance. Recently, it has been demonstrated that ionic liquid crystal elastomers (iLCEs) can be used as a solid electrolyte for OECTs. Their capabilities, however, have only been shown for relatively large size substrate-free OECTs. Here, we study the influence of the different alignments of iLCEs on steady state and transient behavior of OECTs using a lateral geometry with source, drain, and gate in the same plane. We achieve excellent electrical response with an ON/OFF switching ratio of >10 5 and minimal leakage current. The normalized maximum transconductance g m /w of the most sensitive iLCE was found to be 33 S m –1, which is one of the highest among all solid-state-based OECTs reported so far. Additionally, iLCEs show high stability and can be removed and reattached multiple times to the same OECT device without decreasing performance.

Source: ACS Applied Materials & Interfaces

DOI: 10.1021/acsami.4c06608

Authors: Arwa Alyami, Michael Skowrons, Kelum Perera, Björn Lüssem, Antal Jákli

Institutions: Kent State University, University of Bremen

Language: English

Topic: Conducting polymers and applications

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: Deutsche Forschungsgemeinschaft, Najran University