Sun, Bo and Hatta, Sharifah F. Wan Muhamad and Soin, Norhayati and Kadir, Mohd Fakhrul Zamani Abdul and Rezali, Fazliyatul Azwa Md and Aidit, Siti Nabila and Ma, Li Ya and Ma, Quanjin (2024) Development of Screen-Printed Biodegradable Flexible Organic Electrochemical Transistors Enabled by Poly(3,4-ethylenedioxythiophene) Polystyrene Sulfonate and a Solid-State Chitosan Polymer Electrolyte. ACS Applied Electronic Materials, 6 (4). pp. 2336-2348. ISSN 2637-6113, DOI https://doi.org/10.1021/acsaelm.3c01823.
Full text not available from this repository.Abstract
Organic electrochemical transistors (OECTs) are gaining interest for applications in neuromorphic devices and biosensors. Traditional OECTs use aqueous or ionic gel electrolytes, but these materials often limit performance and wider application due to their fluid nature and poor biocompatibility. This study introduces a biodegradable, flexible solid-state OECT using a chitosan biopolymer electrolyte. The electrolyte consists of chitosan, dextran, and lithium perchlorate (LiClO4)-based salt. The chitosan-based OECTs feature an organic poly(3,4-ethylenedioxythiophene) polystyrene sulfonate semiconductor channel and are fabricated using screen printing. They demonstrate impressive performance, including an on-state current of 0.19 +/- 0.03 mA at a low 0.6 V bias voltage, a high on/off current ratio of 0.3 x 10(3), and a large transconductance of 0.416 +/- 0.05 mS. Additionally, these OECTs show remarkable endurance and mechanical robustness, maintaining stability after 300 bending cycles, long-term bending, and under temperatures ranging from 30 to 75 degrees C. Significantly, the chitosan-based OECTs are biodegradable, breaking down without toxic byproducts and reducing environmental impact. This makes them a promising option for future bioelectronics and wearable technology that leverage natural biomaterials.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia (FRGS/1/2019/TK10/UM/02/4), Malaysian Ministry of Higher Education, FRGS Grant (ST007-2023), SATU Joint Research Scheme Program, Centre of Printable Electronics, Research Management & Innovation Complex, Universiti Malaya Centre for Ionic Liquid (UMCIL), Universiti Malaya |
| Uncontrolled Keywords: | organic electrochemical transistors; flexible; screen-printed; biodegradable; PEDOT:PSS; polymer electrolyte |
| Subjects: | Q Science > Q Science (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Centre for Foundation Studies in Science > Physics Division Faculty of Engineering > Department of Electrical Engineering Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 Oct 2024 02:42 |
| Last Modified: | 21 Oct 2024 02:42 |
| URI: | http://eprints.um.edu.my/id/eprint/45406 |
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