Bending Sensors Using Ionic Liquid Crystal Based on Oragnic Electrochemical Transistor

POSTER

Abstract

In recent years researchers have been focusing on optimizing the semiconducting materials for organic electrochemical transistor. Organic electronics devices are promising devices in bioelectronics. The working mechanism of the OECTs depends on the injections of ions from the electrolyte into the organic semiconductor. Liquid electrolytes in OECTs are widespread, but there is a growing need for solid electrolytes since they can be easily integrated into wearable devices. Recently our group confirmed that ionic liquid crystal elastomers (iLCEs) can be used as solid electrolytes of flexible, substrate-free organic electrochemical transistors.[1] Here we extend our studies to various ionic liquids and demonstrate that iLCE-based OECTs can also be used as sensitive bending sensors that is capable to distinguish the direction of the bending as well.

*This research was supported by the National Science Foundation under Grant Nos. DMR-1904167 and ECCS 1750011

Publication: [1] C. P. Hemantha Rajapaksha, Pushpa Raj Paudel, P. M. Sineth G. Kodikara, Drona Dahal, Thiloka M. Dassanayake, Vikash Kaphle, Björn Lüssem, Antal Jákli, "Ionic Liquid Crystal Elastomers Based Flexible Organic Electrochemical Transistors: Effect of director alignment of the solid electrolyte", Appl. Phys. Rev. 9, 011415 (2022)

Presenters

  • Arwa Alyami

    • Department of Physics, Advanced Materials and Liquid Crystal Institute, Kent State Unversity

Authors

  • Arwa Alyami

    • Department of Physics, Advanced Materials and Liquid Crystal Institute, Kent State Unversity

  • Antal Jakli

    • Kent State University
    • Materials Science Graduate Program, Kent State University, Kent OH, 44242, USA Department of Physics, Kent State University, Kent OH, 44242, USA
    • Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent OH, 44242, USA, Department of Physics, Kent State University
    • Department of Physics, Advanced Materials and Liquid Crystal Institute, Kent State University
    • Kent State Univerity

  • Björn Lüssem

    • Institute for Microsensors, Microactuators, and Microsystems (IMSAS), University of Bremen

  • Chathuranga Prageeth H Rajapaksha

    • Department of Physics, Advanced Materials and Liquid Crystal Institute, Kent State University

  • Pushpa R Paudel

    • Department of Physics, Kent State University