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Updated: Aug 26, 2025

Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

Published on: January 31, 2025

Stable water-floating transistor with recyclability.

Ilhwan Yu¹, Vu Thi Quyen¹, Jaehyoung Ko^1,2

¹Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk 55324, Republic of Korea. yjoo0727@kist.re.kr.

Materials Horizons

|October 11, 2022

Summary

This summary is machine-generated.

Researchers developed a novel water-floating electronic system for sustainable electronics. This fully recyclable device enables efficient component reuse, addressing electronic waste concerns in the sensor industry.

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Area of Science:

Materials Science
Environmental Science
Electronics Engineering

Background:

Electronic waste poses significant environmental hazards and challenges sustainable development in the electronics and sensor industries.
Current recycling methods often fall short in recovering components for effective reuse, necessitating innovative solutions.

Purpose of the Study:

To develop a fully recyclable electronic module for systematic component recollection and reuse.
To demonstrate a stable, water-compatible semiconductor system for electronic applications on water surfaces.

Main Methods:

Fabrication of a water-floating semiconductor system with tunable morphology.
Construction of water-floating gated transistors (WFGT) and water floating sensors (WFS).
Evaluation of device performance, stability, and recyclability over multiple cycles.

Main Results:

The water-floating semiconductor system achieved an on-current of 4.2 × 10^-5 A and an on/off ratio of approximately 10³.
The device demonstrated high recyclability over 25 cycles, with efficiencies of 99 ± 0.9% within 1 cycle and 92 ± 0.7% within 30 cycles.
The system exhibited stability for over 10 days.

Conclusions:

The developed water-floating electronic system offers a fully recyclable, eco-friendly, and cost-effective solution for electronic waste.
This technology has the potential to expand the application scope of semiconductor technology into new frontiers.
The system facilitates systematic component reuse, contributing to the sustainable development of electronic and sensor industries.