Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors
Organic electrochemical transistors (OECTs) are highly attractive for applications ranging from circuit elements and neuromorphic devices to transducers for biological sensing, and the archetypal channel material is poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS. The operation of...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/138935 |
| _version_ | 1826129100919537664 |
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| author | Wu, Xihu Surendran, Abhijith Ko, Jieun Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Leong, Wei Lin |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Wu, Xihu Surendran, Abhijith Ko, Jieun Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Leong, Wei Lin |
| author_sort | Wu, Xihu |
| collection | NTU |
| description | Organic electrochemical transistors (OECTs) are highly attractive for applications ranging from circuit elements and neuromorphic devices to transducers for biological sensing, and the archetypal channel material is poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS. The operation of OECTs involves the doping and dedoping of a conjugated polymer due to ion intercalation under the application of a gate voltage. However, the challenge is the trade-off in morphology for mixed conduction since good electronic charge transport requires a high degree of ordering among PEDOT chains, while efficient ion uptake and volumetric doping necessitates open and loose packing of the polymer chains. Ionic-liquid-doped PEDOT:PSS that overcomes this limitation is demonstrated. Ionic-liquid-doped OECTs show high transconductance, fast transient response, and high device stability over 3600 switching cycles. The OECTs are further capable of having good ion sensitivity and robust toward physical deformation. These findings pave the way for higher performance bioelectronics and flexible/wearable electronics. |
| first_indexed | 2024-10-01T07:35:11Z |
| format | Journal Article |
| id | ntu-10356/138935 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:35:11Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1389352021-01-18T04:50:14Z Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors Wu, Xihu Surendran, Abhijith Ko, Jieun Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Leong, Wei Lin School of Chemical and Biomedical Engineering School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Conducting Polymers Doping Organic electrochemical transistors (OECTs) are highly attractive for applications ranging from circuit elements and neuromorphic devices to transducers for biological sensing, and the archetypal channel material is poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS. The operation of OECTs involves the doping and dedoping of a conjugated polymer due to ion intercalation under the application of a gate voltage. However, the challenge is the trade-off in morphology for mixed conduction since good electronic charge transport requires a high degree of ordering among PEDOT chains, while efficient ion uptake and volumetric doping necessitates open and loose packing of the polymer chains. Ionic-liquid-doped PEDOT:PSS that overcomes this limitation is demonstrated. Ionic-liquid-doped OECTs show high transconductance, fast transient response, and high device stability over 3600 switching cycles. The OECTs are further capable of having good ion sensitivity and robust toward physical deformation. These findings pave the way for higher performance bioelectronics and flexible/wearable electronics. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2020-05-14T04:07:59Z 2020-05-14T04:07:59Z 2019 Journal Article Wu, X., Surendran, A., Ko, J., Filonik, O., Herzig, E. M., Müller-Buschbaum, P., & Leong, W. L. (2019). Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors. Advanced Materials, 31(2), 1805544-. doi:10.1002/adma.201805544 0935-9648 https://hdl.handle.net/10356/138935 10.1002/adma.201805544 30417445 2-s2.0-85056258298 2 31 1805544 (1 of 9) 1805544 (9 of 9) en Advanced Materials https://doi.org/10.21979/N9/KFBGNX This is the accepted version of the following article: Wu, X., Surendran, A., Ko, J., Filonik, O., Herzig, E. M., Müller-Buschbaum, P., & Leong, W. L. (2019). Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors. Advanced Materials, 31(2), 1805544-, which has been published in final form at doi:10.1002/adma.201805544. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Conducting Polymers Doping Wu, Xihu Surendran, Abhijith Ko, Jieun Filonik, Oliver Herzig, Eva M. Müller-Buschbaum, Peter Leong, Wei Lin Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title | Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title_full | Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title_fullStr | Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title_full_unstemmed | Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title_short | Ionic-liquid doping enables high transconductance, fast response time, and high ion sensitivity in organic electrochemical transistors |
| title_sort | ionic liquid doping enables high transconductance fast response time and high ion sensitivity in organic electrochemical transistors |
| topic | Engineering::Electrical and electronic engineering Conducting Polymers Doping |
| url | https://hdl.handle.net/10356/138935 |
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