Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT
Abstract Organic electrochemical transistors (OECTs) based on poly(3,4-ethylenedioxythiophene) (PEDOT) have been extensively studied, yet devices fabricated via electropolymerization remain underexplored in terms of the underlying ionic dynamics and the potential for flexible integration. In this wo...
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Nature Portfolio
2025-07-01
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| Series: | npj Flexible Electronics |
| Online Access: | https://doi.org/10.1038/s41528-025-00457-w |
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| author | Meijing Wang Jiaxin Fan Michel Bilodeau-Calame Chihyeong Kim Cheng-Ling Chiang Ademar Fabricio Chaverri Segura Vito Vurro Ilaria Bargigia Janine Mauzeroll Fabio Cicoira |
| author_facet | Meijing Wang Jiaxin Fan Michel Bilodeau-Calame Chihyeong Kim Cheng-Ling Chiang Ademar Fabricio Chaverri Segura Vito Vurro Ilaria Bargigia Janine Mauzeroll Fabio Cicoira |
| author_sort | Meijing Wang |
| collection | DOAJ |
| description | Abstract Organic electrochemical transistors (OECTs) based on poly(3,4-ethylenedioxythiophene) (PEDOT) have been extensively studied, yet devices fabricated via electropolymerization remain underexplored in terms of the underlying ionic dynamics and the potential for flexible integration. In this work, we demonstrate robust OECTs based on electropolymerized PEDOT, exhibiting negligible drain current degradation after 1000 cycles of operation in aqueous NaCl. Compared to inkjet-printed devices, they offer markedly superior cycling stability, which is further enhanced by the incorporation of the small anionic dopant ClO4 −. We also show flexible, lightweight OECTs by electropolymerizing PEDOT on ultrathin parylene substrates, achieving stable performance under mechanical strain. Furthermore, Electrochemical Quartz Crystal Microbalance with Dissipation (EQCM-D) analysis reveals distinct ion transport behavior in PEDOT:ClO4, where dopant ejection dominates doping/dedoping process, unlike in PEDOT:PSS. This study underscores the advantages of electropolymerization and small-ion doping, offering new mechanistic insights and advancing the design of high-performance, flexible OECTs for bioelectronic applications. |
| format | Article |
| id | doaj-art-4ded4e2a2a61433d9dc9a4e29f13f225 |
| institution | Kabale University |
| issn | 2397-4621 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Flexible Electronics |
| spelling | doaj-art-4ded4e2a2a61433d9dc9a4e29f13f2252025-08-20T04:02:41ZengNature Portfolionpj Flexible Electronics2397-46212025-07-019111110.1038/s41528-025-00457-wRobust and flexible organic electrochemical transistors enabled by electropolymerized PEDOTMeijing Wang0Jiaxin Fan1Michel Bilodeau-Calame2Chihyeong Kim3Cheng-Ling Chiang4Ademar Fabricio Chaverri Segura5Vito Vurro6Ilaria Bargigia7Janine Mauzeroll8Fabio Cicoira9Department of Chemical Engineering, Polytechnique MontréalDepartment of Chemical Engineering, Polytechnique MontréalDepartment of Chemical Engineering, Polytechnique MontréalDepartment of Chemical Engineering, Polytechnique MontréalDepartment of Chemical Engineering, Polytechnique MontréalDepartment of Chemical Engineering, Polytechnique MontréalCenter for Nanoscience and Technology, Italian Institute of TechnologyCenter for Nanoscience and Technology, Italian Institute of TechnologyDepartment of Chemistry, McGill UniversityDepartment of Chemical Engineering, Polytechnique MontréalAbstract Organic electrochemical transistors (OECTs) based on poly(3,4-ethylenedioxythiophene) (PEDOT) have been extensively studied, yet devices fabricated via electropolymerization remain underexplored in terms of the underlying ionic dynamics and the potential for flexible integration. In this work, we demonstrate robust OECTs based on electropolymerized PEDOT, exhibiting negligible drain current degradation after 1000 cycles of operation in aqueous NaCl. Compared to inkjet-printed devices, they offer markedly superior cycling stability, which is further enhanced by the incorporation of the small anionic dopant ClO4 −. We also show flexible, lightweight OECTs by electropolymerizing PEDOT on ultrathin parylene substrates, achieving stable performance under mechanical strain. Furthermore, Electrochemical Quartz Crystal Microbalance with Dissipation (EQCM-D) analysis reveals distinct ion transport behavior in PEDOT:ClO4, where dopant ejection dominates doping/dedoping process, unlike in PEDOT:PSS. This study underscores the advantages of electropolymerization and small-ion doping, offering new mechanistic insights and advancing the design of high-performance, flexible OECTs for bioelectronic applications.https://doi.org/10.1038/s41528-025-00457-w |
| spellingShingle | Meijing Wang Jiaxin Fan Michel Bilodeau-Calame Chihyeong Kim Cheng-Ling Chiang Ademar Fabricio Chaverri Segura Vito Vurro Ilaria Bargigia Janine Mauzeroll Fabio Cicoira Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT npj Flexible Electronics |
| title | Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT |
| title_full | Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT |
| title_fullStr | Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT |
| title_full_unstemmed | Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT |
| title_short | Robust and flexible organic electrochemical transistors enabled by electropolymerized PEDOT |
| title_sort | robust and flexible organic electrochemical transistors enabled by electropolymerized pedot |
| url | https://doi.org/10.1038/s41528-025-00457-w |
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