Influence of paper surface characteristics on fully inkjet printed PEDOT:PSS-based electrochemical transistors

Paper electronics has emerged as an ecofriendly, light, low-cost, and recyclable material for the fabrication of flexible and printed transistors. In this study, we present fully printed organic electrochemical transistors using an active layer of PEDOT:PSS, carbon electrodes, cellulose-based electr...

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Bibliographic Details
Published in:Semiconductor science and technology 2021-12, Vol.36 (12), p.125005
Main Authors: Morais, Rogério, Vieira, Douglas Henrique, Gaspar, Cristina, Pereira, Luis, Martins, Rodrigo, Alves, E Neri
Format: Article
Language:English
Subjects:
electrochemical transistor
organic electronics
paper electronics
PEDOT:PSS
printed electronics
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Summary:Paper electronics has emerged as an ecofriendly, light, low-cost, and recyclable material for the fabrication of flexible and printed transistors. In this study, we present fully printed organic electrochemical transistors using an active layer of PEDOT:PSS, carbon electrodes, cellulose-based electrolyte, and three different papers as substrates: bond, vegetal, and Lumi Silk, relating the electrical properties to the different morphologies of the paper surfaces. Each paper presents different regularity, diffusion capabilities, and roughness, with significant influence on the transistor performance. The more organized and smooth the surface, the better the electrical characteristics, the best of these being the Lumi Silk, with higher I on / I off ratio of 46, on-current of 8.3 × 10 −5 A, V on of 1.3 V, and power gain of 43.5 dB associated with ultra-low hysteresis of 0.1 V, high transconductance of −57.3 μ S, and suitablity for flexible electronics and sensors applications.
ISSN:0268-1242
1361-6641
DOI:10.1088/1361-6641/ac2de0