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

Rogério Morais, Douglas Henrique Vieira, Cristina Gaspar, Luis Pereira, Rodrigo Martins, E. Neri Alves

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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 μS, and suitablity for flexible electronics and sensors applications.

Original languageEnglish
Article number125005
JournalSemiconductor Science And Technology
Volume36
Issue number12
DOIs
Publication statusPublished - Dec 2021

Keywords

  • electrochemical transistor
  • organic electronics
  • paper electronics
  • PEDOT:PSS
  • printed electronics

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