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Title: Universal spray-deposition process for scalable, high-performance, and stable organic electrochemical transistors
Authors: Wu, Xihu
Surendran, Abhijith
Moser, Maximilian
Chen, Shuai
Bening Tirta Muhammad
Maria, Iuliana Petruta
McCulloch, Iain
Leong, Wei Lin
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2020
Source: Wu, X., Surendran, A., Moser, M., Chen, S., Bening Tirta Muhammad., Maria, I. P., . . . Leong, W. L. (2020). Universal spray-deposition process for scalable, high-performance, and stable organic electrochemical transistors. ACS Applied Materials and Interfaces, 12(18), 20757–20764. doi:10.1021/acsami.0c04776
Journal: ACS Applied Materials and Interfaces
Abstract: Organic electrochemical transistors (OECTs) with high transconductance and good operating stability in an aqueous environment are receiving substantial attention as promising ion-to-electron transducers for bioelectronics. However, to date, in most of the reported OECTs, the fabrication procedures have been devoted to spin-coating processes that may nullify the advantages of large-area and scalable manufacturing. In addition, conventional microfabrication and photolithography techniques are complicated or incompatible with various nonplanar flexible and curved substrates. Herein, we demonstrate a facile patterning method via spray deposition to fabricate ionic-liquid-doped poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-based OECTs, with a high peak transconductance of 12.9 mS and high device stability over 4000 switching cycles. More importantly, this facile technique makes it possible to fabricate high-performance OECTs on versatile substrates with different textures and form factors such as thin permeable membranes, flexible plastic sheets, hydrophobic elastomers, and rough textiles. Overall, the results highlight the spray-deposition technique as a convenient route to prepare high-performing OECTs and will contribute to the translation of OECTs into real-world applications.
ISSN: 1944-8244
DOI: 10.1021/acsami.0c04776
DOI (Related Dataset):
Schools: School of Electrical and Electronic Engineering 
Interdisciplinary Graduate School (IGS) 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
IGS Journal Articles

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